Supersolid Phase Induced by Correlated Hopping in Spin-1/2Frustrated Quantum Magnets

2007/06/30 by Kai P. Schmidt, Kai Phillip Schmidt, J. Dorier +5 · 4 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Ising model #Lattice (music) #Magnetic and transport properties of perovskites and related materials #Monte Carlo method #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum Monte Carlo #Quantum mechanics #Semiclassical physics #Square lattice #Statistics #Supersolid #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.100.090401

published as Physical Review Letters 100, 090401 (2008) · 4 pages; 4 figures; published version

openalex publication_date 2008/03/03 · arxiv created 2008/03/28 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We show that correlated hopping of triplets, which is often the dominant source of kinetic energy in dimer-based frustrated quantum magnets, produces a remarkably strong tendency to form supersolid phases in a magnetic field. These phases are characterized by simultaneous modulation and ordering of the longitudinal and transverse magnetization, respectively. Using quantum Monte Carlo and a semiclassical approach for an effective hard-core boson model with nearest-neighbor repulsion on a square lattice, we prove, in particular, that a supersolid phase can exist even if the repulsion is not strong enough to stabilize an insulating phase at half-filling. Experimental implications for frustrated quantum antiferromagnets in a magnetic field at zero and finite temperature are discussed.

Citations

• Quantum and Thermal Transitions Out of the Supersolid Phase of a 2D Quantum Antiferromagnet
• Supersolidity from defect condensation in the extended boson Hubbard model

Cited by

• High-order study of the quantum critical behavior of a frustrated spin-12 antiferromagnet on a stacked honeycomb bilayer
• Field dependence of the quantum ground state in the Shastry-Sutherland system SrCu 2 (BO 3 ) 2
• Magnetization plateaux in an extended Shastry-Sutherland model
• Inhomogeneous hard-core bosonic mixture with checkerboard supersolid phase: Quantum and thermal phase diagram

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