Phase Diagram of Superfluid 3He in a Nematic Aerogel in a Strong Magnetic Field


The simultaneous effect of a nematic aerogel and a strong magnetic field on the phase diagram of superfluid 3He is considered. Using the Ginzburg–Landau theory, the domains of existence of new phases, viz., β phase (P1), distorted β phase (P2), distorted A phase (\(A_{4}^{{({\text{I}})}}\)), and distorted planar phase (\(A_{4}^{{{\text{(II)}}}}\)), are determined. It is shown that order parameter components of the β phase have the maximal transition temperature. The conditions for the existence of the second-order transition from the distorted β phase to the distorted planar phase is formulated.

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The author is grateful to I.A. Fomin, V.V. Dmitriev, and A.A. Soldatov for fruitful discussions of the results.

This study was supported by the Russian Science Foundation (project no. 18-12-00384).

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Correspondence to E. V. Surovtsev.

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Translated by N. Wadhwa

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Surovtsev, E.V. Phase Diagram of Superfluid 3He in a Nematic Aerogel in a Strong Magnetic Field. J. Exp. Theor. Phys. 128, 477–484 (2019).

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