The large |U| expansion for a half-filled asymmetric Hubbard model on a triangular ladder in the presence of spin-dependent magnetic flux
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/add975
Abstract: We consider a half-filled system of spin-1/2 fermions on a triangular ladder with spin-dependent hopping in the presence of spin-dependent flux. Using the Schrieffer–Wolff transformation, we derive an effective spin Hamiltonian describing the infrared properties… read more here.
Keywords: spin dependent; half filled; triangular ladder; presence ... See more keywords
Dipole representation of half-filled Landau level
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review B"
DOI: 10.1103/physrevb.107.155132
Abstract: We introduce a variant of dipole representation for composite fermions in a half-filled Landau level, taking into account the symmetry under exchange of particles and holes. This is implemented by a special constraint on composite… read more here.
Keywords: dipole representation; filled landau; level; landau level ... See more keywords
Identifying the topological order of quantized half-filled Landau levels through their daughter states
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.110.245140
Abstract: Fractional quantum Hall states at a half-filled Landau level are believed to carry an integer number $\mathcal{C}$ of chiral Majorana edge modes, reflected in their thermal Hall conductivity. We show that this number determines the… read more here.
Keywords: filled landau; half; half filled; quantum hall ... See more keywords
Temperature dependence of charge transport in the half-filled one-dimensional Hubbard model
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.110.l201108
Abstract: The use of hydrodynamic transport theory seems to indicate that the charge diffusion constant D of the one-dimensional (1D) half-filled Hubbard model, whose Drude weight vanishes, diverges for temperature T>0, which would imply anomalous superdiffusive… read more here.
Keywords: temperature; half filled; one dimensional; charge transport ... See more keywords
Thermopower and Nernst measurements in a half-filled lowest Landau level
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.245425
Abstract: Motivated by recent proposal by Potter et al. [Phys. Rev. X 6, 031026 (2016)] concerning possible thermoelectric signatures of Dirac composite fermions, we perform a systematic experimental study of thermoelectric transport of an ultrahigh-mobility GaAs/AlxGa1-xAs… read more here.
Keywords: half filled; thermopower; thermopower nernst; nernst measurements ... See more keywords
Minimal Fractional Topological Insulator in Half-Filled Conjugate Moiré Chern Bands
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review X"
DOI: 10.1103/physrevx.15.021063
Abstract: We propose a “minimal” fractional topological insulator (mFTI), motivated by the recent experimental report on the fractional quantum spin-Hall effect in a transition metal dichalcogenide moiré system. The observed effect suggests the possibility of a… read more here.
Keywords: half filled; mfti; chern bands; minimal fractional ... See more keywords
Symmetry Breaking States in the Half-Filled Two-Orbital Hubbard Model with Crystalline Electric Field
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the Physical Society of Japan"
DOI: 10.7566/jpsj.88.024702
Abstract: We investigate the half-filled two-orbital Hubbard model with the crystalline electric field using dynamical mean-field theory combined with the continuous-time quantum Monte Carlo simulations. We systematically study how the interplay of the intra- and interorbital… read more here.
Keywords: field; hubbard model; half filled; hubbard ... See more keywords