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On the 590cm-1 B1g feature in underdoped Bi2Sr2CaCu2O8+delta | | Kevin C. Hewitt
; N. L. Wang
; J. C. Irwin
; D. M. Pooke
; A. E. Pantoja
; H. J. Trodahl
; | | Date: |
1 Apr 1999 | | Journal: | Phys. Rev. B 60 (1999) R9943 | | Subject: | Superconductivity | cond-mat.supr-con | | Abstract: | Raman scattering studies have been performed on underdoped Bi2Sr2CaCu2O8+delta. In single crystals underdoped by oxygen removal, a 590 cm-1 peak is observed in the B1g spectrum. The feature is observed to soften in frequency by 3.8% with isotopic exchange for 16-O by 18-O. In contrast, the 590cm-1 peak is not observed in crystals underdoped by Y substitution which suggests that it correspond to a disorder induced vibrational mode. We have also found that underdoping leads to a depletion of low energy spectral weight from regions of the Fermi surface located near the Brillouin zone axes. | | Source: | arXiv, cond-mat/9904002 | | Services: | Forum | Review | PDF | Favorites | |
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