Magnetic order in lightly doped La2-xSrxCuO4 -: art. no. 027001

被引：37

作者：

Gozar, A ^{[1
]}

Dennis, BS

Blumberg, G

Komiya, S

Ando, Y

机构：

[1] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

[2] Univ Illinois, Urbana, IL 61801 USA

[3] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.93.027001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study long wavelength magnetic excitations in lightly doped La2-xSrxCuO4 (xless than or equal to0.03) detwinned crystals. The lowest energy magnetic anisotropy induced gap can be understood in terms of the antisymmetric spin interaction inside the antiferromagnetic (AF) phase. The second magnetic resonance, analyzed in terms of in-plane spin anisotropy, shows unconventional behavior within the AF state; it led to the discovery of collective spin excitations pertaining to a field induced magnetically ordered state. This state persists in a 9 T field to more than 100 K above the Neel temperature in x=0.01.

引用

页码：027001 / 1

页数：4

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