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Publications

for a full list: Google Scholar

2024

A. Gao, S.-W. Chen, B. Ghosh, J.-X. Qiu, Y.-F. Liu, Y. Onishi, C. Hu, T. Qian, D. Bérubé, T. Dinh, H. Li, C. Tzschaschel, S. Park, T. Huang, S.-W. Lien, Z. Sun, S.-C. Ho, B. Singh, K. Watanabe, T. Taniguchi, D. C. Bell, A. Bansil, H. Lin, T.-R. Chang, A. Yacoby, N. Ni, L. Fu, Q. Ma, and S.-Y. Xu, “An Antiferromagnetic Diode Effect in Even-layered MnBi2Te4“, Nature Electronics (2024).(Link)

C. Tzschaschel, J.-X. Qiu, X.-J. Gao, H.-C. Li, C. Guo, H.-Y. Yang, C.-P. Zhang, Y.-M. Xie, Y.-F. Liu, A. Gao, D. Bérubé, T. Dinh, S.-C. Ho, Y. Fang, F. Huang, J. Nordlander, Q. Ma, F. Tafti, P. J. W. Moll, K. T. Law, and S.-Y. Xu, “Nonlinear Optical Diode Effect in a Magnetic Weyl Semimetal“, Nature Communications (2024). (Link)

J. Tang, T. S. Ding, H. Chen, A. Gao, T. Qian, Z. Huang, Z. Sun, X. Han, A. Strasser, J. Li, M. Geiwitz, M. Shehabeldin, V. Belosevich, Z. Wang, Y. Wang, K. Watanabe, T. Taniguchi, D. C. Bell, Z. Wang, L. Fu, Y. Zhang, X. Qian, K. S. Burch, Y. Shi, N. Ni, G. Chang, S.-Y. Xu, and Q. Ma, “Dual Quantum Spin Hall Insulator by Density-tuned Correlations in TaIrTe4“, Nature (2024). (Link)

H. Chen, Y. Jin, M. Yahyavi, I. Belopolski, S. Shao, T. Hou, N. Wang, C.-H. Hsu, Y. Zhao, B. Yang, Q. Ma, J.-X. Yin, S.-Y. Xu, W.-B. Gao, and G. Chang, “Unveiling the Chirality of the Quantum Anomalous Hall Effect“, Physical Review B (2024). (Link)

S. Ghimire, K. R. Joshi, M. Kończykowski, R. Grasset, A. Datta, M. A. Tanatar, D. Bérubé, S.-Y. Xu, Y. Fang, F. Huang, P. P. Orth, M. S. Scheurer, and R. Prozorov, “Anisotropic Multiband Superconductivity in 2M−WS2“, Physical Review Research  (2024). (Link)

2023

X. Yan, Z. Zheng, V. K. Sangwan, J. H. Qian, X. Wang, S. E. Liu, K. Watanabe, T. Taniguchi, S.-Y. Xu, P. Jarillo-Herrero, Q. Ma, and M. C. Hersam, “Moiré Synaptic Transistor with Room-temperature Neuromorphic Functionality“, Nature (2023). (Link)

A. P. Sakhya, C.-Y. Huang, G. Dhakal, X.-J. Gao, S. Regmi, B. Wang, W. Wen, R.-H. He, X. Yao, R. Smith, M. Sprague, S. Gao, B. Singh, H. Lin, S.-Y. Xu, F. Tafti, A. Bansil, and M. Neupane, “Observation of Fermi Arcs and Weyl Nodes in a Noncentrosymmetric Magnetic Weyl Semimetal“, Physical Review Materials, (2023). (Link)

J.-X. Qiu, C. Tzschaschel, J. Ahn, A. Gao, H. Li, X.-Y. Zhang, B. Ghosh, C. Hu, Y.-X. Wang, Y.-F. Liu, D. Bérubé, T. Dinh, Z. Gong, S.-W. Lien, S.-C. Ho, B. Singh, K. Watanabe, T. Taniguchi, D. C. Bell, H.-Z. Lu, A. Bansil, H. Lin, T.-R. Chang, B. B. Zhou, Q. Ma, A. Vishwanath, N. Ni & S.-Y. Xu, “Axion optical induction of antiferromagnetic order” Nature Material (2023) (Link)

