HEAT-CAPACITY OF THE SPIN-PEIERLS COMPOUND CUGEO3

被引：44

作者：

SAHLING, S

LASJAUNIAS, JC

MONCEAU, P

REVCOLEVSCHI, A

机构：

[1] TECH UNIV DRESDEN,INST TIEFTEMP PHYS,D-01062 DRESDEN,GERMANY

[2] UNIV PARIS 11,CHIM SOLIDE LAB,F-91405 ORSAY,FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 92卷 / 05期

关键词：

A MAGNETICALLY ORDERED MATERIALS; D HEAT CAPACITY; PHASE TRANSITION; PHONONS;

D O I：

10.1016/0038-1098(94)90521-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on heat capacity measurements in the temperature range between 40 mK and 35 K of a single crystal of the spin-Peierls compound CuGeO3. It exhibits a sharp anomaly at T-C = 14.2K corresponding to a second order phase transition with strong critical fluctuations. Below 6K analysis of data is compatible with an exponential decay of the magnetic contribution: the corresponding energy gap agrees with the B.C.S. theory.

引用

页码：423 / 426

页数：4

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