43 citations · 208 across the 17 of their papers we have counts for
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Magnetic field induced topological nodal-lines in triplet excitations of frustrated antiferromagnet CaVO
Moumita Deb, Asim Kumar Ghosh
Magnetic field induced multiple non-Dirac nodal-lines are found to emerge in the triplet dispersion bands of a frustrated spin-1/2 antiferromagnetic model on the CaVO lattice. Plaq…
Topological magnons in ferromagnetic Kitaev-Heisenberg model on CaVO lattice
Moumita Deb, Asim Kumar Ghosh
A number of topological phases are found to emerge in the ferromagnetic Kitaev-Heisenberg model on CaVO lattice in the presence of Dzyaloshinskii-Moriya interaction. Heisenberg and…
First and Second Order Topological Phases on Ferromagnetic Breathing Kagome Lattice
Arghya Sil, Asim Kumar Ghosh
In this work, topological properties of a ferromagnetic Heisenberg model on a breathing kagome lattice are investigated extensively in the presence of Dzyaloshinskii-Moriya interac…
Antikink dispersions of the - sawtooth spin-1/2 anisotropic Heisenberg antiferromagnetic chain
Susobhan Paul, Asim Kumar Ghosh
Antikink dispersion of the asymmetric - sawtooth spin-1/2 anisotropic Heisenberg antiferromagnetic chain has been derived. Value of spin-gap is obtained by estimating the…
Exotic topological point and line nodes in the plaquette excitations of a frustrated Heisenberg antiferromagnet on the honeycomb lattice
Moumita Deb, Asim Kumar Ghosh
A number of topological nodes including Dirac, quadratic and triple band touching points as well as a pair of degenerate Dirac line nodes are found to emerge in the triplet plaquet…
Field-induced disorder in a gapped spin system with non-magnetic impurities
H. -J. Mikeska, Asimkumar Ghosh, A. K. Kolezhuk
We study S=1/2 dimers which are weakly coupled by three-dimensional antiferromagnetic interactions J'. It is commonly known that doping with non-magnetic impurities immediately ind…