A. Gao, Y.-F. Liu, J.-X. Qiu, B. Ghosh, T. V. Trevisan, Y. Onishi, C. Hu, T, Qian, H.-J. Tien,S.-W. Chen, M. Huang, D. Bérubé, H. Li, C. Tzschaschel, T. Dinh, Z. Sun, S.-C. Ho, S.-W. Lien, B. Singh, K. Watanabe, T. Taniguchi, D. C. Bell, H. Lin, T. -R. Chang, C. R. Du, A. Bansil, L. Fu, N. Ni, P. P. Orth, Q. Ma, S.-Y. Xu “Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure”, Science (2023) (Link)

2021

A. Gao, Y.-F. Liu, C. Hu, J. -X. Qiu, C. Tzschaschel, B. Ghosh, S. -C. Ho, D. Bérubé, R. Chen, H. Sun, Z. Zhang, X. -Y. Zhang, Y. -X.  Wang, N. Wang, Z. Huang, C. Felser, A. Agarwal, T. Dinh, H. -J. Tien, A. Akey, J. Gardener, B. Singh, K. Watanabe, T. Taniguchi, K. S. Burch, D. C. Bell, B. B. Zhou, W. Gao, H. -Z. Lu, A. Bansil, H. Lin, T. -R. Chang, L. Fu, Q Ma, N. Ni & S. -Y. Xu,  “Layer Hall effect in a 2D topological axion antiferromagnet”, Nature 595, 521–525 (2021) (Link)

2020

S.-Y. Xu*,Q. Ma*, Y. Gao, A. Kogar, G. Zong, A. Valdivia, T. Dinh, S. Huang, B. Singh, C.-H. Hsu, T.-R. Chang, J. Ruff, K. Watanabe, T. Taniguchi, H. Lin, G. Karapetrov, D. Xiao, P. Jarillo-Herrero & N. Gedik, “Spontaneous gyrotropic electronic order in a transition-metal dichalcogenide”, Nature 578, 545-549 (2020) (Link) (MIT news) (Cover story)

H. Isobe, S.-Y. Xu & L. Fu, “High-frequency rectification via chiral Bloch electrons”, Science Adv. 6, eaay2497(2020)(Link)

G. Chang, J. Yin, T. Neupert, D. Sanchez, I. Belopolski, S. Zhang, T. Cochran, M.-C. Hsu, S.-M. Huang, B. Lian, S.-Y. Xu, H. Lin & M. Z. Hasan, “Topological photocurrent responses from chiral surface Fermi arcs”, Phys. Rev. Lett. 124, 166404 (2020) (Link)

Z. Zheng*, Q. Ma*,  Z. Bi, SC de la Barrera, M. -H Liu, N. Mao, Y. Zhang, N. Kiper, K. Watanabe, T. Taniguchi, J. Kong, W. A. Tisdale, R. Ashoori, N. Gedik, L. Fu, S. -Y. Xu & P. Jarillo-Herrero,  “Unconventional ferroelectricity in moiré heterostructures.” Nature (2020) (Link)

2019

I. Belopolski, D. Sanchez, G. Chang, K. Manna, B. Ernst, S.-Y. Xu, S. Zhang, H. Zheng, J. Yin, B. Singh, G. Bian, D. Multer, X. Zhou, S.-M. Huang, B. Wang, A. Bansil, H. Lin, C. Felser, M. Zahid Hasan, “A three-dimensional magnetic topological phase”, to appear in Science (Link)

D. Sanchez, I. Belopolski, T. Cochran, X. Xu, J. Yin, G. Chang, W. Xie, K. Manna, V. Süß, C. Huang, N. Alidoust, D. Multer, S. Zhang, N. Shumiya, X. Wang, G. Wang, T.-R. Chang, C. Felser, S.-Y. Xu, S. Jia, H. Lin & M. Z. Hasan†, “Topological chiral crystals with helicoid-arc quantum states“, Nature 567, 500–505 (2019) (Link)

