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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2010, Volume 91, Issue 11, Pages 669–675
(Mi jetpl738)
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This article is cited in 52 scientific papers (total in 52 papers)
CONDENSED MATTER
Orbital glass and spin glass states of $^3$He-A in aerogel
V. V. Dmitrieva, D. A. Krasnikhina, N. Muldersb, A. A. Senina, G. E. Volovikcd, A. N. Yudina a P. L. Kapitza Institute for Physical Problems RAS
b Department of Physics and Astronomy, University of Delaware
c L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences
d Low Temperature Laboratory, Helsinki University of Technology
Abstract:
Glass states of superfluid A-like phase of $^3$He in aerogel induced by random orientations of aerogel strands are investigated theoretically and experimentally. In anisotropic aerogel with stretching deformation two glass phases are observed. Both phases represent the anisotropic glass of the orbital ferromagnetic vector $\hat {\mathbf l}$ – the orbital glass (OG). The phases differ by the spin structure: the spin nematic vector $\hat {\mathbf d}$ can be either in the ordered spin nematic (SN) state or in the disordered spin-glass (SG) state. The first phase (OG-SN) is formed under conventional cooling from normal $^3$He. The second phase (OG-SG) is metastable, being obtained by cooling through the superfluid transition temperature, when large enough resonant continuous radio-frequency excitation is applied. NMR signature of different phases allows us to measure the parameter of the global anisotropy of the orbital glass induced by deformation.
Received: 29.04.2010
Citation:
V. V. Dmitriev, D. A. Krasnikhin, N. Mulders, A. A. Senin, G. E. Volovik, A. N. Yudin, “Orbital glass and spin glass states of $^3$He-A in aerogel”, Pis'ma v Zh. Èksper. Teoret. Fiz., 91:11 (2010), 669–675; JETP Letters, 91:11 (2010), 599–606
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https://www.mathnet.ru/eng/jetpl738 https://www.mathnet.ru/eng/jetpl/v91/i11/p669
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Abstract page: | 264 | Full-text PDF : | 68 | References: | 45 |
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