Charge instabilities at the metamagnetic transition of itinerant electron systems

2005/02/16 by Carsten Honerkamp
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.72.115103

published as Phys. Rev. B 72, 115103 (2005) · 4 pages, 2 figures

arxiv created 2005/02/16 · openalex publication_date 2005/09/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We investigate instabilities in the charge channel in the vicinity of (meta)magnetic transitions of itinerant electron systems. Based on a weak-coupling analysis we argue that in a one-band t\text\ensuremath-t^\ensuremath' Hubbard model near the van Hove filling and dominant ferromagnetic fluctuations it is difficult to account for a microscopic mechanism for a d-wave Pomeranchuk deformation of the Fermi surface. A similar deformation has been considered for the metamagnetic transition in Sr₃Ru₂O₇. As an alternative we discuss the possibility of charge inhomogeneity on the nanoscale. This extends the analogy of the metamagnetic transition to a liquid-gas transition.

Citations

• Reserva de accion civil: formulación fuera de tiempo
• Formation of an electronic nematic phase in interacting fermion systems

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