J. Hu†, S.-Y. Xu, N. Ni & Z. Mao†, “Transport of topological semimetals”, Annual Review of Materials Research 49, 207-252 (2019) (Link)

C.-S. Kuo, T.-R. Chang†, S.-Y. Xu & H.-T. Jeng†, “Unconventional topological phase transition in non-symmorphic material KHgX (X = As, Sb, Bi)“, npj Computational Materials 5, 65 (2019) (Link)

C.-H. Hsu, X. Zhou, T.-R. Chang, Q. Ma, N. Gedik, A. Bansil, S.-Y. Xu†, H. Lin†, & L. Fu†, “Topology on a new facet of bismuth”, PNAS 116, 13255-13259 (2019) (Link) MIT news

Q. Ma, C. Lui, J. Song, Y. Lin, J-F. Kong, Y. Cao, T. Dinh, N. Nair, W. Fang, K. Watanabe, T. Taniguchi, S.-Y. Xu, J. Kong, T. Palacios, N. Gedik, N. Gabor & P. Jarillo-Herrero, “Giant intrinsic photoresponse in pristine graphene”, Nature Nano. 14, 145–150 (2019) (Link) Nature Nanotechnology News & Views UCR news PhysicsWorld

Q. Ma*, S.-Y. Xu*, H. Shen*, D. MacNeill, V. Fatemi, T. Chang, A. Valdivia, S. Wu, Z. Du, C. Hsu, S. Fang, Q. Gibson, K. Watanabe, T. Taniguchi, R. Cava, E. Kaxiras, H. Lu, H. Lin, L. Fu, N. Gedik & P. Jarillo-Herrero, “Observation of the nonlinear Hall effect under time reversal symmetric conditions”, Nature 565, 337 (2019) (Link)

Before 2019

I. Optical studies

  1. S.-Y. Xu*, Q. Ma*, et al., “Electrically switchable Berry curvature dipole in the monolayer topological insulator WTe2”, Nature Phys. 14, 900 (2018)
  2. Q. Ma*, S.-Y. Xu*, et al., “Direct optical detection of Weyl fermion chirality in a topological semimetal”, Nature Phys. 13, 842 (2017)
  3. A. Reijnders, Y. Tian, L. Sandilands, G. Pohl, I. Kivlichan, S. Zhao, S. Jia, M. Charles, R. Cava, N. Alidoust, S.-Y. Xu, et al., “Optical evidence of surface state suppression in Bi based topological insulators”, Phys. Rev. B 89, 075138 (2014)

