Universal Fermi-surface anisotropy renormalization for interacting Dirac fermions with long-range interactions.

ABSTRACT: Recent experimental [I. Jo et al, Phys. Rev. Lett. 119, 016402 (2017)] and numerical [M. Ippoliti, S. D. Geraedts, R. N. Bhatt, Phys. Rev. B 95, 201104 (2017)] evidence suggests an intriguing universal relationship between the Fermi surface anisotropy of the noninteracting parent 2-dimensional (2D) electron gas and the strongly correlated composite Fermi liquid formed in a strong magnetic field close to half-filling. Inspired by these observations, we explore more generally the question of anisotropy renormalization in interacting 2D Fermi systems. Using a recently developed [H. -K. Tang et al, Science 361, 570 (2018)] nonperturbative and numerically exact projective quantum Monte Carlo simulation as well as other numerical and analytic techniques, only for Dirac fermions with long-range C

SUBMITTER: Leaw JN 

PROVIDER: S-EPMC6936362 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature