Anisotropic transferred hyperfine interactions in Cs2CuCl4

被引：10

作者：

Vachon, M-A ^{[1
]}

Koutroulakis, G. ^{[1
]}

Mitrovic, V. F. ^{[1
]}

Reyes, A. P. ^{[2
]}

Kuhns, P. ^{[2
]}

Coldea, R. ^{[3
]}

Tylczynski, Z. ^{[4
]}

机构：

[1] Brown Univ, Dept Phys, Providence, RI 02912 USA

[2] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[3] Univ Bristol, Dept Phys, Bristol BS8 1TL, Avon, England

[4] Adam Mickiewicz Univ Poznan, Inst Phys, PL-61614 Poznan, Poland

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 29期

关键词：

D O I：

10.1088/0953-8984/20/29/295225

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report Cs-133 nuclear magnetic resonance (NMR) measurements of magnetic insulator Cs2CuCl4 in the paramagnetic phase (T >= 4.2 K) as a function of the orientation of an applied magnetic field with respect to the principal crystalline axes. The magnetic shift tensor is determined. It is found that its principal axes do not coincide with the principal axes of the crystal. The Cu-Cs dipolar interaction tensor is calculated as well. From these, we deduce the full transferred hyperfine tensor for the two inequivalent Cs sites of the unit cell. We find that the tensors are anisotropic, containing non-zero off-diagonal terms, and that the transferred hyperfine coupling between Cu electronic spins and Cs nuclei dominates the NMR shift on both Cs sites.

引用

页数：8

共 11 条

[1]

BAILLEUL S, 1994, EUR J SOL STATE INOR, V31, P431

[2] Extended scattering continua characteristic of spin fractionalization in the two-dimensional frustrated quantum magnet Cs2CuCl4 observed by neutron scattering -: art. no. 134424 [J].