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.
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页码：39 / +
页数：2
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