Theory of spin-density profile and lattice distortion in the magnetization plateaus of SrCu2(BO3)2 -: art. no. 024401

被引：39

作者：

Miyahara, S ^{[1
]}

Becca, F

Mila, F

机构：

[1] Univ Lausanne, Inst Phys Theor, CH-1015 Lausanne, Switzerland

[2] INFM Democritos, Natl Simulat Ctr, I-34014 Trieste, Italy

[3] SISSA, I-34014 Trieste, Italy

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.68.024401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The two-dimensional spin-gap system SrCu2(BO3)(2) shows unique physical properties due to the low-dimensionality character and the strong quantum fluctuations. Experimentally, 1/8, 1/4, and 1/3 plateaus have been observed in the magnetization curve under magnetic fields up to 70 T, and the 1/2 plateau is expected to be stabilized at higher magnetic fields. We argue that spin-lattice effects are necessary to describe the spin density profile at the plateaus, and we propose a simple microscopic model of spins interacting adiabatically with the lattice to reproduce the main features of the recent experimental results by nuclear magnetic resonance.

引用

页数：10

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