Evidence for magnetic pseudoscaling in overdoped La2-xSrxCuO4

被引：18

作者：

Naeini, JG ^{[1
]}

Chen, XK

Hewitt, KC

Irwin, JC

Devereaux, TP

Okuya, M

Kimura, T

Kishio, K

机构：

[1] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[2] George Washington Univ, Dept Phys, Washington, DC 20052 USA

[3] Univ Tokyo, Dept Superconduct, Bunkyo Ku, Tokyo 113, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.57.R11077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the results of electronic Raman-scattering experiments on an overdoped La1.78Sr0.22CuO4 single crystal as a function of temperature. The scattering rate Gamma(Omega-->0,T) has been determined from the normal state B-1g spectra in the range 50 less than or equal to T less than or equal to 300 K. T(T) decreases linearly from 300 K to about 175 K and then undergoes a reduction with respect to the expected mean-field behavior. This trend suggests a crossover to a magnetic pseudoscaling regime at T(cr)similar or equal to 160 K. The results are in good agreement with the prediction of the nearly antiferromagnetic Fermi-liquid model. There is no evidence of a pseudogap in the spectra obtained from this overdoped sample.

引用

页码：R11077 / R11080

页数：4

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