II. Angle-resolved photoemission studies

  1. I. Belopolski, P. Yu, D. Sanchez, Y. Ishida, T. Chang, S. Zhang, S.-Y. Xu, et al., “Signatures of a time-reversal symmetric Weyl semimetal with only four Weyl points”, Nature Comm. 8, 942 (2017)
  2. S.-Y. Xu, et al., “Discovery of Lorentz-violating type II Weyl fermions in LaAlGe”, Science Adv. 3, e1603266 (2017)
  3. I. Belopolski, S.-Y. Xu, et al., “A novel artificial condensed matter lattice and a new platform for one-dimensional topological phases”, Science Adv. 3, e1501692 (2017)
  4. I. Belopolski, D. Sanchez, Y. Ishida, X. Pan, P. Yu, S.-Y. Xu, et al., “Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2”, Nature Comm. 7, 13643 (2016)
  5. I. Belopolski, S.-Y. Xu, et al., “Fermi arc electronic structure and Chern numbers in the type II Weyl semimetal candidate MoxW1-xTe2”, Phys. Rev. B 94, 085127 (2016)
  6. N. Alidoust, C. Liu, S.-Y. Xu, et al., “Observation of metallic surface states in the strongly correlated Kitaev-Heisenberg candidate Na2IrO3”, Phys. Rev. B 93, 245132 (2016)
  7. M. Neupane, I. Belopolski, M. Hosen, D. Sanchez, R. Sankar, M. Szlawska, S.-Y. Xu, et al., “Observation of Topological Nodal Fermion Semimetal Phase in ZrSiS”, Phys. Rev. B 93, 201104(R) (2016)
  8. G. Bian, T. Chung, C. Liu, C. Chen, T. Chang, T. Wu, I. Belopolski, H. Zheng, S.-Y. Xu, et al., “Experimental observation of two massless Dirac-fermion gases in graphene-topological insulator heterostructure”, 2D Materials 3, 2 (2015)
  9. I. Beloposki, S.-Y. Xu, et al., “Fermi arc electronic structure and Chern numbers in the type-II Weyl semimetal candidate MoxW1-xTe2”, Phys. Rev. B 94, 085127 (2016)
  10. M. Neupane, N. Alidoust, S.-Y. Xu, et al., “Observation of the spin polarized surface state in a noncentrosymmetric superconductor BiPd”, Nature Comm. 7, 13315 (2016)
  11. I. Belopolski, S.-Y. Xu, et al., “Criteria for directly detecting topological Fermi arcs in Weyl semimetals”, Phys. Rev. Lett. 116, 066802 (2016)
  12. G. Bian, Z. Wang, X. Wang, C. Xu, S.-Y. Xu, et al., “Engineering electronic structure of a 2D topological insulator Bi(111) bilayer on Sb nanofilms by quantum confinement effect”, ACS Nano 10, 3859 (2016)
  13. S.-Y. Xu, et al., “Spin polarization and texture of the Fermi arcs in the Weyl fermion semimetal TaAs”, Phys. Rev. Lett. 116, 096801 (2016)
  14. G. Bian, T. Chang, H. Zheng, S. Velury, S.-Y. Xu, et al., ‘Drumhead surface states and topological nodal-line fermions in TlTaSe2”, Phys. Rev. B 93, 121113(R) (2016)
  15. M. Neupane, Y. Ishida, R. Sankar, J. Zhu, D. Sanchez, I. Belopolski, S.-Y. Xu, et al., “Electronic structure and relaxation dynamics in a superconducting topological material”, Sci. Rep. 6, 22557 (2016)
  16. I. Belopolski*, S.-Y. Xu*, et al., “Unoccupied electronic structure and signatures of topological Fermi arcs in the Weyl semimetal candidate MoxW1-xTe2”, Phys. Rev. B 94, 085127 (2015)
  17. C. Liu, G. Bian, T. Chang, K. Wang, S.-Y. Xu, et al., “Tunable spin helical Dirac quasiparticles on the surface of three-dimensional HgTe”, Phys. Rev. B 92, 115436 (2015)
  18. M. Neupane*, S.-Y. Xu*, et al., “Gigantic surface life-time of an intrinsic topological insulator revealed via time-resolved (pump-probe) ARPES”, Phys. Rev. Lett. 115, 116801(2015)
  19. C. Lee, S.-Y. Xu, et al., “Fermi surface interconnectivity and topology in Weyl fermion semimetals TaAs, TaP, NbAs, and NbP”, Phys. Rev. B 92, 235104 (2015)
  20. S.-Y. Xu, et al., “Experimental discovery of Weyl semimetal TaP”, Science Adv. 1, e1501092 (2015)
  21. G. Bian, T. Chang, R. Sankar, S.-Y. Xu, et al., “Topological nodal-line fermions in spin-orbit metal PbTaSe2”, Nature Comm.7, 10556 (2015)
  22. S.-Y. Xu, et al., “Discovery of Weyl semimetal NbAs”, Nature Phys.11, 748-754 (2015)
  23. S.-Y. Xu, et al., “Discovery of a Weyl fermion semimetal and topological Fermi arcs”, Science349, 613-61 (2015)
  24. S.-Y. Xu, et al., “Unconventional transformation of spin-Dirac phase across a topological quantum phase transition”, Nature Comm. 6, 6870 (2015)
