RAMAN-STUDY OF YBA2CU3O7-X SINGLE-CRYSTALS GROWN BY A PULLING TECHNIQUE - OVERDOPED, UNDERDOPED, AND NONSUPERCONDUCTING STATE

被引：11

作者：

MISOCHKO, OV

TAJIMA, S

MIYAMOTO, S

KOBAYASHI, H

KAGIYA, S

WATANABE, N

KOSHIZUKA, N

TANAKA, S

机构：

[1] TOKAI UNIV, DEPT PHYS, HIRATSUKA, KANAGAWA 25911, JAPAN

[2] MEIJI UNIV, DEPT ENGN ELECTR COMMUN, KAWASAKI, KANAGAWA, JAPAN

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.51.1346

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured the Raman scattering from three single crystals of YBa2Cu3O7-x at high, x→0, intermediate, x0.5, and low doping level, x0.15. Both fully symmetrical diagonal and off-diagonal phonons without any disorder induced modes have been identified for x→0, whereas only diagonal scattering showed substantial strength in the other two crystals. The high frequency of the apical oxygen phonon, reaching 517 cm-1 at room temperature for x→0, has been found to be a hallmark of the crystals grown by a pulling technique. © 1995 The American Physical Society.

引用

页码：1346 / 1349

页数：4

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