A MODEL FOR THE THERMAL-CONDUCTIVITY OF YBA2CU3O7-DELTA

被引：9

作者：

DELAP, MR

BERNHOEFT, NR

机构：

[1] Department of Physics, University of Durham, Durham, DH1 3LE, South Road

来源：

PHYSICA C | 1992年 / 195卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90354-F

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thermal conductivity measurements have been performed upon a sample of YBa2Cu3O7-delta which has been subject to a series of heat treatments in order to remove oxygen from the material. The measurements show a strong correlation between oxygen content and the thermal conductivity of YBa2Cu3O7-delta; a reduction of the oxygen content results in a substantial lowering of the thermal conductivity over the measured temperature interval. A model has been constructed which demonstrates that changes in phonon lifetimes associated with the transition between the electrical insulating and metallic states cannot account for the behaviour of YBa2Cu3O6 and YBa2Cu3O7. The model suggests that there must be a significant extra contribution to the thermal conductivity in both the normal and superconducting samples.

引用

页码：301 / 306

页数：6

共 13 条

[1]

Anderson P. W., 1984, BASIC NOTIONS CONDEN, DOI 10.4324/9780429494116

[2] INTERATOMIC POTENTIAL, PHONON-SPECTRUM, AND MOLECULAR-DYNAMICS SIMULATION UP TO 1300-K IN YBA2CU3O7-DELTA [J].

CHAPLOT, SL .

PHYSICAL REVIEW B, 1990, 42 (04) :2149-2154

[3] PHONON-DISPERSION RELATION IN YBA2CU3O7 [J].

CHAPLOT, SL .

PHYSICAL REVIEW B, 1988, 37 (13) :7435-7442

[4]

Franz R., 1853, ANN PHYS-NEW YORK, V165, P497, DOI DOI 10.1002/ANDP.18531650802

[5] OXYGEN ORDERING AND THE ORTHORHOMBIC-TO-TETRAGONAL PHASE-TRANSITION IN YBA2CU3O7-X [J].

JORGENSEN, JD ;

BENO, MA ;

HINKS, DG ;

SODERHOLM, L ;

VOLIN, KJ ;

HITTERMAN, RL ;

GRACE, JD ;

SCHULLER, IK ;

SEGRE, CU ;

ZHANG, K ;

KLEEFISCH, MS .

PHYSICAL REVIEW B, 1987, 36 (07) :3608-3616

[6] THE SCATTERING OF LOW-FREQUENCY LATTICE WAVES BY STATIC IMPERFECTIONS [J].

KLEMENS, PG .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION A, 1955, 68 (12) :1113-1128

[7]

Klemens PG., 1969, THERMAL CONDUCTIVITY, V1, P1

[8]

MOTT NF, 1990, SUPERCOND SCI TECH, V4, pS59

[9] LATTICE-DYNAMICS OF 123 SUPERCONDUCTORS [J].

REICHARDT, W ;

EWERT, D ;

GERING, E ;

GOMPF, F ;

PINTSCHOVIUS, L ;

RENKER, B ;

COLLIN, G ;

DIANOUX, AJ ;

MUTKA, H .

PHYSICA B, 1989, 156 :897-901

[10] PHONON DENSITY-OF-STATES FOR HIGH-TC (Y, RE)BA2CU3O7 SUPERCONDUCTORS AND NON-SUPERCONDUCTING REFERENCE SYSTEMS [J].

RENKER, B ;

GOMPF, F ;

GERING, E ;

ROTH, G ;

REICHARDT, W ;

EWERT, D ;

RIETSCHEL, H ;

MUTKA, H .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1988, 71 (04) :437-442

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