83 citations · 156 across the 6 of their papers we have counts for
6 papers
Spin Waves in Antiferromagnetic Spin Chains with Long Range Interactions
Eddy Yusuf, Anuvrat Joshi, Kun Yang
We study antiferromagnetic spin chains with unfrustrated long-range interactions that decays as a power law with exponent , using the spin wave approximation. We find for suffic…
Theory for spin and orbital orderings in high temperature phase in
Theja N. De Silva, Anuvrat Joshi, Michael Ma +1
Motivated by the recent neutron diffraction experiment on , we consider a microscopic model where each ion is occupied by two 3d electrons of parallel spins with tw…
Bond-randomness-induced Neel order in weakly coupled antiferromagnetic spin chains
A. Joshi, Kun Yang
Quasi-one-dimensional antiferromagnetic (AF) quantum spin systems show a wide range of interesting phenomena such as the spin-Peierls transition and disorder driven long range orde…
Theory for Phase Transitions in Insulating Vanadium Oxide
A. Joshi, Michael Ma, F. C. Zhang
We show that the recently proposed S=2 bond model with orbital degrees of freedom for insulating VO not only explains the anomalous magnetic ordering, but also other my…
Orbitally Degenerate Spin-1 Model for Insulating V2O3
F. Mila, R. Shiina, F. -C. Zhang +4
Motivated by recent neutron, X-ray absorption and resonant scattering experiments, we revisit the electronic structure of V2O3. We propose a model in which S=1 V3+ ions are coupled…
Elementary excitations of magnetically ordered systems with orbital degeneracy
A. Joshi, M. Ma, F. Mila +2
The Holstein-Primakoff transformation is generalized to develop a quantum flavor wave theory for spin systems with orbital degeneracy. Elementary excitations consist of spin, orbit…