  25. S.-Y. Xu, et al., “Lifshitz transition and van Hove singularity in a three-dimensional topological Dirac semimetal”, Phys. Rev. B 92, 075115 (2015)
  26. M. Neupane, N. Alidoust, G. Bian, S.-Y. Xu, et al., “Fermi surface topology and hotspots distribution in Kondo lattice system CeB6”, Phys. Rev. B 92, 104420 (2015)
  27. M. Neupane*, S.-Y. Xu*, et al., “Observation of non-Kondo-like electronic structure in strongly correlated electron system YbB6”, Phys. Rev. Lett. 114, 016403 (2015)
  28. M. Neupane*, S.-Y. Xu*, et al., “Saddle point singularity and topological phase diagram in a tunable topological crystalline insulator (TCI)”, Phys. Rev. B 92, 075131 (2015)
  29. S.-Y. Xu, et al., “Observation of Fermi arc surface states in a topological metal”, Science 347, 294(2015)
  30. S.-Y. Xu, et al., “Momentum space imaging of Cooper pairing in a half Dirac gas topological superconductor”, Nature Phys. 10, 943-950 (2014)
  31. M. Neupane, A. Richardella, J. Sánchez-Barriga, S.-Y. Xu, et al., “Observation of quantum-tunneling modulated spin texture in ultrathin topological insulator Bi2Se3 films”, Nature Comm. 5, 3841 (2014)
  32. C. Liu*, S.-Y. Xu*, et al., “Spin correlated electronic state on the surface of a spin-orbit Mott system (Layered Iridates)”, Phys. Rev. B 90, 045127 (2014)
  33. S.-Y. Xu, et al., “Fermi-level electronic structure of a topological-insulator/cuprate-superconductor based heterostructure in the superconducting proximity effect regime”, Phys. Rev. B 90 085128 (2014)
  34. M. Neupane*, S.-Y. Xu*, et al., “Observation of a topological 3D Dirac semimetal phase in high-mobility Cd3As2”, Nature Comm. 5, 4786 (2014)
  35. N. Alidoust, G. Bian, S.-Y. Xu, et al., “Observation of monolayer valence band spin-orbit effect and induced quantum well states (QWS) in MoX2”, Nature Comm. 5, 4673 (2014)
  36. M. Neupane, S. Basak, N. Alidoust, S.-Y. Xu, et al., “Oscillatory surface dichroism of an insulating topological insulator Bi2Te2Se”, Phys. Rev. B 88, 165129 (2013)
  37. M. Neupane, N. Alidoust, S.-Y. Xu, et al., “Surface electronic structure of a topological Kondo insulator candidate SmB6: insights from high-resolution ARPES”, Nature Comm. 4, 2991 (2013)
  38. S.-Y. Xu, et al., “Observation of a topological crystalline insulator phase and topological phase transition in Pb1-xSnxTe”, Nature Comm. 3, 1192 (2012)
  39. S.-Y. Xu, et al., “Hedgehog spin texture and Berry’s phase tuning in a magnetic topological insulator”, Nature Phys. 8, 616-622 (2012)
  40. M. Brahlek, N. Bansal, N. Koirala, S.-Y. Xu, et al., “Topological-metal to band-insulator transition in (Bi1-xInx)2Se3 thin films”, Phys. Rev. Lett. 109, 186403 (2012)
  41. M. Neupane, S.-Y. Xu, et al., “Topological surface states and Dirac point tuning in ternary topological insulators”, Phys. Rev. B 85, 235406 (2012)
  42. D. Zhang, A. Richardella, D. Rench, S.-Y. Xu, et al., “Interplay between ferromagnetism, surface states, and quantum corrections in a magnetically doped topological insulator”, Phys. Rev. B 86, 205127 (2012)
  43. M. Neupane, C. Liu, S.-Y. Xu, et al., “Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca10(Pt3As8)(Fe2As2)5”, Phys. Rev. B 85, 094510 (2012)
  44. H. Ji, J. M. Allred, N. Ni, J. Tao, M. Neupane, L. Wray, S.-Y. Xu, et al., “Bulk intergrowth of a topological insulator with a room-temperature ferromagnet”, Phys. Rev. B 85, 165313 (2012)
  45. S.-Y. Xu, et al., “Topological phase transition and texture inversion in a tunable topological insulator”, Science 332, 560-564 (2011)
  46. L. Wray, S.-Y. Xu, et al., “A topological insulator surface under strong Coulomb, magnetic and disorder perturbations”, Nature Phys. 7, 32-37 (2011)
  47. L. Wray, S.-Y. Xu, et al., “Spin-orbital ground states of superconducting doped topological insulators: A Majorana platform”, Phys. Rev. B 83, 224516 (2011)
  48. L. Wray, S.-Y. Xu, et al., “Observation of topological order in a superconducting doped topological insulator”, Nature Phys. 6, 855-859 (2010)

