Off-diagonal Seebeck effect and anisotropic thermopower in Bi2Sr2CaCu2O8 thin films

被引：34

作者：

Zahner, T ^{[1
]}

Schreiner, R

Stierstorfer, R

Kus, O

Li, ST

Roessler, R

Pedarnig, JD

Bauerle, D

Lengfellner, H

机构：

[1] Univ Marburg, Inst Expt & Angew Phys, D-93040 Regensburg, Germany

[2] Johannes Kepler Univ, Inst Angew Phys, A-4040 Linz, Austria

来源：

EUROPHYSICS LETTERS | 1997年 / 40卷 / 06期

关键词：

D O I：

10.1209/epl/i1997-00521-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The anisotropy Delta S of the thermopower in thin films of the high-T-c superconductor Bi2Sr2CaCu2O8 is investigated using off-c-axis epitaxial film growth and the off-diagonal Seebeck effect. The measurements represent a new method for the investigation of anisotropic transport properties in solids, taking advantage of the availability of oriented grown crystalline thin films instead of using bulk crystals. First results for the temperature dependence Delta S(T) in Bi2Sr2CaCu2O8 thin films are presented and described within a two-band model. Subjecting the films to heat treatments in different gases at relatively low temperatures, Delta S could reversibly be changed in a wide range.

引用

页码：673 / 678

页数：6

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