Elementary excitations in S=1/2 Heisenberg spin chains with alternating g-tensor and the Dzyaloshinskii-Moriya interaction

被引：2

作者：

Zvyagin, S. A. ^{[1
]}

Wosnitza, J. ^{[1
]}

Kolezhuk, A. K. ^{[2
]}

Krzystek, J. ^{[3
]}

Feyerherm, R. ^{[4
]}

机构：

[1] Forschungszentrum Rossendorf EV, Dresden High Magnet Field Lab, D-01314 Dresden, Germany

[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[3] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[4] Hahn Meitner Inst HMI, D-14109 Berlin, Germany

来源：

YAMADA CONFERENCE LX ON RESEARCH IN HIGH MAGNETIC FIELDS | 2006年 / 51卷

关键词：

D O I：

10.1088/1742-6596/51/1/006

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic-excitation spectrum of copper pyrimidine dinitrate, a material containing S = 1/2 antiferromagnetic chains with alternating g-tensor and the Dzyaloshinskii-Moriya interaction, and exhibiting a field-induced spin gap, is probed using tunable-frequency electron spin resonance spectroscopy in magnetic fields up to 25 T. The data are interpreted in frame of the sine-Gordon quantum-field theoretical concept proposed recently by Oshikawa and Affleck. The field-induced gap is measured directly; signatures of soliton and three breather branches are identified.

引用

页码：39 / +

页数：2

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