III. Theoretical works (material search, property prediction)

  1. S. Huang, S.-Y. Xu,et al., “Aspects of symmetry and topology in the charge density wave phase of 1T-TiSe2”, arXiv: 1807.11107 (2018) under review
  2. X. Zhou, C. Hsu, T. Chang, H. Tien, Q. Ma, P. Jarillo-Herrero, N. Gedik, A. Bansil, V. Pereira, S.-Y. Xu†, H. Lin & L. Fu, “Topological crystalline insulator states in the CaAs family”, arXiv: 1805.05215 (2018) under review
  3. J. You, S. Fang, S.-Y. Xu, et al., “The Berry curvature dipole current in transition metal dichalcogenides family”, Phys. Rev. B(R) 98, 121109 arXiv: 1805.02157 (2018)
  4. G. Chang, B. J. Wieder, Frank Schindler, D. Sanchez, I. Belopolski, S. Huang, B. Singh, D. Wu, T. Chang, T. Neupert, S.-Y. Xu†, H. Lin† & M. Z. Hasan†, “Universal topological properties of chiral crystals”, Nature Materials 17, 978 (2018)
  5. S. Huang, C. Hus, S.-Y. Xu, et al., “Topological superconductor in quasi one-dimensional Tl2-xMo6Se6”, Phys. Rev. B 97, 014510 (2018)
  6. G. Chang, B. Singh, S.-Y. Xu, et al., “Magnetic and noncentrosymmetric Weyl fermion semimetals in the RAlGe family of compounds (R = rare earth)”, Phys. Rev. B 97, 041104 (2018)
  7. G. Chang*, S.-Y. Xu*†,et al., “Large Fermi arcs in Unconventional Weyl Semimetal RhSi”, Phys. Rev. Lett.119, 206401 (2017)
  8. G. Chang*, S.-Y. Xu*†, et al., “Topological Hopf and chain link semimetal states and their application to Co2MnGa”, Phys. Rev. Lett.119, 156401 (2017)
  9. T. Chang, S.-Y. Xu*†, et al., “Type-II symmetry-protected topological Dirac semimetals”, Phys. Rev. Lett. 119, 026404 (2017)
  10. G. Chang*, S.-Y. Xu†, et al., “Nexus fermions in topological symmorphic crystalline metals”, Sci. Rep. 7, 1688 (2017)
  11. G. Chang, S.-Y. Xu*, et al., “Room-temperature magnetic topological semimetal state in half-metallic Heusler Co2TiX (X=Si, Ge, or Sn)”, Sci. Rep. 6, 38839 (2016)
  12. C. Chiu, G. Bian, H. Zheng, J. Yin, S. Zhang, S.-Y. Xu, et al., “Chiral Majorana fermion modes on the surface of superconducting topological insulators”, arXiv: 1612.09276 (2016)
  13. T. Chang, P. Chen, G. Bian, T. Neupert, R. Sankar, S.-Y. Xu, et al., “Topological Dirac states and pairing correlations in the non-centrosymmetric superconductor PbTaSe2”, Phys. Rev. B 93, 245130 (2016)
  14. G. Chang, S.-Y. Xu*†, et al., “A strongly robust type II Weyl fermion semimetal state in Ta3S2”, Science Adv. 2, e1600295 (2016)
  15. G. Chang*, S.-Y. Xu*†, et al., “Signatures of Fermi arcs in the quasiparticle interferences of the Weyl semimetals TaAs and NbP”, Phys. Rev. Lett. 116, 066601 (2016)
  16. T. Chang, S.-Y. Xu†, et al., “Prediction of an arc-tunable Weyl fermion metallic state in MoxW1-xTe2”, Nature Comm. 7, 10639 (2016)
  17. S. Huang*, S.-Y. Xu*†, et al., “New type of Weyl semimetal with quadratic double Weyl fermions in SrSi2”, PNAS 113, 1180 (2016)
  18. T. Chang, T. Das, P. Chen, M. Neupane, S.-Y. Xu, et al., “Two distinct topological phases in the mixed-valence compound YbB6 and its differences from SmB6”, Phys. Rev. B 91, 155151 (2015)
  19. S. Huang*, S.-Y. Xu*†, et al., “A Weyl fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class”, Nature Comm. 6, 7373 (2015)
  20. C. Fang, M. Gilbert, S.-Y. Xu, et al., “Theory of quasiparticle interference in mirror symmetric 2D systems and its application to surface states of topological crystalline insulators”, Phys. Rev. B 88, 125141 (2013)
  21. Y. Wang, W. Tsai, H. Lin, S.-Y. Xu, et al., “Nontrivial spin texture of the coaxial Dirac cones on the surface of topological crystalline insulator SnTe”, Phys. Rev. B 87, 235317 (2013)
  22. H. Lin, T. Das, Y. Wang, L. Wray, S.-Y. Xu, et al., “Adiabatic transformation as a search tool for new topological insulators: Distorted ternary Li2AgSb-class semiconductors and related compounds”, Phys. Rev. B 87, 121202 (2013)
  23. H. Lin, T. Das, L. Wray, S.-Y. Xu, et al., “An isolated Dirac cone on the surface of ternary tetradymite-like topological insulators”, New Journal of Physics 13, 095005 (2011)
  24. S. Basak, H. Lin, L. Wray, S.-Y. Xu, et al., “Spin texture on the warped Dirac-cone surface states in topological insulators”, Phys. Rev. B84, 121401(R) (2011)
  25. H. Lin, L. Wray, Y. Xia, S.-Y. Xu, et al., “Half-Heusler ternary compounds as new multifunctional experimental platforms for topological quantum phenomena”, Nature Materials 9, 546-549 (2010)
  26. W. Al-Sawai, H. Lin, R. Markiewicz, L. Wray, Y. Xia, S.-Y. Xu, et al., “Topological electronic structure in half-Heusler topological insulators”, Phys. Rev. B82, 125208 (2010)

