activity
20062026
most citedDiscovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface

3.8k citations · 8.1k across the 27 of their papers we have counts for

collaborators

27 papers

cond-mat.mtrl-sci2026

From Narrow-gap Semiconductor to Metallic Altermagnet: Optical Fingerprints of Co-Doped FeSb2

R. Mathew Roy, M. Povolotskiy, J. Kirschke +11

The realization of bulk metallic altermagnetism has remained elusive despite the growing number of candidate materials. Here, we present evidence that moderate cobalt substitution…

cond-mat.mtrl-sci2021★ 15 cited

Evidence of topological edge states in a superconducting nonsymmorphic nodal-line semimetal

L. X. Xu, Y. Y. Y. Xia, S. Liu +18

Topological materials host fascinating low dimensional gapless states at the boundary. As a prominent example, helical topological edge states (TESs) of two-dimensional topological…

cond-mat.mtrl-sci2018★ 35 cited

Photoemission Study of the Electronic Structure of Valence Band Convergent SnSe

C. W. Wang, Y. Y. Y. Xia, Z. Tian +17

IV-VI semiconductor SnSe has been known as the material with record high thermoelectric performance.The multiple close-to-degenerate valence bands in the electronic band structure…

cond-mat.mtrl-sci2012

Electron behavior in topological insulator based P-N overlayer interfaces

L. A. Wray, M. Neupane, S. -Y. Xu +8

Topological insulators (TIs) are novel materials that manifest spin-polarized Dirac states on their surfaces or at interfaces made with conventional matter. We have measured the el…

cond-mat.mes-hall2012★ 4 cited

Dirac point spectral weight suppression and surface "gaps" in nonmagnetic and magnetic topological insulators

Su-Yang Xu, L. A. Wray, N. Alidoust +7

It is predicted that electrons on the surface of a topological insulator can acquire a mass (massive Dirac fermion) by opening up a gap at the Dirac point when time-reversal symmet…

cond-mat.mes-hall2011

Direct observation of spin-polarized surface states in the parent compound of topological insulator Bi-Sb using spin-resolved-ARPES in a 3D Mott-polarimetry spin mode

D. Hsieh, Y. Xia, L. Wray +9

We report high-resolution spin-resolved photoemission spectroscopy (Spin-ARPES) measurements on the parent compound Sb of the first discovered 3D topological insulator Bi{1-x}Sb{x}…