136 citations · 342 across the 6 of their papers we have counts for
6 papers
Efficient Density Matrix Renormalization Group algorithm to study Y-Junctions with integer and half-integer spin
Manoranjan Kumar, Aslam Parvej, Simil Thomas +2
An efficient density matrix renormalization group (DMRG) algorithm is presented and applied to Y-junctions, systems with three arms of sites that meet at a central site. The ac…
Decoupled phase of frustrated spin-1/2 antiferromagnetic chains with and without long range order in the ground state
Manoranjan Kumar, Z. G. Soos
The quantum phases of one-dimensional spin chains are discussed for models with two parameters, frustrating exchange between second neighbors and normalized…
Quantum spin liquid in frustrated one dimensional LiCuSbO4
S. E. Dutton, M. Kumar, M. Mourigal +8
A quantum magnet, LiCuSbO4, with chains of edge-sharing S = 1/2 CuO6 octahedra is reported. While the Curie-Weiss constant is ferromagnetic, θ= 30 K, no phase transition or spin fr…
Bond-order wave phase, spin solitons and thermodynamics of a frustrated linear spin-1/2 Heisenberg antiferromagnet
Manoranjan Kumar, S. Ramasesha, Z. G. Soos
The linear spin-1/2 Heisenberg antiferromagnet with exchanges , between first and second neighbors has a bond-order wave (BOW) phase that starts at the fluid-dimer trans…
Charge redistribution and polarization energy of organic molecular crystals
E. V. Tsiper, Z. G. Soos
We present an approach to electronic polarization in molecular solids treated as a set of quantum systems interacting classically. Individual molecules are dealt with rigorously as…
Symmetry crossover and excitation thresholds at the neutral-ionic transition of the modified Hubbard model
Y. Anusooya-Pati, Z. G. Soos, A. Painelli
Exact ground states, charge densities and excitation energies are found using valence bond methods for N-site modified Hubbard models with uniform spacing. At the neutral-ionic tra…