Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Singh, Dheeraj Kumar"'
We study the phase diagram of Rashba-Hubbard model by employing the Hartree-Fock meanfield theory, and thereby establish the existence of an antiferromagnetically ordered Weyl semimetallic state with in-plane magnetic moments. This phase is found to
Externí odkaz:
http://arxiv.org/abs/2402.02131
Autor:
Rashid, Harun Al, Singh, Dheeraj Kumar
In the half-filled one-orbital Hubbard model on a square lattice, we study the effect of next-nearest neighbor hopping on the single-particle spectral function at finite temperature using an exact-diagonalization + Monte-Carlo based approach to the s
Externí odkaz:
http://arxiv.org/abs/2310.09730
Autor:
Singh, Dheeraj Kumar, Bang, Yunkyu
We examine charge correlations and instabilities in the pseudogap phase of high-$T_c$ cuprates modeled by $d$-density wave ordering. The latter has a gap symmetry similar to the one observed in the $d$-wave superconductor. We use $t$-$J$ model to des
Externí odkaz:
http://arxiv.org/abs/2310.09816
Autor:
Goyal, Garima, Singh, Dheeraj Kumar
We examine the possible existence of Dirac semimetal with magnetic order in a two-dimensional system with a nonsymmorphic symmetry by using the Hartree-Fock mean-field theory within the Hubbard model. We locate the region in the second-neighbor spin-
Externí odkaz:
http://arxiv.org/abs/2303.17101
We investigate the temperature dependence of quasiparticle interference in the high $T_c$-cuprates using an Exact-Diagonalization + Monte-Carlo based scheme to simulate the $d$-wave superconducting order parameter. The quasiparticle interference patt
Externí odkaz:
http://arxiv.org/abs/2210.10521
Autor:
Goyal, Garima, Singh, Dheeraj Kumar
We examine the existence of semimetallic spin-density wave states in iron pnictides. In the experimentally observed metallic spin-density wave state, the symmetry-protected Dirac cones are located away from the Fermi surface giving rise to tiny pocke
Externí odkaz:
http://arxiv.org/abs/2207.04365
Autor:
Rashid, Harun Al, Singh, Dheeraj Kumar
In the half-filled one-orbital Hubbard model on a square lattice, we find pseduogap features in the form of two-peak structures associated with the momentum-resolved spectral function, which exists within the temperature window $T_N \lesssim T \lesss
Externí odkaz:
http://arxiv.org/abs/2207.01243