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Defect Formation in Quench-Cooled Superfluid Phase Transition | V.M. Ruutu
; V.B. Eltsov
; M. Krusius
; Yu.G. Makhlin
; B. Placais
; G.E. Volovik
; | Date: |
5 Jun 1997 | Journal: | Phys. Rev. Lett. 80 (1998) 1465 | Subject: | Statistical Mechanics | cond-mat.stat-mech hep-ph | Abstract: | We use neutron absorption in rotating 3He-B to heat locally a 10 micrometer-size volume into normal phase. When the heated region cools back in microseconds, vortex lines are formed. We record with NMR the number of lines as a function of superflow velocity and compare to the Kibble-Zurek theory of vortex-loop freeze-out from a random network of defects. The measurements confirm the calculated loop-size distribution and show that also the superfluid state itself forms as a patchwork of competing A and B phase blobs. This explains the A to B transition in supercooled neutron-irradiated 3He-A. | Source: | arXiv, cond-mat/9706038 | Services: | Forum | Review | PDF | Favorites |
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