91 citations · 276 across the 8 of their papers we have counts for
10 papers
Disorder effect on 3-dimensional quantum spin Hall systems
Ryuichi Shindou, Shuichi Murakami
In this paper, we studied the nonmagnetic disorder effects onto the quantum critical point (QCP) which intervenes an ordinary insulator and the 3-dimensional quantum spin Hal…
Characterization of two-dimensional fermionic insulating states
Ryuichi Shindou, Ken-Ichiro Imura, Masao Ogata
Inspired by the duality picture between superconductivity and insulator in two spatial dimension, we conjecture that the order parameter, suitable for characterizing 2D fermionic i…
Gradient expansion approach to multiple-band Fermi liquids
Ryuichi Shindou, Leon Balents
Promoted by the recent progress of Berry phase physics in spin galvanomagnetic communities, we develop a systematic derivation of the reduced Keldysh equation (RKE) which captures…
Effective Hamiltonians for some highly frustrated magnets
Doron L. Bergman, Ryuichi Shindou, Gregory A. Fiete +1
In prior work, the authors developed a method of degenerate perturbation theory about the Ising limit to derive an effective Hamiltonian describing quantum fluctuations in a half-p…
Degenerate perturbation theory of quantum fluctuations in a pyrochlore antiferromagnet
Doron L. Bergman, Ryuichi Shindou, Gregory A. Fiete +1
We study the effect of quantum fluctuations on the half-polarized magnetization plateau of a pyrochlore antiferromagnet. We argue that an expansion around the easy axis limit is ap…
Mechanisms of degeneracy breaking in pyrochlore antiferromagnets
Doron L. Bergman, Ryuichi Shindou, Gregory A. Fiete +1
Motivated by the low temperature magnetization curves of several spinel chromites, we theoretically study classical mechanisms of degeneracy lifting in pyrochlore antiferromagnets.…