Mott Transition vs Multicritical Phenomenon of Superconductivity and Antiferromagnetism -- Application to κ-(BEDT-TTF)2X --
Shigeki Onoda, Naoto Nagaosa
Abstract
Interplay between the Mott transition and the multicritical phenomenon of d-wave superconductivity (SC) and antiferromagnetism (AF) is studied theoretically. We describe the Mott transition, which is analogous to a liquid-gas phase transition, in terms of an Ising-type order parameter η. We reveal possible mean-field phase diagrams produced by this interplay. Renormalization group analysis up to one-loop order gives flows of coupling constants, which in most cases lead to fluctuation-induced first-order phase transitions even when the SO(5) symmetry exists betwen the SC and AF. Behaviors of various physical quantities around the Mott critical point are predicted. Experiments in κ-(BEDT-TTF)2X are discussed from this viewpoint.
Create a lesson
Related papers
SrMn2Ge2: A metallic system with anomalous magnetotransport properties
A. van der Spuy, R. Warmbier, A. M. Strydom et al.
Hidden Triakontadipole Order in the Triangular-Lattice Magnet CeMgAl11O19
Yu-Bo Liu, Yuan Gao, Zhen Ma et al.
Closed- and open-system characterization of the Yukawa-SYK model in real time
Alex Windey, Christian H. Johansen, Philipp Hauke et al.
Small-data physics-informed ML model for magnetic exchange based on chemical composition and structure
Brice Kengni Zanguim, Thibaut Véry, Marie-Bernadette Lepetit
Thermodynamic Evidence for Multiple Field-Induced Phases in an Anisotropic Kagome Antiferromagnet
M. Schuchard, Q. Barthélemy, C. Marcenat et al.
Spin-orbit-locked symmetry and the stability of the triangular Dirac spin liquid in the ytterbium delafossites
Yasir Iqbal