103 citations · 198 across the 7 of their papers we have counts for
5 papers · 1 filter
Thermal transport in antiferromagnetic spin-chain materials
A. L. Chernyshev, A. V. Rozhkov
We study the problem of heat transport in one-dimensional (1D) spin-chain systems weakly coupled to three-dimensional phonons and impurities. We consider the limit of fast spin exc…
Thermal conductivity of quasi-one-dimensional antiferromagnetic spin-chain materials
A. V. Rozhkov, A. L. Chernyshev
We study heat transport in quasi-one-dimensional spin-chain systems by considering the model of one-dimensional bosonic spin excitations interacting with three-dimensional phonons…
Higher order effective low-energy theories
A. L. Chernyshev, Dimitrios Galanakis, Philip Phillips +2
Three well-known perturbative approaches to deriving low-energy effective theories, the degenerate Brillouin-Wigner perturbation theory (projection method), the canonical transform…
Anisotropy-induced ordering in the quantum J1-J2 antiferromagnet
Tommaso Roscilde, Adrian Feiguin, Alexander L. Chernyshev +2
We study the effect of spin anisotropies on a frustrated quantum antiferromagnet using the J_1-J_2^{XXZ} model on the square lattice. The T=0 and finite-T phase diagrams of this mo…
Edge States in Doped Antiferromagnetic Nano-Structures
A. L. Chernyshev, A. H. Castro Neto, S. R. White
We study competition between different phases in a strongly correlated nano-structure with an edge. Making use of the self-consistent Green's function and density matrix renormaliz…