Superconductivity-induced anomalies in the spin excitation spectra of underdoped YBa2Cu3O6+x

被引：159

作者：

Fong, HF

Keimer, B

Milius, DL

Aksay, IA

机构：

[1] BROOKHAVEN NATL LAB,UPTON,NY 11973

[2] PRINCETON UNIV,DEPT CHEM ENGN,PRINCETON,NJ 08544

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.78.713

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Polarized and unpolarized neutron scattering have been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa2Cu3O6.5 (T-c = 52 K) and YBa2Cu3O6.7 (T-c = 67 K); Pronounced enhancements of the spectral weight centered around 25 and 33 meV, respectively; are observed below T-c in both crystals, compensated predominantly by a loss of spectral weight at higher energies. The data provide important clues to the origin of the 40 meV magnetic resonance peak in YBa2Cu3O7.

引用

页码：713 / 716

页数：4

共 33 条

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