395 citations · 1.3k across the 17 of their papers we have counts for
6 papers · 1 filter
Time-reversal symmetry breaking by a density-wave state in underdoped cuprate superconductors
Sumanta Tewari, Chuanwei Zhang, Victor M. Yakovenko +1
It was proposed that the density-wave state (DDW) may be responsible for the pseudogap behavior in the underdoped cuprates. Here we show that the admixture of a smal…
Goldstone modes and electromagnon fluctuations in the conical cycloid state of a multiferroic
Sumanta Tewari, Chuanwei Zhang, John Toner +1
Using a phenomenological Ginzburg-Landau theory for the magnetic conical cycloid state of a multiferroic, which has been recently reported in the cubic spinel CoCrO, we…
Ginzburg-Landau theory for the conical cycloid state in multiferroics: applications to CoCrO
Chuanwei Zhang, Sumanta Tewari, John Toner +1
We show that the cycloidal magnetic order of a multiferroic can arise in the absence of spin and lattice anisotropies, for e.g., in a cubic material, and this explains the occurren…
Testable signatures of quantum non-locality in a two-dimensional chiral p-wave superconductor
Sumanta Tewari, Chuanwei Zhang, S. Das Sarma +2
A class of topological excitations -- the odd-winding-number vortices -- in a spinless 2D chiral p-wave superconductor trap Majorana fermion states in the vortex cores…
Non-equilibrium spin dynamics in a trapped Fermi gas with effective spin-orbit interaction
Tudor D. Stanescu, Chuanwei Zhang, Victor Galitski
We consider a trapped atomic system in the presence of spatially varying laser fields. The laser-atom interaction generates a pseudospin degree of freedom (referred to simply as sp…
Initializing a Quantum Register from Mott Insulator States in Optical Lattices
Chuanwei Zhang, V. W. Scarola, S. Das Sarma
We propose and quantitatively develop two schemes to quickly and accurately generate a stable initial configuration of neutral atoms in optical microtraps by extraction from the Mo…