3 papers
cond-mat.str-el2020
U(1)-Symmetry protected Dirac nodal loops of triplons in SrCu2(BO3)2
Dhiman Bhowmick, Pinaki Sengupta
We demonstrate the appearance of symmetry protected triplon Dirac modal lines in the low energy excitation spectrum of a realistic microscopic model of the geometrically frustrated…
cond-mat.str-el2020
The topological magnon bands in the Flux state in Sashtry-Sutherland lattice
Dhiman Bhowmick, Pinaki Sengupta
We investigate low energy magnon excitations above the non-collinear flux state and non-coplanar canted flux state in a Heisenberg anti-ferromagnet with Dzyaloshinskii-Moriya inter…
cond-mat.str-el2019
Anti-chiral edge states in Heisenberg ferromagnet on a honeycomb lattice
Dhiman Bhowmick, Pinaki Sengupta
We demonstrate the emergence of anti-chiral edge states in a Heisenberg ferromagnet with Dzyaloshinskii-Moriya interaction(DMI) on a honeycomb lattice with in-equivalent sub-lattic…