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- Government of West BengalIN23 papers
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4 papers · 2 filters
Quantum phases of spin-1/2 extended XY model in transverse magnetic field
Rakesh Kumar Malakar, Asim Kumar Ghosh
In this study, a spin-1/2 extended anisotropic XY chain has been introduced in which both time reversal and SU(2) symmetries are broken but symmetry is preserved. Magnetic an…
Topological phases of monolayer and bilayer depleted Lieb lattices
Arghya Sil, Asim Kumar Ghosh
Existence of nontrivial topological phases in a tight binding Haldane-like model on the depleted Lieb lattice is reported. This two-band model is formulated by considering the near…
Resonant transport in a highly conducting single molecular junction via metal-metal covalent bond
Biswajit Pabi, Štepán Marek, Adwitiya Pal +5
Achieving highly transmitting molecular junctions through resonant transport at low bias is key to the next-generation low-power molecular devices. Although, resonant transport in…
Engineering topological phases of any winding and Chern numbers in extended Su-Schrieffer-Heeger models
Rakesh Kumar Malakar, Asim Kumar Ghosh
Simple route of engineering topological phases for any desired value of winding and Chern numbers is found in the Su-Schrieffer-Heeger (SSH) model by adding a further neighbor hopp…