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5 papers · 2 filters
Frustrated spin-1/2 ladder with ferro- and antiferromagnetic legs
Debasmita Maiti, Dayasindhu Dey, Manoranjan Kumar
Two-leg spin-1/2 ladder systems consisting of a ferromagnetic leg and an antiferromagnetic leg are considered where the spins on the legs interact through antiferromagnetic rung co…
A Study of Topological Quantum Phase Transition and Majorana Localization Length for the Interacting Helical Liquid System
Dayasindhu Dey, Sudip Kumar Saha, P. Singha Deo +2
We consider a helical spin liquid system which shows majorana fermion modes at the edge. The interaction between the quasiparticles in this system induces phase transition, Majoran…
Quantum phases of frustrated 2-leg spin-1/2 ladders with skewed rungs
Geetanjali Giri, Dayasindhu Dey, Manoranjan Kumar +2
The quantum phases of 2-leg spin-1/2 ladders with skewed rungs are obtained using exact diagonalization of systems with up to 26 spins and by density matrix renormalization group c…
Multipolar phase in frustrated spin-1/2 and 1 chains
Aslam Parvej, Manoranjan Kumar
The spin chain model with nearest neighbor and next nearest neighbor anti-ferromagnetic interaction is one of the most popular frustrated magnetic models. Thi…
Effective interaction in a non-Fermi liquid conductor and spin correlations in under-doped cuprates
Suraka Bhattacharjee, Ranjan Chaudhury
The effective interaction between the itinerant spin degrees of freedom in the paramagnetic phases of hole doped quantum Heisenberg antiferromagnets is investigated theoretically,…