3 papers
cond-mat.str-el2026
Kitaev model in a magnetic field: stable emergent structure, degenerate classical ground states, and reentrant topology
Sheikh Moonsun Pervez
We have studied the anti-ferromagnetic Kitaev model on a honeycomb lattice under the Zeeman field, using an extensive Majorana mean-field analysis. When the magnetic field is along…
cond-mat.mes-hall2026
Quantum Otto heat-engine with Kitaev-Heisenberg cluster: Possible roles of frustration, magnons, and duality
Sheikh Moonsun Pervez, Saptarshi Mandal
We study the performance of Kitaev-Heisenberg (KH) clusters as working media realizing a quantum Otto engine (QOE). An external Zeeman field with linear time dependency is used as…
cond-mat.str-el2025
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…