DETERMINATION OF HIGH-FREQUENCY PSEUDOSURFACE MODE VELOCITY IN HIGH-TC SUPERCONDUCTING RBA2CU3O7-Y (R= TM, ER, HO, DY, GD, EU, SM, ND, PR) SINGLE-CRYSTALS BY MANDELSTAMM BRILLOUIN LIGHT-SCATTERING SPECTRA

被引：1
作者：
ALEKSANDROV, VV
VELICHKINA, TS
POTAPOVA, JB
VORONKOVA, VI
YAKOVLEV, IA
YANOVSKII, VK
机构：
[1] Physics Department, Moscow State University, Moscow
来源：
SOLID STATE COMMUNICATIONS | 1992年 / 84卷 / 05期
关键词：
D O I：
10.1016/0038-1098(92)90181-8
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The registration of Mandelstamm-Brillouin spectral lines corresponding to High Frequency Pseudo Surface Mode (HFPSM) and consequent V(HFPSM) velocity determination in both orthorhombic and tetragonal structured RBa2Cu3O7-y crystals is reported. For orthrhombic crystals V(HFPSM) drops from 5.8 to 5.2 km/s with the increase of R element ionic radius from R= Tm to Pr, and V(HFPSM) values measured in non-superconducting tetragonal structured crystals are 5-6% lower than in more oxygen saturated orthrhombic crystals. Similar dependencies from the crystals nature may be assumed also to corresponding bulk longitudinal velocity values.
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页码：517 / 521
页数：5
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