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LIU Chang

Associate Professor

Department of Physics


Room 129, Research Building 2

Brief Introduction

Chang Liu, Associate Professor at the Department of Physics, SUSTC. Dr. Liu’s research mainly focuses on revealing the novel electronic properties of high temperature superconductors and topologically non-trivial materials (e.g. topological insulators), as well as the exotic electronic behavior in graphene and related structures, using angle resolved photoemission spectroscopy (ARPES) and other spectroscopic techniques. Being one of the pioneers on the ARPES research on iron-based high temperature superconductors (FeSCs), he conducted several early ARPES experiments on FeSCs, revealing the importance of electronic structure dimensionality in understanding their high temperature superconductivity, as well as discovering several Lifshitz transitions (topological changes in the Fermi surface due to doping-driven rigid band shifting) that have direct impact on their superconducting properties. On the field of topologically non-trivial materials, his works presented an exotic surface state in three dimensional Dirac semimetals, and the first example of topological crystalline insulator (TCI).


Research Interests

1. The technique of angle resolved photoemission spectroscopy (ARPES) and ultrahigh vacuum;

2. Electronic properties of iron-based high temperature superconductors;

3. Exotic electronic behavior in topological insulators and topologically nontrivial materials;

4. Electronic properties of graphene and related structures.


Professional Experiences

2015-Present : Associate Professor, Department of Physics, SUSTC

2014-2015: Assistant Professor, Department of Physics, SUSTC

2011-2014: Postdoctoral Research Associate, Princeton University (USA)


Educational Background

2006-2011: PhD in Condensed Matter Physics, Iowa State University (USA)

2003-2006: BS in Department of Physics, Sun Yat-sen University (China)

2001-2003: Department of Urban Planning, Sun Yat-sen University (China)


Honors & Awards

2014: Recipient of the “Peacock plan Award”, Shenzhen


Selected Publications

1. Xiao-Bo Wang*, Xiao-Ming Ma* et al., Topological surface electronic states in candidate nodal-line semimetal CaAgAs. Phys. Rev. B 96, 161112(R) (2017) (Chang Liu as corresponding author)
2. Qiangsheng Lu et al., Unexpected large hole effective masses in SnSe revealed by angle-resolved photoemission spectroscopy. Phys. Rev. Lett. 119, 116401 (2017) (Chang Liu as corresponding author)
3. N. Alidoust, Chang Liu et al., Observation of metallic surface states in the strongly correlated Kitaev-Heisenberg candidate Na2IrO3. Phys. Rev. B 93, 245132 (2016)
4. S. Jiang*, Chang Liu* et al., Structural and magnetic phase transitions in Ca0.73La0.27FeAs2 with electron-overdoped FeAs layers. Phys. Rev. B 93, 054522 (2016)
5. Chang Liu et al., Tunable spin helical Dirac quasiparticles on the surface of three-dimensional HgTe. Phys. Rev. B 92, 115436 (2015)
6. Su-Yang Xu*, Chang Liu* et al., Observation of Fermi arc surface states in a topological metal. Science 347, 294 (2015)
7. Yang Xu, Ireneusz Miotkowski, Chang Liu et al., Observation of topological surface state quantum Hall effect in an intrinsic three-dimensional topological insulator. Nature Physics 10, 956 (2014)
8. Chang Liu et al., Spin-correlated electronic state on the surface of a spin-orbit Mott system. Phys. Rev. B 90, 045127 (2014)
9. Su-Yang Xu, Chang Liu et al., Observation of a topological crystalline insulator phase and topological phase transition in Pb1-xSnxTe. Nature Communications 3, 1192 (2012)
10. Su-Yang Xu, M. Neupane, Chang Liu et al., Hedgehog spin texture and Berry’s phase tuning in a magnetic topological insulator. Nature Physics 8, 616 (2012)
11. M. Neupane*, Chang Liu* et al., Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca10(Pt3As8)(Fe2As2)5. Phys. Rev. B 85, 094510 (Editor's suggestion) (2012)
12. R. S. Dhaka, Chang Liu et al., What controls the phase diagram and superconductivity in Ru-substituted BaFe2As2? Phys. Rev. Lett. 107, 267002 (2011)
13. Chang Liu et al., Importance of Fermi surface topology to the superconducting state of the electron-doped pnictide Ba(Fe1-xCox)2As2. Phys. Rev. B 84, 020509(R) (2011)
14. Chang Liu et al., Metallic surface electronic state in half-Heusler compounds RPtBi (R = Lu, Dy, Gd). Phys. Rev. B 83, 205133 (2011)
15. Chang Liu et al., Surface-driven electronic structure in LaFeAsO studied by angle-resolved photoemission spectroscopy. Phys. Rev. B 82, 075135 (Editor's suggestion) (2010)
16. Chang Liu*, Takeshi Kondo* et al., Evidence for a Lifshitz transition in electron-doped iron arsenic superconductors at the onset of superconductivity. Nature Physics 6, 419 (2010)
17. Takeshi Kondo, R. M. Fernandes, R. Khasanov, Chang Liu et al., Unexpected Fermi-surface nesting in the pnictide parent compounds BaFe2As2 and CaFe2As2 revealed by angle-resolved photoemission spectroscopy. Phys. Rev. B 81, 060507(R) (2010)
18. Chang Liu et al., Electronic properties of iron arsenic high temperature superconductors revealed by angle resolved photoemission spectroscopy (ARPES). Physica C 469, 491 (2009)
19. Chang Liu et al., Three- to two-dimensional transition of the electronic structure in CaFe2As2: A parent compound for an iron arsenic high-temperature superconductor. Phys. Rev. Lett. 102, 167004 (2009)
20. Chang Liu et al., K-Doping dependence of the Fermi surface of the iron-arsenic Ba1-xKxFe2As2 superconductor using angle-resolved photoemission spectroscopy. Phys. Rev. Lett. 101, 177005 (2008)
21. Takeshi Kondo, A. F. Santander-Syro, O. Copie, Chang Liu et al., Momentum dependence of the superconducting gap in NdFeAsO0.9F0.1 single crystals measured by angle resolved photoemission spectroscopy. Phys. Rev. Lett. 101, 147003 (2008)
* First author with equal contribution






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