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Observation of metallic surface states in the strongly correlated Kitaev-Heisenberg candidate Na2IrO3
Nasser Alidoust, Chang Liu, Su-Yang Xu +11
We report high-resolution angle-resolved photoemission spectroscopy measurements on the honeycomb iridate Na2IrO3. Our measurements reveal the existence of a metallic surface band…
Momentum space imaging of Cooper pairing in a half-Dirac-gas topological superconductor (a helical 2D topological superconductor)
Su-Yang Xu, Nasser Alidoust, Ilya Belopolski +14
Superconductivity in Dirac electrons has recently been proposed as a new platform between novel concepts in high-energy and condensed matter physics. It has been proposed that supe…
Observation of topological surface state quantum Hall effect in an intrinsic three-dimensional topological insulator
Yang Xu, Ireneusz Miotkowski, Chang Liu +7
A three-dimensional (3D) topological insulator (TI) is a quantum state of matter with a gapped insulating bulk yet a conducting surface hosting topologically-protected gapless surf…
Controlling and distinguishing electronic transport of topological and trivial surface states in a topological insulator
Helin Cao, Chang Liu, Jifa Tian +4
Topological insulators (TI), with characteristic Dirac-fermion topological surface states (TSS), have emerged as a new class of electronic materials with rich potentials for both n…
A Neutron Scattering Study of the H-T Phase Diagram of the Bond Frustrated ZnCr2S4
D. Hsieh, Y. W. Li, S. Watauchi +5
Detailed neutron scattering measurements on the bond frustrated magnet ZnCr2S4 reveal a rich H-T phase diagram. The field dependence of the two subsequent antiferromagnetic transit…
Spin Order by Quantum Frustration in Triangular Lattice Mott Insulator NaCrO2 : A Neutron Scattering Study
D. Hsieh, D. Qian, R. F. Berger +7
We report high resolution neutron scattering measurements on the triangular lattice Mott insulator NaCrO (=1) which has recently been shown to exhibit an unusually broad…