CRITICAL FIELDS, PAULI PARAMAGNETIC LIMITING, AND MATERIAL PARAMETERS OF NB3SN AND V3SI
CRITICAL FIELDS, PAULI PARAMAGNETIC LIMITING, AND MATERIAL PARAMETERS OF NB3SN AND V3SI
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DOI：
10.1103/physrevb.19.4545
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发表时间：
1979-01-01
影响因子：
3.7
通讯作者：
BEASLEY, MR
中科院分区：
文献类型：
--
作者：
ORLANDO, TP;MCNIFF, EJ;BEASLEY, MR
研究了Nb3Sn和V3Si的上临界场行为与剩余电阻率的关系。结果在Ginzburg-Landau-Abrikosov-Gor‘kov第二类超导理论的框架下进行了分析，其中包括电子-声子相互作用的影响。强调了电子-声子相互作用对Pauli顺磁限制过程的重要性，发现需要包含电子-声子修正(最重要的是正常态参数的电子-声子重整化)才能合理地拟合数据。对于Nb3Sn，如果不考虑这些影响，则会导致太高的自旋-轨道散射率。临界场数据也被用来确定这些材料的态密度以及其他几个超导和正常态参数。
The upper-critical-field behavior of Nb 3 Sn and V 3 Si is studied as a function of residual resistivity. The results are analyzed in the framework of the Ginzburg-Landau-Abrikosov-Gor'kov theory of type-II superconductivity including the effects of the electron-phonon interaction. The importance of the electron-phonon interaction on the Pauli paramagnetic limiting process is stressed and it is found that inclusion of the electron-phonon corrections (most importantly the electron-phonon renormalization of the normal-state parameters) is needed to sensibly fit the data. For Nb 3 Sn failure to include these effects leads to too high spin-orbit scattering rates. The critical-field data are also used to determine the density of states of these materials as well as several other superconducting and normal-state parameters.