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Supersolidity in a Bose-Holstein model by Datta, Sanjoy; Yarlagadda, Sudhakar is a scholarly article available to read on EtoBox.

What is Supersolidity in a Bose-Holstein model about?

We derive an effective d-dimensional Hamiltonian for a system of hard-core-bosons coupled to optical phonons in a lattice. At non-half-fillings, a superfluid-supersolid transition occurs at intermediate boson-phonon couplings, while at strong-couplings the system phase separates. We demonstrate explicitly that the presence of next-nearest-neighbor hopping and nearest-neighbor repulsion leads to supersolidity. Thus we present a microscopic mechanism for the homogeneous coexistence of charge-density-wave and superfluid orders.

Author

Datta, Sanjoy; Yarlagadda, Sudhakar

Published

2009

Language

EN