SYSTEMATIC THERMOPOWER BEHAVIOR IN SUPERCONDUCTORS

被引:7
作者
KAISER, AB [1 ]
SUBRAMANIAM, CK [1 ]
RUCK, B [1 ]
PARANTHAMAN, M [1 ]
机构
[1] OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831
关键词
D O I
10.1016/0379-6779(94)02960-7
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The in-plane thermopower of most of the cuprate superconductors (including the new Hg-based materials) shows a systematic pattern as the hole concentration is increased and conductivity increases, namely an approximately temperature-independent shift to more negative values. This pattern is intimately related to the value of T-c, and so possibly to the mechanism of the superconductivity. In the overdoped limit where T-c is reduced, the thermopower is often approximately proportional to temperature, as for conventional metallic diffusion thermopower, and as seen in fullerene superconductors. A remarkably similar pattern of thermopower shifts (but of smaller magnitude) is seen in NbN films. The similarity of cuprate and non-cuprate thermopower suggests a qualitatively similar mechanism.
引用
收藏
页码:1583 / 1584
页数:2
相关论文
共 13 条
[1]   2 MODELS FOR THE TRANSPORT-PROPERTIES OF YBA2CU3O7-DELTA IN ITS NORMAL STATE [J].
BARAD, S ;
FISHER, B ;
ASHKENAZI, J ;
GENOSSAR, J .
PHYSICA C, 1988, 156 (05) :741-749
[2]   ELECTRONIC-STRUCTURE OF ALKALI-METAL DOPED C-60 DERIVED FROM THERMOELECTRIC-POWER MEASUREMENTS [J].
INABE, T ;
OGATA, H ;
MARUYAMA, Y ;
ACHIBA, Y ;
SUZUKI, S ;
KIKUCHI, K ;
IKEMOTO, I .
PHYSICAL REVIEW LETTERS, 1992, 69 (26) :3797-3799
[3]  
Kaiser A. B., 1991, STUDIES HIGH TEMPERA, V7, P353
[4]   CONSISTENCY WITH ANOMALOUS ELECTRON-PHONON INTERACTIONS OF THE THERMOPOWER OF HIGH-TC SUPERCONDUCTORS [J].
KAISER, AB ;
MOUNTJOY, G .
PHYSICAL REVIEW B, 1991, 43 (07) :6266-6269
[5]   ELECTRON-PHONON INTERACTION AND THERMOPOWER NONLINEARITIES IN CHEVREL-PHASE COMPOUNDS [J].
KAISER, AB .
PHYSICAL REVIEW B, 1987, 35 (10) :4677-4681
[6]  
KAISER AB, 1994, AIP C P, V286, P115
[7]   POLARON MODELS OF HIGH-TEMPERATURE SUPERCONDUCTORS [J].
MOTT, NF .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (22) :3487-3506
[8]   ELECTRICAL TRANSPORT-PROPERTIES OF THE POTASSIUM DOPED BULK FULLERENE, KXC60 [J].
PARK, EB ;
SHIM, JW ;
PARK, H ;
PARK, YW ;
LEE, KB ;
KIM, HS ;
IQBAL, Z ;
BAUGHMAN, RH .
PHYSICA C, 1991, 185 :409-410
[9]   THERMOPOWER AND RESISTIVITY MEASUREMENTS ON OXYGEN-ANNEALED HGBA2CACU2O6+DELTA [J].
REN, YT ;
CLAYHOLD, J ;
CHEN, F ;
HUANG, ZJ ;
QIU, XD ;
SUN, YY ;
MENG, RL ;
XUE, YY ;
CHU, CW .
PHYSICA C, 1993, 217 (1-2) :6-10
[10]   TEST OF A BINARY MIXTURE MODEL FOR THE THERMOELECTRIC-POWER OF ION-BOMBARDED NBN-FILMS [J].
SIEBOLD, T ;
ZIEMANN, P .
SOLID STATE COMMUNICATIONS, 1993, 87 (04) :269-271