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A new form of (unexpected) Dirac fermions in the strongly-correlated cerium monopnictides
Nasser Alidoust, A. Alexandradinata, Su-Yang Xu +14
Discovering Dirac fermions with novel properties has become an important front in condensed matter and materials sciences. Here, we report the observation of unusual Dirac fermion…
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…
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…
Non-Kondo-like Electronic Structure in the Correlated Rare-Earth Hexaboride YbB
Madhab Neupane, Su-Yang Xu, Nasser Alidoust +11
We present angle-resolved photoemission studies on the rare-earth hexaboride YbB, which has recently been predicted to be a topological Kondo insulator. Our data do not agree w…
Search for superconducting proximity effect in a topological insulator and high temperature superconductor heterostructure Bi2Se3/Bi2Sr2CaCu2O8+
Su-Yang Xu, Chang Liu, Anthony Richardella +6
Understanding the superconducting proximity effect on the surface of a topological insulator is of critical importance in realizing topological superconductivity and Majorana fermi…
Spin correlated electronic state on the surface of a spin-orbit Mott system (Layered Iridates)
Chang Liu, Su-Yang Xu, Nasser Alidoust +13
Novel phases of two dimensional electron systems resulting from new surface or interface modified electronic structures have generated significant interest in material science. We…
Surface electronic structure of the topological Kondo insulator candidate correlated electron system SmB6
Madhab Neupane, Nasser Alidoust, SuYang Xu +15
The Kondo insulator SmB6 has long been known to exhibit low temperature transport anomalies whose origin is of great interest. Here we uniquely access the surface electronic struct…
An experimental algorithm for identifying the topological nature of Kondo and mixed valence insulators
M. Neupane, N. Alidoust, Suyang Xu +9
Possible topological nature of Kondo and mixed valence insulators has been a recent topic of interest in condensed matter physics. Attention has focused on SmB6, which has long bee…
Surface electronic structure of a topological Kondo insulator candidate SmB6: insights from high-resolution ARPES
M. Neupane, N. Alidoust, S. -Y. Xu +13
The Kondo insulator SmB6 has long been known to exhibit low temperature (T < 10K) transport anomaly and has recently attracted attention as a new topological insulator candidate. B…
Anomalous spin-momentum locked two-dimensional states in the vicinity of a topological phase transition
Su-Yang Xu, M. Neupane, Chang Liu +12
We perform spin-resolved and spin-integrated angle-resolved photoemission spectroscopy measurements on a series of compositions in the BiTl(S1-xSex)2 system, focusing on x-values i…