395 citations · 791 across the 29 of their papers we have counts for
19 papers · 1 filter
Deciphering competing interactions of Kitaev-Heisenberg- system in clusters: part I -- static properties
Sheikh Moonsun Pervez, Saptarshi Mandal
Recently, the Kitaev-Heisenberg- system has been used to explore various aspects of Kitaev spin liquid physics. Here, we consider a few small clusters of up to twelve sites and…
Projective symmetry group classification of Abrikosov fermion mean-field ansätze on the square-octagon lattice
Atanu Maity, Francesco Ferrari, Ronny Thomale +2
We perform a projective symmetry group (PSG) classification of symmetric quantum spin liquids with different gauge groups on the square-octagon lattice. Employing the Abrikosov fer…
Ground state many-body quantum entanglement of frustrated transverse field models on square lattice
Vikas Vijigiri, K G Paulson, Saptarshi Mandal +1
We study the ground state (GS) many-body quantum entanglement of two different transverse field models on a quasi-2D square lattice relevant to a Hydrogen-bonded crystal, i.e, squa…
Competing orders in a frustrated Heisenberg model on the Fisher lattice
Atanu Maity, Yasir Iqbal, Saptarshi Mandal
We investigate the Heisenberg model on a decorated square (Fisher) lattice in the presence of first-neighbor , second-neighbor , and third-neighbor exchange c…
An introduction to Kitaev model-I
Saptarshi Mandal, Arun M Jayannavar
This pedagogical article is aimed to the beginning graduate students interested in broad field of frustrated magnetism. We introduce and present some of the exact results obtained…
Existence of nodal line semi-metal in a generalized three dimensional Haldane model
Sudarshan Saha, Saptarshi Mandal
We construct and study a time reversal broken tight binding model on diamond lattice with complex next-nearest-neighbour hopping which can be thought of as a generalisation of two…