Field-driven transitions in the dipolar pyrochlore antiferromagnet Gd2Ti2O7 -: art. no. 184402

被引：24

作者：

Cépas, O ^{[1
]}

Shastry, BS

机构：

[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

[2] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.69.184402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a mean-field theory for magnetic-field-driven transitions in dipolar coupled gadolinium titanate Gd2Ti2O7 pyrochlore system. Low-temperature neutron scattering yields a phase that can be regarded as a eight sublattice antiferromagnet, in which long-ranged ordered moments and fluctuating moments coexist. Our theory gives parameter regions where such a phase is realized, and predicts several other phases, with transitions amongst them driven by magnetic field as well as temperature. We find several instances of local disorder parameters describing the transitions.

引用

页码：184402 / 1

页数：5

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