塞曼效应对正常金属/d波超导结中微分电导的影响  

Zeeman Effects on the differential conductance in normal-metal/d-wave superconductor tunnel junctions

作　　者：金本喜[1] 付浩[1] 董正超[1] 

机构地区：[1]淮阴师范学院物理系,淮安223001

出　　处：《低温与超导》2005年第4期56-59,共4页Cryogenics and Superconductivity

摘　　要：通过外加塞曼磁场在d波超导中,研究磁场对d波超导及其正常金属/d波超导结中隧道谱的影响。研究表明(1)塞曼磁场能使能隙变小,且随着磁场变大,超导态会变为正常态,产生一级相变;(2)塞曼磁场可导致零偏压电导峰劈裂,劈裂宽度为2h0(h0为塞曼能)。We study the Zeeman effect on the d-wave superconductor and tunneling spectrum in normal-metal/d- wave superconductor junctions applied by a Zeeman magnetic field on the superconductor. It is shown that： （1） the Zeeman magnetic field can lead to a decrease in superconductor gap, and the superconducting state being changed into the normal state, exhibiting a first-order phase transition; （2） the Zeeman magnetic field may make the zero-bias conductance peak split into two peaks, the energy difference between the two splitting peaks in the conductance spectrum is equal to 2ho. （ho is the Zeeman energy）.

关 键 词：塞曼效应 d 波超导 微分电导 D波超导 超导结 金属 磁场能 一级相变 隧道谱 

分 类 号：O562.32[理学—原子与分子物理] O511[理学—物理]