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Simulation of the phase diagram of magnetic vortices in two-dimensional superconductors: evidence for vortex chain formation

Simulation of the phase diagram of magnetic vortices in two-dimensional superconductors: evidence for vortex chain formation
Simulation of the phase diagram of magnetic vortices in two-dimensional superconductors: evidence for vortex chain formation
We study the superconducting vortex states induced by the interplay of long-range Pearl repulsion and short-range intervortex attraction using Langevin dynamics simulations. We show that at low temperatures the vortices form an ordered Abrikosov lattice both in low and high fields. The vortices show distinctive modulated structures at intermediate fields depending on the effective intervortex attraction: ordered vortex chain and kagome-like vortex structures for weak attraction; bubble, stripe and antibubble lattices for strong attraction. Moreover, in the regime of the chain state, the vortices display structural transitions from chain to labyrinthine (or disordered chain) and/or to disordered states depending on the strength of the disorder.
0953-8984
1-7
Xu, X.B.
a2ddcbc4-6195-426f-b0dc-60e6f560fa07
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Gu, M.
9f22a6ef-7e9e-4074-b0de-c1e843705d96
Chen, W.
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Wang, Z.H.
8ed29dad-b9a9-4f17-8aef-7da278c2a057
Zhou, F.
7a3bb861-3b3a-448c-a266-c47dd356d448
Shi, D.Q.
294be8e6-69c8-4cac-9fde-4dae24c47748
Dou, S.X.
896fcf39-9c7c-459e-a50b-11efc49b05a6
Xu, X.B.
a2ddcbc4-6195-426f-b0dc-60e6f560fa07
Fangohr, H.
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Gu, M.
9f22a6ef-7e9e-4074-b0de-c1e843705d96
Chen, W.
99d5f0b4-a927-4e63-be3c-25fbbe9933bc
Wang, Z.H.
8ed29dad-b9a9-4f17-8aef-7da278c2a057
Zhou, F.
7a3bb861-3b3a-448c-a266-c47dd356d448
Shi, D.Q.
294be8e6-69c8-4cac-9fde-4dae24c47748
Dou, S.X.
896fcf39-9c7c-459e-a50b-11efc49b05a6

Xu, X.B., Fangohr, H., Gu, M., Chen, W., Wang, Z.H., Zhou, F., Shi, D.Q. and Dou, S.X. (2014) Simulation of the phase diagram of magnetic vortices in two-dimensional superconductors: evidence for vortex chain formation. Journal of Physics: Condensed Matter, 26 (11), 1-7. (doi:10.1088/0953-8984/26/11/115702).

Record type: Article

Abstract

We study the superconducting vortex states induced by the interplay of long-range Pearl repulsion and short-range intervortex attraction using Langevin dynamics simulations. We show that at low temperatures the vortices form an ordered Abrikosov lattice both in low and high fields. The vortices show distinctive modulated structures at intermediate fields depending on the effective intervortex attraction: ordered vortex chain and kagome-like vortex structures for weak attraction; bubble, stripe and antibubble lattices for strong attraction. Moreover, in the regime of the chain state, the vortices display structural transitions from chain to labyrinthine (or disordered chain) and/or to disordered states depending on the strength of the disorder.

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Xu et al J Cond Phys 26 115702 2014.pdf - Accepted Manuscript
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Published date: 3 March 2014
Organisations: Engineering Science Unit

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Local EPrints ID: 367500
URI: https://eprints.soton.ac.uk/id/eprint/367500
ISSN: 0953-8984
PURE UUID: 4885443a-77ae-4feb-b16f-4a519c5d7dca

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Date deposited: 31 Jul 2014 09:18
Last modified: 29 Nov 2018 17:32

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