43 citations · 208 across the 17 of their papers we have counts for
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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…
Tunable wavevector filtering in borophane based normal metal-barrier-normal metal junctions
Prasun Das, Sangita De Sarkar, Asim Kumar Ghosh
We study the transport properties of Dirac electrons across a two-dimensional normal metal-barrier-normal metal (NBN) interfaces in monolayer borophane. We analyse the transmission…
Emergence of photo-induced multiple topological phases on square octagon lattice
Arghya Sil, Asim Kumar Ghosh
In this study, a tight-binding model on square octagon lattice with nearest-neighbour and next-nearest-neighbour hoppings is considered. The system is topologically trivial althoug…
Tight-binding dispersion of the prismatic pentagonal lattice
Susobhan Paul, Asim Kumar Ghosh
Tight-binding Hamiltonian on the prismatic pentagonal lattice is exactly solved to obtain the analytic expressions of dispersion relations and eigenvectors. This lattice is made of…
Multiple gaps in the tight-binding band of a pentagonal lattice
Susobhan Paul, Asim Kumar Ghosh
Multiple gaps in the tight-binding band of a pentagonal lattice are found. Unlike the Cairo pentagonal lattice this lattice is made of irregular pentagons with arms of different le…