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Li - O anti-correlation in NGC 6752: evidence for Li-enriched polluting gas
Z. -X. Shen, P. Bonifacio, L. Pasquini +1
Elemental correlations and anti-correlations are known to be present in globular clusters (GCs) owing to pollution by CNO cycled gas. Because of its fragility Li is destroyed at th…
Observation of Single Dirac Cone Topological Surface State in Compounds TlBiTe2 and TlBiSe2 from a New Topological Insulator Family
Yulin Chen, Zhongkai Liu, James G. Analytis +9
Angle resolved photoemission spectroscopy (ARPES) studies were performed on two compounds (TlBiTe and TlBiSe) from a recently proposed three dimensional topological insulat…
Surface and bulk electronic structures of LaOFeAs studied by angle resolved photoemission spectroscopy
L. X. Yang, B. P. Xie, Y. Zhang +15
The electronic structure of LaOFeAs, a parent compound of iron-arsenic superconductors, is studied by angleresolved photoemission spectroscopy. By examining its dependence on photo…
Energy-Dependent Enhancement of the Electron-Coupling Spectrum of the Underdoped Bi2Sr2CaCu2O8+d Superconductor
H. Anzai, A. Ino, T. Kamo +8
We have determined the electron-coupling spectrum of superconducting Bi2Sr2CaCu2O8+d from high-resolution angle-resolved photoemission spectra by two deconvolution-free robust meth…
Doping-dependent nodal Fermi velocity in Bi-2212 revealed by high-resolution ARPES
I. M. Vishik, W. S. Lee, F. Schmitt +8
The improved resolution of laser-based angle-resolved photoemission spectroscopy (ARPES) allows reliable access to fine structures in the spectrum. We present a systematic, doping-…
Zn-impurity effects on quasi-particle scattering in La2-xSrxCuO4 studied by angle-resolved photoemission spectroscopy
T. Yoshida, Seiki Komiya, X. J. Zhou +7
Angle-resolved photoemission measurements were performed on Zn-doped La2-xSrxCuO4 (LSCO) to investigate the effects of Zn impurities on the low energy electronic structure. The Zn-…
Signatures of pressure induced superconductivity in insulating Bi2212
T. Cuk, D. A. Zocco, H. Eisaki +4
We have performed several high pressure electrical resistance experiments on Bi1.98Sr2.06Y0.68Cu2O8, an insulating parent compound of the high-Tc Bi2212 family of copper oxide supe…
Strong energy-momentum dispersion of phonon-dressed carriers in the lightly doped band insulator SrTiO
W. Meevasana, X. J. Zhou, B. Moritz +12
Much progress has been made recently in the study of the effects of electron-phonon (el-ph) coupling in doped insulators using angle resolved photoemission (ARPES), yielding eviden…
Characteristic electronic structure and its doping evolution in lightly-doped to underdoped YBa2Cu3Oy
H. Yagi, T. Yoshida, A. Fujimori +15
We have performed an angle resolved photoemission spectroscopy (ARPES) study of lightly-doped to underdoped YBa2Cu3Oy (YBCO) untwinned single crystals and a core-level x-ray photoe…
Bulk Fermi surface coexistence with Dirac surface state in BiSe: a comparison of photoemission and Shubnikov-de Haas measurements
James G. Analytis, Jiun-Haw Chu, Yulin Chen +4
Shubnikov de Haas (SdH) oscillations and Angle Resolved PhotoEmission Spectroscopy (ARPES) are used to probe the Fermi surface of single crystals of Bi2Se3. We find that SdH and AR…