Group Members

Research Publications Lab Facilities
Computation Platform
Collaborators
Internal Links
News

One of the early reviews on "Topological Superconductors":
“Topo. Insulators (and Superconductors)"
Hasan & Kane, Rev. of Mod. Phys. 82, 3045 (2010)


Another review :
Topo. Insulators, Topo. Superconductors and Weyl Semimetals
Hasan, Xu and Bian, Phys. Scr. T164 014001 (2015)


RVB (Anderson) model is an early example of topological phase
P.W. Anderson on topological matter research (NSF news)


Some superconductors are based on Bi2Se3 materials: "Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator (Bi2Se3) class with spin-polarized single-Dirac-cone on the surface" (Submitted 2008)

Field-free platform for Majorana-like zero modes in superconductors with a topological surface state

S. S. Zhang, J.-X. Yin, G. Dai, L. Zhao, T.-R. Chang, N. Shumiya, K. Jiang, H. Zheng, G. Bian, D. Multer, M. Litskevich, G. Chang, I. Belopolski, T. Cochran, X. Wu, D. Wu, J. Luo, G. Chen, H. Lin, F.-C. Chou, X. Wang, C. Jin, R. Sankar, Z. Wang, and M. Z. Hasan
Phys. Rev. B 101, 100507 (2020)

Spin-orbital ground states of superconducting doped topological insulators: A Majorana platform
L. Wray, S. Xu, Y. Xia, D. Qian, A. Fedorov, H. Lin, A. Bansil, Liang Fu, Y. Hor, R. J. Cava, and M. Z. Hasan
Phys. Rev. B 83, 224516 (2011)

Chiral Majorana Fermion Modes on the Surface of Superconducting Topological Insulators

Ching-Kai Chiu, Guang Bian, Hao Zheng, Jia-Xin Yin, Songtian S. Zhang, D. S. Sanchez, I. Belopolski, Su-Yang Xu and M. Zahid Hasan
Europhysics Letters 123, 47005 (2018)

Topological Dirac surface states and superconducting pairing correlations in PbTaSe2 (Topological Superconductor Candidate)

T.-R. Chang, P.-J. Chen, G. Bian, S.-M. Huang, H. Zheng, T. Neupert, R. Sankar, S.-Y. Xu, I. Belopolski, G. Chang, B. Wang, F. Chou, A. Bansil, H.-T. Jeng, H. Lin, and M. Z. Hasan
Phys. Rev. B 93, 245130 (2016)

Superconducting properties in single crystals of the topological nodal semimetal PbTaSe2

C.-L. Zhang, Z. Yuan, G. Bian, S.-Y. Xu, X. Zhang, M. Z. Hasan, and S. Jia
Phys. Rev. B 93, 054520 (2016)

Momentum-space imaging of Cooper pairing in a half-Dirac-gas topological superconductor
Su-Yang Xu, Nasser Alidoust, Ilya Belopolski, Anthony Richardella, Chang Liu, Madhab Neupane, Guang Bian, Song-Hsun Huang, Raman Sankar, Chen Fang, Brian Dellabetta, Wenqing Dai, Qi Li, Matthew J. Gilbert, Fangcheng Chou, Nitin Samarth & M. Zahid Hasan
Nature Physics 10, 943 (2014)

Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd
M. Neupane, N. Alidoust, M. Hosen, K. Dimitri, Jian-Xin Zhu, Su-Yang Xu, Nagendra Dhakal, Raman Sankar, Ilya Belopolski, Daniel S. Sanchez, Tay-Rong Chang, Horng-Tay Jeng, Koji Miyamoto, Taichi Okuda, Hsin Lin, Arun Bansil, D. Kaczorowski, F.C. Chou, M. Z. Hasan & T. Durakiewicz
Nature Communications (2016)

Observation of topological order in a superconducting doped topological insulator
L. Andrew Wray, Su-Yang Xu, Yuqi Xia, Yew San Hor, Dong Qian, Alexei V. Fedorov, Hsin Lin, Arun Bansil, Robert J. Cava & M. Zahid Hasan
Nature Physics 6, 855 (2010)



 
High Tc and Correlated Superconductors


1999 - present

Photoemission Studies on Bi2Sr2CaCuZnO - Electronic Structure Evolution and Temperature Dependence
P. White, Z.X. Shen, D. Feng, C.Y. Kim, M. Z. Hasan, J. M. Harris, A. G. Loeser et.al.,
arXiv:cond-mat/9901349 (1999)


Zn Impurities in BiSrCa(CuZn)O - Temperature Induced Spectral Change
P. J. White, Z. X. Shen, D. L. Feng, C. Kim, M. Z. Hasan, A. G. Loeser, H. Ikeda et.al.,
arXiv:cond-mat/9901354 (1999)


Science 288, 1811 (2000).
Phys. Rev. B. 78, 184508 (2008).
Phys. Rev. Lett. 103, 037002 (2009).
Phys. Rev. B. 85, 094510 (2012).

