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Observation of unconventional band topology in a superconducting doped topological insulator, Cux-Bi2Se3: Topological Superconductor or non-Abelian superconductor?
L. Wray, S. Xu, J. Xiong +7
The Cu-doped topological insulator BiSe has recently been found to undergo a superconducting transition upon cooling, raising the possibilities that it is the first known "…
Fermi surface topology and low-lying quasiparticle dynamics of parent FeTe/Se Superconductor by orbital-polarization resolved ARPES
Y. Xia, D. Qian, L. Wray +5
We report the first photoemission study of FeTe - the host compound of the newly discovered iron-chalcogenide superconductors (maximum T 27K). Our results reveal…
Fermi surface topology and low-lying quasiparticle structure of magnetically ordered Fe1+xTe
Y. Xia, D. Qian, L. Wray +5
We report the first photoemission study of Fe1+xTe - the host compound of the newly discovered iron-chalcogenide superconductors. Our results reveal a pair of nearly electron- hole…
Experimental determination of the microscopic origin of magnetism in parent iron pnictides
D. Hsieh, Y. Xia, L. Wray +7
Like high Tc cuprates, the newly discovered iron based superconductors lie in close proximity to a magnetically ordered parent phase. However, while the magnetic order in parent cu…
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
L. Wray, D. Qian, D. Hsieh +13
We present a systematic angle-resolved photoemission spectroscopic study of the high-Tc superconductor class (Sr/Ba){1-x}(K/Na)xFe2As2. By utilizing a photon-energy-modulation cont…
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…