115 citations · 133 across the 5 of their papers we have counts for
5 papers
A topological Dirac insulator in a quantum spin Hall phase (experimental realization of a 3D Topological Insulator)
D. Hsieh, D. Qian, L. Wray +4
When electrons are subject to a large external magnetic field, the conventional charge quantum Hall effect \cite{Klitzing,Tsui} dictates that an electronic excitation gap is genera…
Observation of topologically protected Dirac spin-textures and πBerry's phase in pure Antimony (Sb) and topological insulator BiSb
D. Hsieh, Y. Xia, L. Wray +10
A topologically ordered material is characterized by a rare quantum organization of electrons that evades the conventional spontaneously broken symmetry based classification of con…
Time-reversal-protected single-Dirac-cone topological-insulator states in Bi2Te3 and Sb2Te3: Topologically Spin-polarized Dirac fermions with pi Berry's Phase
D. Hsieh, Y. Xia, D. Qian +12
We show that the strongly spin-orbit coupled materials Bi2Te3 and Sb2Te3 (first non-Bi topological insulator) and their derivatives belong to the Z2 (Time-Reversal-Protected, elast…
Charge collective modes in an incommensurately modulated cuprate
L. Wray, D. Qian, D. Hsieh +3
We report the first measurement of collective charge modes of insulating Sr14Cu24O41 using inelastic resonant x-ray scattering over the complete Brillouin zone. Our results show th…
Emergence of Fermi pockets in an excitonic CDW melted novel superconductor
D. Qian, D. Hsieh, L. Wray +5
A superconducting (SC) state (Tc ~ 4.2K) has very recently been observed upon successful doping of the CDW ordered triangular lattice TiSe, with copper. Using high resolution p…