11 citations · 38 across the 8 of their papers we have counts for
8 papers
Orbital ordering in undoped manganites via a generalized Peierls instability
S. Yarlagadda, P. B. Littlewood, M. Mitra +1
We study the ground state orbital ordering of , at weak electron-phonon coupling, when the spin state is A-type antiferromagnet. We determine the orbital ordering by exten…
Jahn-Teller Coupled Charge Density Wave in A Two Orbital Double Exchange System
Manidipa Mitra
In a two orbital double exchange model we formulate Jahn-Teller coupled charge density wave in one electron per lattice site limit. Softening of Jahn-Teller phonons corresponding t…
Orbital ordering in undoped manganites using Jahn-Teller interaction
Sudhakar Yarlagadda, Manidipa Mitra
To understand the orbital ordering of in the ground state, we study it in the A-type spin antiferromagnetic state. We calculate the two-dimensional response functions ass…
Polaronic Heat Capacity in The Anderson - Hasegawa Model
Manidipa Mitra, P. A. Sreeram, Sushanta Dattagupta
An exact treatment of the Anderson - Hasegawa two - site model, incorporating the presence of superexchange and polarons, is used to compute the heat capacity. The calculated resul…
Quantum Treatment of the Anderson-Hasegawa Model -- Effects of Superexchange and Polarons
Manidipa Mitra, P. A. Sreeram, Sushanta Dattagupta
We revisit the Anderson-Hasegawa double-exchange model and critically examine its exact solution when the core spins are treated quantum mechanically.We show that the quantum effec…
Magnetic transition and polaron crossover in a two-site single polaron model including double exchange interaction
Jayita Chatterjee, Manidipa Mitra, A. N. Das
A two-site double exchange model with a single polaron is studied using a perturbation expansion based on the modified Lang-Firsov transformation. The antiferromagnetic to ferromag…