Field-induced staggered magnetization and magnetic ordering in Cu2(C5H12N2)2Cl4

被引：10

作者：

Clemancey, M.

Mayaffre, H.

Berthier, C.

Horvatic, M.

Fouet, J-B.

Miyahara, S.

Mila, F.

Chiari, B.

Piovesana, O.

机构：

[1] Univ Grenoble 1, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France

[2] CNRS, UMR5588, F-38402 St Martin Dheres, France

[3] CNRS, Grenoble High Magnet Field Lab, F-38042 Grenoble, France

[4] PPH Ecublens, Inst Romand Rech Numer Phys Mat, CH-1015 Lausanne, Switzerland

[5] Aoyama Gakuin Univ, Dept Math & Phys, Sagamihara, Kanagawa 2298558, Japan

[6] Ecole Polytech Fed Lausanne, Inst Theoret Phys, CH-1015 Lausanne, Switzerland

[7] Univ Perugia, Dipartimento Chim, I-06100 Perugia, Italy

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.167204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a D-2 NMR investigation of the gapped spin-1/2 compound Cu-2(C5H10N2D2)(2)Cl-4. Our measurements reveal the presence of a magnetic field-induced transverse staggered magnetization (TSM) which persists well below and above the field-induced 3D long-range magnetically ordered (FIMO) phase. The symmetry of this TSM is different from that of the TSM induced by the order parameter of the FIMO phase. Its origin, field dependence, and symmetry can be explained by an intradimer Dzyaloshinskii-Moriya interaction, as shown by DMRG calculations on a spin-1/2 ladder. This leads us to predict that the transition into the FIMO phase is not in the BEC universality class.

引用

页数：4

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