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Fourier-based methods for removing mesh anomalies from angle resolved photoemission spectra
Shouzheng Liu, Erica Kotta, Yishuai Xu +6
Recent improvements to spatial resolution in angle-resolved photo-emission spectroscopy (ARPES) have made it common to perform measurements with a very brief dwell time, for the pu…
Observation of a Topological Insulator Dirac Cone Reshaped by Non-magnetic Impurity Resonance
Lin Miao, Yishuai Xu, Wenhan Zhang +10
The massless Dirac electrons found at topological insulator surfaces are thought to be influenced very little by weak, non-magnetic disorder. However, a resonance effect of strongl…
Connection topology of step edge state bands at the surface of a three dimensional topological insulator
Yishuai Xu, Guodong Jiang, Janet Chiu +5
Topological insulators in the BiSe family manifest helical Dirac surface states that span the topologically ordered bulk band gap. Recent scanning tunneling microscopy meas…
High resolution resonant inelastic EUV scattering from orbital excitations in a Heisenberg antiferromagnet
Antonio Caretta, Martina Dell'Angela, Yi-De Chuang +11
We report the high resolution resonant inelastic EUV scattering study of quantum Heisenberg antiferromagnet KCoF3. By tuning the EUV photon energy to cobalt M23 edge, a complete se…
Spectroscopic determination of the atomic f-electron symmetry underlying hidden order in URuSi
L. Andrew Wray, Jonathan Denlinger, Shih-Wen Huang +5
The low temperature hidden order state of URuSi has long been a subject of intense speculation, and is thought to represent an as yet undetermined many-body quantum state n…
Adiabatic transformation as a search tool for new topological insulators: distorted ternary LiAgSb-class semiconductors and related compounds
Hsin Lin, Tanmoy Das, Yung Jui Wang +4
We demonstrate that first-principles based adiabatic continuation approach is a very powerful and efficient tool for constructing topological phase diagrams and locating non-trivia…