Phase diagrams of vortex matter with multi-scale inter-vortex interactions in layered superconductors. (16th November 2016)

• Record Type: Journal Article
• Authors: Meng, Qingyou; Varney, Christopher N; Fangohr, Hans; Babaev, Egor
• Is Part Of: Journal of physics. Volume 29:Number 3(2017)
• Publication Date: 2016-11-16
• Subjects: multi-scale interaction -- vortex matter -- type 1.5 superconductor -- layered superconductor -- vortex phases -- phase diagram; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/29/3/035602
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: It was recently proposed to use the stray magnetic fields of superconducting vortex lattices to trap ultracold atoms for building quantum emulators. This calls for new methods for engineering and manipulating of the vortex states. One of the possible routes utilizes type-1.5 superconducting layered systems with multi-scale inter-vortex interactions. In order to explore the possible vortex states that can be engineered, we present two phase diagrams of phenomenological vortex matter models with multi-scale inter-vortex interactions featuring several attractive and repulsive length scales. The phase diagrams exhibit a plethora of phases, including conventional 2D lattice phases, five stripe phases, dimer, trimer, and tetramer phases, void phases, and stable low-temperature disordered phases. The transitions between these states can be controlled by the value of an applied external field.