Tunneling spectroscopy of the Kondo semiconductor Ce3Bi4Pt3

被引：9

作者：

Ekino, T ^{[1
]}

Umeda, H

Katoh, K

Takabatake, T

Fujii, H

机构：

[1] Hiroshima Univ, Fac Integrated Arts & Sci, Higashihiroshima 739, Japan

[2] Hiroshima Univ, Fac Sci, Higashihiroshima 739, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷

关键词：

Kondo insulator; energy gap; tunneling;

D O I：

10.1016/S0304-8853(97)00412-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of the energy gap in Ce3Bi4Pt3 have been carried out using break junctions. Observed gap magnitude of 2 Delta(p-p) (4.2 K) = 85 +/- 18 meV is much larger than the transport gap. The ratio 2 Delta(p-p)/k(B)T(chi) approximate to 13 +/- 2 with T-chi approximate to 80 K (the temperature of the susceptibility maximum) agrees with that of CeNiSn and CeRhSb, thereby indicating that the origin of the gap formation is common to these compounds. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：379 / 380

页数：2

共 5 条

[1] KONDO COUPLING INDUCED CHARGE GAP IN CE3BI4PT3 [J].

BUCHER, B ;

SCHLESINGER, Z ;

CANFIELD, PC ;

FISK, Z .

PHYSICAL REVIEW LETTERS, 1994, 72 (04) :522-525

[2] TUNNELING EVIDENCE FOR THE QUASI-PARTICLE GAP IN KONDO SEMICONDUCTORS CENISN AND CERHSB [J].

EKINO, T ;

TAKABATAKE, T ;

TANAKA, H ;

FUJII, H .

PHYSICAL REVIEW LETTERS, 1995, 75 (23) :4262-4265

[3] ELECTRON-TUNNELING STUDY OF NBSE3 [J].

EKINO, T ;

AKIMITSU, J .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1987, 26 :625-626

[4] HYBRIDIZATION GAP IN CE3BI4PT3 [J].

HUNDLEY, MF ;

CANFIELD, PC ;

THOMPSON, JD ;

FISK, Z ;

LAWRENCE, JM .

PHYSICAL REVIEW B, 1990, 42 (10) :6842-6845

[5]

SERVERING A, 1991, PHYS REV B, V44, P6832

← 1 →