94 citations · 108 across the 5 of their papers we have counts for
5 papers
Macroscopic entanglement jumps in model spin systems
Indrani Bose, Emily Chattopadhyay
In this paper, we consider some frustrated spin models for which the ground states are known exactly. The concurrence, a measure of the amount of entanglement can be calculated exa…
Magnetization plateaux in a generalised ladder model
Emily Chattopadhyay, Indrani Bose
A spin-1/2 antiferromagnetic(AFM) generalised ladder model is constructed which consists of four-spin plaquettes, coupled through weaker exchange interactions, to two-spin rungs. I…
Magnetization of coupled spin clusters in Ladder Geometry
Emily Chattopadhyay, Indrani Bose
In this paper, we construct a class of spin-1/2 antiferromagnetic (AFM) two-chain ladder models consisting of blocks of n-spin tetrahedral clusters alternating with two-spin rungs.…
Incommensurate structure factor in a hole-doped spin-1 system
Indrani Bose, Emily Chattopadhyay
The nickelate compound Y_{2}BaNiO_{5} is a spin-1 Haldane-gap antiferromagnet. The compound is doped with holes on replacing the off-chain Y^{3+} ions by Ca^{2+} ions. Inelastic ne…
Mixed-spin systems: coexistence of Haldane gap and antiferromagnetic long range order
Indrani Bose, Emily Chattopadhyay
Recent experiments on the quasi-1D antiferromagnets (R = rare earth) have shown the existence of purely 1D Haldane gap excitations propagating on the Ni chains. Be…