【摘 要】
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Heavy fermion (HF) compounds are prototypical strongly correlated electron systems and are prime examples to study quantum critical phenomena.The f electrons,which form local moments at high temperatures,can acquire itinerancy at low temperatures through
【机 构】
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Center for Correlated Matter and Department of Physics,Zhejiang University,Hangzhou 310058,China
【出 处】
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中国科学：物理学 力学 天文学（英文版）
论文部分内容阅读
Heavy fermion (HF) compounds are prototypical strongly correlated electron systems and are prime examples to study quantum critical phenomena.The f electrons,which form local moments at high temperatures,can acquire itinerancy at low temperatures through quantum-mechnical coupling with the conduction electrons,a process known as the Kondo effect.This many-body process can give rise to quasiparticle bands at the Fermi level (EF) with a very large effective mass(often ＞100me).The same spin-exchange coupling between conduction and f electrons can also lead to magnetically ordered states,which compete with the Kondo screening.
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