Local criticality close to a quantum Lifshitz point

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:272

Article; Proceedings Paper

Continentino, MA

关键词: heavy fermions;    quantum Lifshitz points;   

DOI  :  10.1016/j.jmmm.2003.11.097

来源: Elsevier

【 摘 要 】

Near quantum Lifshitz points the stiffness of the lifetime of the spin fluctuations is very small. This gives rise to a regime where the critical fluctuations are local in space but extended along the time directions. The Fermi liquid properties in this local quantum regime is governed by a single energy scale, the coherence temperature. These results are relevant for heavy fermions and frustrated systems whenever there is a competition between different instabilities in q-space. (C) 2004 Elsevier B.V. All rights reserved.

【 授权许可】

Free