INELASTIC-NEUTRON-SCATTERING STUDY OF THE ELECTRON-PHONON INTERACTION IN A SUPERCONDUCTING LA1.85SR0.15CUO4 SINGLE-CRYSTAL

被引：6

作者：

CHOU, H ^{[1
]}

YAMADA, K ^{[1
]}

AXE, JD ^{[1
]}

SHAPIRO, SM ^{[1
]}

SHIRANE, G ^{[1
]}

TANAKA, I ^{[1
]}

YAMANE, K ^{[1
]}

KOJIMA, H ^{[1
]}

机构：

[1] YAMANASHI UNIV,KOFU,YAMANASHI 400,JAPAN

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.42.4272

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Linewidths of some transverse acoustic phonons have been studied as a function of temperature on a superconducting single-crystal sample of La1.85Sr0.15CuO4 (Tc=33 K) with the goal of measuring the electron-phonon interaction. The phonons studied have energies in the range 6.0 9.5 meV and observed full widths at half-maximum in the range 2obs 0.25 0.5 meV. No temperature-dependent changes were observed in any of the linewidths near the transition temperature. This null result is consistent with a low electronic density of states at the Fermi surface, and an electron-phonon coupling parameter that is not unusually high compared with conventional superconductors. © 1990 The American Physical Society.

引用

页码：4272 / 4275

页数：4

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