Nature of Correlated Motion of Electrons in the Parent Cobaltate Superconductors
M. Z. Hasan, D. Qian, Y. Li, A. V. Fedorov, Y. -D. Chuang, A. P. Kuprin, M. L. Foo et.al.,
Annals of Physics 321 (7): 1568-1574 (2006)


"Vector field controlled vortex lattice symmetry in a correlated superconductor using scanning tunneling microscopy"
Physical Review B 99 (16), 161103 (2019).

Quantum Phase Transition of Correlated Iron-Based Superconductivity
Physical Review Letters (2019)


Exotic Superconductivity and P.W.Anderson theorem? (Princeton 2019)

Field-free platform for Majorana-like zero modes in superconductors with a topological surface state

S. S. Zhang, J.-X. Yin, G. Dai, L. Zhao, T.-R. Chang, N. Shumiya, K. Jiang, H. Zheng, G. Bian, D. Multer, M. Litskevich, G. Chang, I. Belopolski, T. Cochran, X. Wu, D. Wu, J. Luo, G. Chen, H. Lin, F.-C. Chou, X. Wang, C. Jin, R. Sankar, Z. Wang, and M. Z. Hasan
Phys. Rev. B 101, 100507 (2020)



(Unpredicted) and/or Unexpected Novel Quantum Effects (Link)
Quantum Many-Body Physics:
Discovery of unconventional chiral charge order in the normal state of kagome superconductor KV3Sb5
Nature Materials (2021)
Giant and anisotropic many-body spin-orbit tunability in a strongly correlated kagome magnet
Nature 562, 91-95 (2018)
Many-body Resonance in a Correlated Topological Kagome Antiferromagnet
Physical Review Letters 125, 046401 (2020)
Anomalous transport and chiral charge order in kagome superconductor CsV3Sb5
arXiv:2105.04542 (2021)
Rare earth engineering (of many-body physics) in topological kagome magnets arXiv:2007.09913 (2020)
Physical Review Letters (2021)
Nodeless kagome superconductivity in LaRu3Si2 (Novel kagome superconductors)
Phys. Rev. M 5, 034803 (2021)
Fermion-boson many-body interplay in a frustrated kagome paramagnet
Nature Commun. 11, 4003 (2020)
Negative flatband magnetism in a spin-orbit coupled kagome magnet
Nature Physics 15, 443 (2019)
Observation of metallic surface states in the strongly correlated Kitaev-Heisenberg candidate
Phys. Rev. B 93, 245132 (2016)
Fermi surface topology and hot spot distribution in the Kondo lattice system CeB6.
Phys. Rev. B 92, 104420 (2015).
Quantum phase transition of correlated iron-based superconductors
Physical Review Letters 123, 217004 (2019)
Fermi surface topology and quasiparticle dynamics of host cobaltate superconductors
Physical Review Letters 92, 246402 (2004).
Momentum dependence of superconducting gap, strong-coupling dispersion kink, and tightly bound Cooper pairs in the high-Tc (Sr,Ba)1-x(K,Na)xFe2As2 superconductors.
Phys. Rev. B 78, 184508 (2008).
Low-lying quasiparticle modes and hidden collective charge instabilities in parent cobaltates superconductors.
Physical Review Letters 96, 216405 (2006).
Emergence of Fermi Pockets in a New Excitonic Charge-Density-Wave Melted Superconductor.
Physical Review Letters 98, 117007 (2007).


 
  wray2008  
 
Momentum dependence of superconducting gap, strong-coupling dispersion kink, and tightly bound Cooper pairs in the high-Tc (Sr,Ba)1-x(K,Na)xFe2As2 superconductors
Published in L. Wray, D. Qian, D. Hsieh et al., Phys. Rev. B. 78, 184508 (2008)

 
  Xia  
 
Fermi Surface Topology and Low-Lying Quasiparticle Dynamics of Parent Fe1+xTe/Se Superconductor.
Published in Y. Xia, D. Qian, L. Wray, et al., Phys. Rev. Lett. 103, 037002 (2009).

 
  FeAsO  
 

We report a first study of low energy electronic structure and Fermi surface topology for the recently discovered iron-based superconductor Ca10(Pt3As8)(Fe2As2)5 (the 10-3-8 phase, with Tc ~8K), via angle resolved photoemission spectroscopy (ARPES). Our results suggest that intermediary layers Pt3As8 couple only weakly to the FeAs layers in this new superconductor.

 
 
Fermi surface topology and low-lying electronic structure of a new iron-based superconductor Ca10(Pt3As8)(Fe2As2)5.
Published in Madhab Neupane, C. Liu, S.-Y. Xu, et al., Phys. Rev. B. 85, 094510 (2012).