Infrared investigation of the broken-symmetry ground state in GeCuO3

被引：14

作者：

Musfeldt, JL

Wang, YJ

Jandl, S

Poirier, M

Revcolevschi, A

Dhalenne, G

机构：

[1] FLORIDA STATE UNIV,NATL HIGH MAGNET FIELD LAB,TALLAHASSEE,FL 32306

[2] UNIV SHERBROOKE,DEPT PHYS,CTR RECH PHYS SOLIDE,SHERBROOKE,PQ J1K 2R1,CANADA

[3] UNIV PARIS 11,LAB CHIM SOLIDES,F-91405 ORSAY,FRANCE

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.54.469

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report infrared transmission measurements of GeCuO3 single crystals as a function of applied magnetic field at temperatures above and below the 14 K spin-Peierls transition. in particular, interest has focused on the 311 cm(-1) feature, which seems to be either a magnetic excitation of the low-temperature broken-symmetry state or the result of a softened B-3u vibrational mode. Overall, our explorations of the various phase boundaries of the H-T phase diagram indicate most of the spin-lattice coupling is either very weak or takes place at lower energy scales than are probed in this experiment.

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页码：469 / 473

页数：5

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