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Tuning the disorder in superglasses.

Authors :
Larson D
Kao YJ
Source :
Physical review letters [Phys Rev Lett] 2012 Oct 12; Vol. 109 (15), pp. 157202. Date of Electronic Publication: 2012 Oct 09.
Publication Year :
2012

Abstract

We study the interplay of superfluidity, glassy, and magnetic orders in the XXZ model with random Ising interactions on a three dimensional cubic lattice. In the classical limit, this model reduces to a ±J Edwards-Anderson Ising model with concentration p of ferromagnetic bonds, which hosts a glassy-ferromagnetic transition at a critical concentration p(c)(cl)~0.77. Our quantum Monte Carlo simulation results show that quantum fluctuations stabilize the coexistence of superfluidity and glassy order (superglass), and shift the (super)glassy-ferromagnetic transition to p(c)>p(c)(cl). In contrast, antiferromagnetic order coexists with superfluidity to form a supersolid, and the transition to the glassy phase occurs at a higher p.

Details

Language :
English
ISSN :
1079-7114
Volume :
109
Issue :
15
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
23102360
Full Text :
https://doi.org/10.1103/PhysRevLett.109.157202