IV. STM studies

  1. J. Yin, S. Zhang, H. Li, K. Jiang, G. Chang, B. Zhang, B. Lian, C. Xiang, I. Belopolski, H. Zheng, T. Cochran, S.-Y. Xu, et al., “Giant and anisotropic spin–orbit tunability in a strongly correlated kagome magnet”, Nature 562, 91 (2018)
  2. H. Zheng, G. Chang, S. Huang, C. Guo, X. Zhang, S. Zhang, J. Yin, S.-Y. Xu, et al., “Mirror protected Dirac fermions on a Weyl semimental NbP surface”, Phys. Rev. Lett. 119, 196403 (2017)
  3. H. Zheng, G. Bian, G. Chang, H. Lu, S.-Y. Xu, et al., “Atomic-scale visualization of quasiparticle interference on a type-II Weyl semimetal surface”, Phys. Rev. Lett. 117, 266804 (2016)
  4. H. Zheng*, S.-Y. Xu*,et al., “Atomic scale visualization of quantum interference on a Weyl semimetal surface by scanning tunneling microscopy/spectroscopy”, ACS Nano 10, 1378 (2016)
  5. Y. Okada, M. Serbyn, H. Lin, D. Walkup, W. Zhou, C. Dhital, M. Neupane, S.-Y. Xu, et al., “Observation of Dirac node formation and mass acquisition in a topological crystalline insulator”, Science341, 1496-1499 (2013)

