On LarkinImryMa State of ^{3}HeA in Aerogel
Abstract
Superfluid ^{3}HeA shares the properties of spin nematic and chiral orbital ferromagnet. Its order parameter is characterized by two vectors hat{textbf{d}} and hat{textbf{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 LarkinImryMa state, which is characterized by the shortrange orientational order of the vector hat{textbf{l}} , while the longrange 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 LarkinImryMa effect leading to the uniform orientation of hat{textbf{l}} . The interplay of regular and random anisotropy allows us to study many different effects.
 Publication:

Journal of Low Temperature Physics
 Pub Date:
 February 2008
 DOI:
 10.1007/s1090900795793
 arXiv:
 arXiv:0704.2484
 Bibcode:
 2008JLTP..150..453V
 Keywords:

 Condensed Matter  Disordered Systems and Neural Networks;
 Condensed Matter  Soft Condensed Matter;
 High Energy Physics  Phenomenology
 EPrint:
 10 pages, 6 Figures, new JLTP style, version to be published in JLTP (Proceedings of QFS2007)