Coexistence of superconductivity and ferromagnetism in ferromagnetic metals
Coexistence of superconductivity and ferromagnetism in ferromagnetic metals
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发表时间：
1999-11
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通讯作者：
N. Karchev;N. Karchev;K. Blagoev;K. Bedell;Peter B. Littlewood
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作者：
N. Karchev;N. Karchev;K. Blagoev;K. Bedell;Peter B. Littlewood
本文讨论了高温超导体RuSr 2 GdCu 2 O 8-δ中超导性和铁磁性共存的问题。本文用场论方法研究了一个铁磁超导体的单费米子有效模型，其中产生铁磁性的准粒子也形成了库珀对。我们讨论了这个模型和标准BCS模型中不同的物理特征，并考虑了它们的实验结果。
In this paper we address the question of coexistence of superconductivity and ferromagnetism in the high temperature superconductor RuSr$_2$GdCu$_2$O$_{8-\delta}$. Using a field theoretical approach we study a one-fermion effective model of a ferromagnetic superconductor in which the quasiparticles responsible for the ferromagnetism form the Cooper pairs as well. We discuss the physical features which are different in this model and the standard BCS model and consider their experimental consequences.