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Spectral decomposition and matrix element effects in scanning tunneling spectroscopy of BiSrCaCuO
Jouko Nieminen, Ilpo Suominen, R. S. Markiewicz +2
We present a Green's function based framework for modeling the scanning tunneling spectrum from the normal as well as the superconducting state of complex materials where the natur…
Electron dynamics in topological insulator based semiconductor-metal interfaces (topological p-n interface based on Bi2Se3 class)
L. Andrew Wray, Suyang Xu, Madhab Neupane +10
Single-Dirac-cone topological insulators (TI) are the first experimentally discovered class of three dimensional topologically ordered electronic systems, and feature robust, massl…
Observation of topological order in a Superconducting doped topological insulator (based on the Bi2Se3 class)
L. Andrew Wray, Suyang Xu, Yuqi Xia +7
Topological insulators embody a new state of matter characterized entirely by the topological invariants of the bulk electronic structure rather than any form of spontaneously brok…
Novel Spin-texture on the warped Dirac-cone surface states in topological insulators
Susmita Basak, Hsin Lin, L. A. Wray +4
We have investigated the nature of surface states in the Bi2Te3 family of three-dimensional topological insulators using first-principles calculations as well as model Hamiltonians…
A topological insulator surface under strong Coulomb, magnetic and disorder perturbations
L. Andrew Wray, Su-Yang Xu, Yuqi Xia +7
Three dimensional topological insulators embody a newly discovered state of matter characterized by conducting spin-momentum locked surface states that span the bulk band gap as de…
X-ray absorption near-edge spectra of overdoped La_2-xSr_xCuO_4 high-T_c superconductors
Towfiq Ahmed, Tanmoy Das, J. J. Kas +6
We present results for realistic modeling of the x-ray absorption near edge structure (XANES) of the overdoped high-T_c superconductor La_2-xSr_xCuO_4 in the hole doping range x =…