期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2017
卷号：114
期号：24
页码：6250-6255
DOI：10.1073/pnas.1703172114
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：We propose a phenomenological framework for three classes of Kondo lattice materials that incorporates the interplay between the fluctuations associated with the antiferromagnetic quantum critical point and those produced by the hybridization quantum critical point that marks the end of local moment behavior. We show that these fluctuations give rise to two distinct regions of quantum critical scaling: Hybridization fluctuations are responsible for the logarithmic scaling in the density of states of the heavy electron Kondo liquid that emerges below the coherence temperature T ∗ , whereas the unconventional power law scaling in the resistivity that emerges at lower temperatures below T Q C may reflect the combined effects of hybridization and antiferromagnetic quantum critical fluctuations. Our framework is supported by experimental measurements on CeCoIn5, CeRhIn5, and other heavy electron materials.
关键词：quantum critical behavior ; heavy electron ; hybridization fluctuations ; two fluid
