Oxygen-isotope effect on the high-frequency Raman phonons in Bi2Sr2CaCu2O8+δ

被引：26
作者：
Pantoja, AE
Pooke, DM
Trodahl, HJ
Irwin, JC
机构：
[1] Ind Res Ltd, Lower Hutt, New Zealand
[2] Victoria Univ Wellington, Dept Phys, Wellington, New Zealand
[3] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada
来源：
PHYSICAL REVIEW B | 1998年 / 58卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.58.5219
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Raman spectra have been obtained from single-crystal samples of Bi2Sr2CaCu2O8+delta With varying degrees of oxygen-isotope exchange. A comparison of the high-energy (greater than or equal to 400 cm(-1)) vibrational spectra obtained from an unexchanged sample, a partially exchanged sample and a fully exchanged crystal has been carried out to obtain an unambiguous assignment of the A(1g) modes at 465 and 630 cm(-1). The 465 mode is assigned to c-axis vibrations of O(3) atoms in the Bi-O layers and the 630 mode to the O(2) apical oxygen atoms in the Sr-O layers.
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收藏
页码：5219 / 5221
页数：3
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