2 4 Ju l 2 00 3 Robust Superfluid Phases of 3 He in Aerogel
نویسنده
چکیده
Within a phenomenological approach possible forms of the order parameter of the superfluid phases of 3He in a vicinity of the transition temperature are discussed. Effect of aerogel is described by a random tensor field interacting with the orbital part of the order parameter. With respect to their interaction with the random tensor field a group of ”robust” order parameters which can maintain long-range order in a presence of the random field is specified. Robust order parameters, corresponding to Equal Spin Pairing (ESP) states are found and proposed as candidates for the observed A-like superfluid phase of liquid 3He in aerogel.
منابع مشابه
1 M ay 2 00 5 No robust phases in aerogel : 3 He - A with orientational disorder in the Ginzburg - Landau model
In series of papers [1, 2] Fomin introduced and discussed the so-called robust phases in a system with frozen orientational disorder (with application to superfluid 3 He in aerogel). We show that his consideration is based on the erroneous overestimation of the fluctuation energy which comes from the interaction of the Goldstone modes with the frozen disorder. This interaction leads to the Imry...
متن کامل2 9 Ju l 2 00 6 Longitudinal resonance and identification of the order parameter of the A - like phase in superfluid 3 He in aerogel . I . A . Fomin
Longitudinal resonance and identification of the order parameter of the Alike phase in superfluid 3 He in aerogel. Abstract Qualitative interpretation of the recent experiments of V.V. Dmitriev et. al. on longitudinal resonance in the Alike phase, based on specific properties of " robust " order parameter is proposed. In the recent experiments of Dmitriev et al. [1] the longitudinal NMR in the ...
متن کامل6 N ov 2 00 6 Longitudinal resonance and identification of the order parameter of the A - like phase of superfluid 3 He in aerogel . I . A . Fomin
Longitudinal resonance and identification of the order parameter of the Alike phase of superfluid 3 He in aerogel. Abstract Interpretation of the recent experiments of V.V. Dmitriev et. al. on longitudinal resonance in the Alike phase, based on specific properties of " robust " order parameter is proposed. In the recent experiments of Dmitriev et al. [1] the longitudinal NMR in the superfluid 3...
متن کاملHe-a with Orientational Disorder in the Ginzburg-landau Model. (comment on Papers by I.a. Fomin on Robust Phases)
In series of papers [1, 2] Fomin introduced and discussed the so-called robust phases in a system with frozen orientational disorder (with application to superfluid 3 He in aerogel). We show that his consideration is based on the erroneous overestimation of the fluctuation energy which comes from the interaction of the Goldstone modes with the frozen disorder. This interaction leads to the Imry...
متن کاملJa n 20 04 Superfluid Phases of 3 He in Aerogel . I . A . Fomin P . L . Kapitza
Within a phenomenological approach a criterion for a choice of forms of the order parameter of the superfluid phases of 3 He in aero-gel in a vicinity of the transition temperature is derived. The order parameter of bulk B-phase of 3 He meets this criterion and that of the bulk A-phase doesn't. A class of order parameters of Equal Spin Pairing (ESP) type meeting the derived criterion is discuss...
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