Defect Formation in Quench-Cooled Superfluid Phase Transition
统计力学
2009-10-30 v2 高能物理 - 唯象学
摘要
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.
引用
@article{arxiv.cond-mat/9706038,
title = {Defect Formation in Quench-Cooled Superfluid Phase Transition},
author = {V. M. Ruutu and V. B. Eltsov and M. Krusius and Yu. G. Makhlin and B. Placais and G. E. Volovik},
journal= {arXiv preprint arXiv:cond-mat/9706038},
year = {2009}
}
备注
RevTex file, 4 pages, 3 figures, resubmitted to Phys. Rev. Lett