KONDO INSULATORS - ARE SIMPLE THEORIES GOOD ENOUGH

被引：15

作者：

DONIACH, S

FU, C

TRUGMAN, SA

机构：

[1] STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305

[2] LOS ALAMOS NATL LAB,DIV THEORY,LOS ALAMOS,NM 87545

来源：

PHYSICA B | 1994年 / 199卷

关键词：

D O I：

10.1016/0921-4526(94)91866-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We briefly summarize the basic concepts behind the terms ''Kondo insulator''. We point out the importance of including band structure effects in calculating excitation spectra. A discussion of a mid-gap impurity band induced by dopants leads to the suggestion of a low-temperature magnetic phase caused by departure from stoichiometry in samples of CeNiSn. This could provide an explanation for the 1/T1 is-proportional-to T3 behavior observed in NMR for this material.

引用

收藏

页码：450 / 453

页数：4

相关论文

共 18 条

[1] MAGNETISM IN DOPED KONDO INSULATORS [J].

DONIACH, S ;

FAZEKAS, P .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1992, 65 (06) :1171-1183

[2]

DONIACH S, 1974, ACTINIDES, P51

[3] MAGNETIC AND NONMAGNETIC GROUND-STATES OF THE KONDO LATTICE [J].

FAZEKAS, P ;

MULLERHARTMANN, E .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 85 (02) :285-300

[4] VARIATIONAL THEORY OF CORRELATED FERMI-LIQUID STATE IN THE KONDO LATTICE MODEL [J].

FAZEKAS, P ;

SHIBA, H .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1991, 5 (1-2) :289-308

[5]

FU CL, IN PRESS

[6] EVIDENCE FOR A COHERENCE GAP IN CE3BI4PT3 [J].

HUNDLEY, MF ;

CANFIELD, PC ;

THOMPSON, JD ;

FISK, Z ;

LAWRENCE, JM .

PHYSICA B, 1991, 171 (1-4) :254-257

[7] POSSIBLE ORIGINS FOR ANOMALIES IN CENISN [J].

KASUYA, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1992, 61 (06) :1863-1866

[8] MAGNETIC INSTABILITY OF THE GAP STATE IN CENISN AT VERY LOW-TEMPERATURE [J].

KYOGAKU, M ;

KITAOKA, Y ;

ASAYAMA, K ;

TAKABATAKE, T ;

FUJII, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1992, 61 (01) :43-46

[9] FERMI-SURFACE SUM-RULE AND ITS CONSEQUENCES FOR PERIODIC KONDO AND MIXED-VALENCE SYSTEMS [J].

MARTIN, RM .

PHYSICAL REVIEW LETTERS, 1982, 48 (05) :362-365

[10] SPIN GAP AND ANTIFERROMAGNETIC CORRELATIONS IN THE KONDO INSULATOR CENISN [J].

MASON, TE ;

AEPPLI, G ;

RAMIREZ, AP ;

CLAUSEN, KN ;

BROHOLM, C ;

STUCHELI, N ;

BUCHER, E ;

PALSTRA, TTM .

PHYSICAL REVIEW LETTERS, 1992, 69 (03) :490-493