THERMAL-CONDUCTIVITY OF YBA2CU3O7 FROM 7K TO 260K

被引：13

作者：

RAVINDRAN, TR ^{[1
]}

SANKARANARAYANAN, V ^{[1
]}

SRINIVASAN, R ^{[1
]}

机构：

[1] INTERUNIV CONSORTIUM DAE FACIL,INDORE 452001,INDIA

来源：

PRAMANA-JOURNAL OF PHYSICS | 1992年 / 39卷 / 02期

关键词：

THERMAL CONDUCTIVITY; YBCO; 3-PHONON PROCESSES;

D O I：

10.1007/BF02857500

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Thermal conductivity of YBa2Cu3O7 has been measured on samples of a few mm thickness. Above T(c) thermal conductivity is found to decrease with increase in temperature, pointing towards a contribution to thermal resistivity from three-phonon Umklapp processes. Below T(c) thermal conductivity increases rapidly before reaching a maximum at about 50 K and then falls towards zero at lower temperatures. The experimental set up is described and results discussed.

引用

页码：109 / 116

页数：8

共 11 条

[1] THEORY OF THE THERMAL CONDUCTIVITY OF SUPERCONDUCTORS [J].

BARDEEN, J ;

RICKAYZEN, G ;

TEWORDT, L .

PHYSICAL REVIEW, 1959, 113 (04) :982-994

[2] LATTICE THERMAL-CONDUCTIVITY OF YBA2CU3O7-DELTA [J].

COHN, JL ;

WOLF, SA ;

VANDERAH, TA ;

SELVAMANICKAM, V ;

SALAMA, K .

PHYSICA C, 1992, 192 (3-4) :435-442

[3] TRANSPORT-PROPERTIES OF YBA2CU3O7 - RESISTIVITY, THERMAL-CONDUCTIVITY, THERMOPOWER AND HALL-EFFECT [J].

GOTTWICK, U ;

HELD, R ;

SPARN, G ;

STEGLICH, F ;

RIETSCHEL, H ;

EWERT, D ;

RENKER, B ;

BAUHOFER, W ;

VONMOLNAR, S ;

WILHELM, M ;

HOENIG, HE .

EUROPHYSICS LETTERS, 1987, 4 (10) :1183-1188

[4]

HE YS, 1987, J PHYS F MET PHYS, V17, P1243

[5]

MERISOV BA, 1989, SVERKHPROVODIMOST FI, V2, P19

[6]

RAO GVS, 1987, INT J MOD PHYS B, V1, P1097

[7]

REGUEIRO MDN, 1991, INT J MOD PHYS, P2003

[8]

SIEVERS AJ, 1964, 27111 CORN U MAT SCI

[9] THEORY OF THERMAL-CONDUCTIVITY OF THE LATTICE FOR HIGH-TC SUPERCONDUCTORS [J].

TEWORDT, L ;

WOLKHAUSEN, T .

SOLID STATE COMMUNICATIONS, 1989, 70 (08) :839-844

[10] THERMAL TRANSPORT-PROPERTIES OF YBA2CU3O7 SUPERCONDUCTORS [J].

UHER, C ;

KAISER, AB .

PHYSICAL REVIEW B, 1987, 36 (10) :5680-5683

← 1 2 →