Unbinding of giant vortices in states of competing order.
Unbinding of giant vortices in states of competing order.
复制标题
在竞争秩序状态下解除巨大漩涡的束缚。
DOI:
10.1103/physrevlett.109.155703
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发表时间:
2012
影响因子:
8.6
通讯作者:
Fellows JM
中科院分区:
文献类型:
--
作者:
Fellows JM
We consider a two-dimensional system with two order parameters, one with O(2) symmetry and one with, near a point in parameter space where they couple to become a singleorder. While the O(2) sector supports vortex excitations, these vortices must somehow disappear as the high symmetry point is approached. We develop a variational argument which shows that the size of the vortex cores diverges asand the Berezinskii-Kosterlitz-Thouless transition temperature of the O(2) order vanishes as 1/ln(1/Δ), wheredenotes the distance from the high-symmetry point. Our physical picture is confirmed by a renormalization group analysis which gives further logarithmic corrections, and demonstrates full symmetry restoration within the cores.
影响因子:
3.7
作者:
A. Pelissetto;E. Vicari
通讯作者:
E. Vicari
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
L. Ioffe;A. Millis
通讯作者:
A. Millis
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
A. Rozhkov;A. Millis
通讯作者:
A. Millis