TY - JOUR
T1 - Raman spectra of Hg-based superconductors
T2 - Effect of oxygen defects
AU - Zhou, Xingjiang
AU - Cardona, M.
AU - Chu, C.
AU - Lin, Q.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1996
Y1 - 1996
N2 - Polarized micro-Raman scattering measurements have been performed on the five members of the (Formula presented) ((Formula presented)) high-(Formula presented) superconductor family. A systematic evolution of the spectrum, which mainly involves oxygen-related phonons around 590, 570, 540, and 470 (Formula presented), with an increasing number of Cu(Formula presented) layers, has been observed. Local laser annealing measurements clearly demonstrate that all these phonons are closely related to interstitial oxygen in the (Formula presented) planes. The origin of the spectrum evolution with the number of Cu(Formula presented) layers lies in the variation of interstitial oxygen content.
AB - Polarized micro-Raman scattering measurements have been performed on the five members of the (Formula presented) ((Formula presented)) high-(Formula presented) superconductor family. A systematic evolution of the spectrum, which mainly involves oxygen-related phonons around 590, 570, 540, and 470 (Formula presented), with an increasing number of Cu(Formula presented) layers, has been observed. Local laser annealing measurements clearly demonstrate that all these phonons are closely related to interstitial oxygen in the (Formula presented) planes. The origin of the spectrum evolution with the number of Cu(Formula presented) layers lies in the variation of interstitial oxygen content.
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U2 - 10.1103/PhysRevB.54.6137
DO - 10.1103/PhysRevB.54.6137
M3 - Article
AN - SCOPUS:0001671005
SN - 1098-0121
VL - 54
SP - 6137
EP - 6140
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 9
ER -