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CONDENSED MATTER

Phase diagram of superfluid $\rm^3He$ in “nematically ordered” aerogel

R. Sh. Askhadullin^a, V. V. Dmitriev^b, D. A. Krasnikhin^b, P. N. Martynov^a, A. A. Osipov^a, A. A. Senin^b, A. N. Yudin<sup>b

a</sup> Institute for physics and power engineering named after A. I. Leypunsky
^b P. L. Kapitza Institute for Physical Problems

Abstract: Results of experiments with liquid $\rm^3He$ immersed in a new type of aerogel are described. This aerogel consists of $\rm Al_2O_3\cdot H_2O$ strands which are nearly parallel to each other, so we call it as a “nematically ordered” aerogel. At all used pressures a superfluid transition was observed and a superfluid phase diagram was measured. Possible structures of the observed superfluid phases are discussed.

Received: 13.02.2012

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2012, 95:6, 326–331

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