GAP-LIKE MAGNETIC EXCITATION IN THE NEUTRON-SCATTERING RESPONSE OF CE3BI4PT3

被引：7

作者：

SEVERING, A

THOMPSON, JD

CANFIELD, PC

FISK, Z

RISEBOROUGH, P

机构：

[1] UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545

[2] POLYTECH INST NEW YORK,BROOKLYN,NY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1992年 / 181卷

关键词：

D O I：

10.1016/0925-8388(92)90314-Y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ce3Bi4Pt3 is a mixed valence compound with a gap in its electronic excitation spectrum. An Arrhenius plot of resistivity gives rho-exp(- DELTA/T), where DELTA almost-equal-to 5 meV. Inelastic neutron scattering experiments on Ce3Bi4Pt3 and also the isostructural lanthanium analogue reveal a gap in the spin-spin correlation function of Ce3Bi4Pt3. At low temperatures the magnetic gap DELTA(m) = 12 meV. Above 50 K the gap fills, becoming indiscernible at 150 K.

引用

页码：211 / 217

页数：7

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