考虑到d 波超导表面时间反演对称态的破缺与粗糙散射效应,在Blonder- Tinkham -Klapw ijk(BTK)理论框架下,通过求解Bogoliubov- de Gennes(BdG)方程,计算正常金属- d 波超导隧道结中的准粒子输运系数、隧道谱和束缚态密度。研究表明:(1...考虑到d 波超导表面时间反演对称态的破缺与粗糙散射效应,在Blonder- Tinkham -Klapw ijk(BTK)理论框架下,通过求解Bogoliubov- de Gennes(BdG)方程,计算正常金属- d 波超导隧道结中的准粒子输运系数、隧道谱和束缚态密度。研究表明:(1)d 波超导表面时间反演对称态的破缺会导致零偏压电导峰位移,位移的程度取决于分解d 波超导表面时间反演对称态中S波分量的强度;(2)粗糙界面散射不仅可压低零偏压电导峰,还会阻碍零偏压电导峰的位移。所得的这些结果能很好地解释目前有关高TC展开更多
Solving the Bogoliubov-de Gennes equation, the energy levels of bound statesare obtained in the ferromagnetic superconductor. The Josephson currents in a ferromagneticsuperconductor/Insulator/d-wave superconductor jun...Solving the Bogoliubov-de Gennes equation, the energy levels of bound statesare obtained in the ferromagnetic superconductor. The Josephson currents in a ferromagneticsuperconductor/Insulator/d-wave superconductor junction are calculated as a function of the exchangefield, temperature, and insulating barrier strength. It is found that the Josephson criticalcurrent is always suppressed by the presence of exchange Geld h and depends on crystalline axisorientation of d-wave superconductor.展开更多
文摘Solving the Bogoliubov-de Gennes equation, the energy levels of bound statesare obtained in the ferromagnetic superconductor. The Josephson currents in a ferromagneticsuperconductor/Insulator/d-wave superconductor junction are calculated as a function of the exchangefield, temperature, and insulating barrier strength. It is found that the Josephson criticalcurrent is always suppressed by the presence of exchange Geld h and depends on crystalline axisorientation of d-wave superconductor.