V. Transport studies

  1. C. Zhang, S.-Y. Xu, et al., “Magnetic-tunneling-induced Weyl node annihilation in TaP”, Nature Phys. 13, 979 (2017)
  2. Q. Zhang, B. Zeng, D. Rhodes, S. Memaran, T. Besara, R. Sankar, F. Chou, N. Alidoust, S.-Y. Xu, et al., “Magnetic field-induced electronic and topological phase transitions in Weyl type-I semi-metals”, arXiv: 1705.00920 (2017)
  3. E. Emmanouilidou, B. Shen, X. Deng, T. Chang, A. Shi, G. Kotliar, S.-Y. Xu & Ni Ni, “Magneto-transport properties of the” hydrogen atom” nodal-line semimetal candidates CaTX (T= Ag, Cd, X= As, Ge)”, Phys. Rev. B 95, 245113 (2017)
  4. C. Zhang, F. Schindler, H. Liu, T. Chang, S.-Y. Xu, et al., “Ultraquantum magnetoresistance in the Kramers-Weyl semimetal candidate β−Ag2Se”, Phys. Rev. B 96, 165148 (2017)
  5. X. Wang, X. Ma, E. Emmanouilidou, B. Shen, C. Hsu, C. Zhou, Y. Zuo, R. Song, S.-Y. Xu, et al., “Topological surface electronic states in candidate nodal-line semimetal CaAgAs”, Phys. Rev. B 96, 161112(R) (2017)
  6. E. Emmanouilidou, B, Shen, X. Deng, T. Chang, A. Shi, G. Kotliar, S.-Y. Xu, et al., “Magnetotransport properties of the single-crystalline nodal-line semimetal candidates CaTX (T=Ag,Cd; X=As,Ge)”, Phys. Rev. B 95, 245113 (2017)
  7. C. Zhang*, S.-Y. Xu*, et al., “Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl fermion semimetal”, Nature Comm. 7, 10735 (2016)
  8. C. Zhang, Z. Yuan, S.-Y. Xu, et al., “Exotic superconducting properties in topological nodal semimetal PbTaSe2”, Phys. Rev. B 93, 054520 (2016)
  9. R. Sankar, M. Neupane, S.-Y. Xu, et al., “Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2”, Sci. Rep. 5, 12966 (2015)
  10. S. Kushwaha, J. Krizan, B. Feldman, A. Gyenis, M. Randeria, J. Xiong, S.-Y. Xu,“Bulk crystal growth and electronic characterization of the 3D Dirac Semimetal Na3Bi”, APL Mat.3, 041504 (2015)
  11. Y. Hor, P. Roushan, H. Beidenkopf, J. Seo, D. Qu, J. Checkelsky, L. Wray, D. Hsieh, Y. Xia, S.-Y. Xu, “Development of ferromagnetism in the doped topological insulator Bi2-xMnxTe3”, Phys. Rev. B 81, 195203 (2010)

VI. Review articles and book chapters

  1. M. Z. Hasan, S.-Y. Xu,et al., “Discovery of Weyl fermion semimetals and topological fermi arc states in spin-orbit materials”, Ann. Rev. of Cond. Mat. 8(1) (2017)
  2. S. Jia, S.-Y. Xu,et al., “Weyl semimetals, Fermi arcs and chiral anomalies”, Nature Materials 15, 1140-1144 (2016)
  3. M. Z. Hasan, S.-Y. Xu,et al., “Topological insulators, helical topological superconductors and Weyl fermion semimetals”, Phys. Scr. T 164, 014001 (2015), Proceedings of Nobel Symposium on New Forms of Matter
  4. M. Z. Hasan, S.-Y. Xu,et al., “Topological insulators, topological crystalline insulators, and topological Kondo insulators”, Topological Insulators: Fundamentals and Perspectives edited by F. Ortmann, S. Roche, S.Valenzuela (John Wiley & Sons, 2015)
  5. M. Hasan, S.-Y. Xu,et al., “Topological surface states: a new type of 2D electron systems” in Topological Insulators, book chapter, edited by M. Franz and L. Molenkamp (2013)