On Larkin-Imry-Ma State of 3He-A in Aerogel
arXiv:0704.2484 · doi:10.1007/s10909-007-9579-3
Abstract
Superfluid 3He-A shares the properties of spin nematic and chiral orbital ferromagnet. Its order parameter is characterized by two vectors d and l. This doubly anisotropic superfluid, when it is confined in aerogel, represents the most interesting example of a system with continuous symmetry in the presence of random anisotropy disorder. We discuss the Larkin-Imry-Ma state, which is characterized by the short-range orientational order of the vector l, while the long-range orientational order is destroyed by the collective action of the randomly oriented aerogel strings. On the other hand, sufficiently large regular anisotropy produced either by the deformation of the aerogel or by applied superflow suppresses the Larkin-Imry-Ma effect leading to the uniform orientation of the vector l. This interplay of regular and random anisotropy allows us to study many different effects.
10 pages, 6 Figures, new JLTP style, version to be published in JLTP (Proceedings of QFS-2007)
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Cited by in corpus (13)
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- Anisotropic 2D Larkin-Imry-Ma state in polar distorted ABM phase of 3He in "nematically ordered" aerogel
- Classical spin models with broken symmetry: Random Field Induced Order and Persistence of spontaneous magnetization in presence of a random field
- Anisotropic phases of superfluid 3He in compressed aerogel
- Anisotropic Strong Coupling Effects on Superfluid 3He in Aerogels - Conventional Spin-Fluctuation Approach -
- Stripe order in superfluid 3He confined in narrow cylinders
- Random Anisotropy Magnet at Finite Temperature
- Random field and random anisotropy O(N) spin systems with a free surface
- Superfluid He in globally isotropic random media
- Effect of Dilute Random Field on Continuous-Symmetry Order Parameter
- Planar and Nematic Aerogels: DLCA and Superfluid 3He
- Energy minima and ordering in ferromagnets with quenched randomness
- Local structure of ordered and disordered states of 3He-A in aerogel