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物理学报. 1989, 38(3): 511-515.
doi: 10.7498/aps.38.511.
四方和正交YBa2Cu3O7-x体系的输运性质
- 收稿日期: 1988-03-15
- 刊出日期: 2005-07-08
摘要: 测量了一系列在不同淬火温度下制得的单相YBa2Cu3O7-x样品的电阻和热电势率。热电势率与温度的关系表明,在正交结构的超导体中,存在声子曳引峰,而在四方结构的样品中,声子曳引峰消失,说明电-声子相互作用对超导电性有影响。根据热电势率数据,估算了样品的费密能和载流子浓度。
English Abstract
TRANSPORT PROPERTIES OF TETRAGONAL AND ORTHOR- HOMBIC PHASE IN YBa2Cu3O7-x SYSTEM
- Received Date:
15 March 1988
- Published Online:
08 July 2005
Abstract: The resistance and thermoelectric power were measured for a series of single phase YBa2 Cu3O7-x samples with different quenching temperature. The relation between the thermopower and temperature indicates that there exists a phonon-drag peak in orthorhombic phase sample. The peak disappears in tetragonal phase sample. This phenomeron suggests that the electron-phonon interaction influences the superconduc tivity of YBa2 Cu3O7-x. According to the experimental data of thermoelectric power, estimation for the Fermi energy and carrier concentration of the sample are made.
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