Specific heat study of SrCu2(BO3)2

被引：20
|
作者：
Kageyama, H [1 ]
Suzuki, H [1 ]
Nohara, M [1 ]
Onizuka, K [1 ]
Takagi, H [1 ]
Ueda, Y [1 ]
机构：
[1] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan
来源：
PHYSICA B | 2000年 / 281卷 / 281期
关键词：
SrCu2(BO3)(2); exactly solvable model; specific heat; spin gap;
D O I：
10.1016/S0921-4526(99)00831-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The specific heat measurement of a two-dimensional spin-gap material SrCu2(BO3)(2) with an exact dimer ground state was performed in Various magnetic fields up to 12 T. Based on an isolated dimer model, we estimated the spin-gap size at zero field to be 35.0 K. The value of the spin gap decreases in proportion to the applied magnetic field, due to the Zeeman splitting of the excited triplet levels. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：667 / 668
页数：2
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