dc.contributor.author | Downing, CA | |
dc.contributor.author | Portnoi, ME | |
dc.date.accessioned | 2017-10-16T07:37:56Z | |
dc.date.issued | 2017-10-12 | |
dc.description.abstract | Searching for new states of matter and unusual quasi-particles in emerging materials and especially low-dimensional systems is one of the major trends in contemporary condensed matter physics. Dirac materials, which host quasi-particles which are described by ultrarelativistic Dirac-like equations, are of a significant current interest from both a fundamental and applied physics perspective. Here we show that a pair of two-dimensional massless Dirac–Weyl fermions can form a bound state independently of the sign of the inter-particle interaction potential, as long as this potential decays at large distances faster than Kepler’s inverse distance law. This leads to the emergence of a new type of energetically favorable quasiparticle: bielectron vortices, which are double-charged and reside at zero-energy. Their bosonic nature allows for condensation and may give rise to Majorana physics without invoking a superconductor. These novel quasi-particles arguably explain a range of poorly understood experiments in gated graphene structures at low doping. | en_GB |
dc.description.sponsorship | C.A.D. recognizes financial support from the EPSRC DTP (Award reference 1080089). We also acknowledge support from the CNRS, the EU H2020 RISE project CoExAN (Grant No. H2020-644076), EU FP7 ITN NOTEDEV (Grant No. FP7-607521), and the FP7 IRSES projects CANTOR (Grant No. FP7-612285), QOCaN (Grant No. FP7-316432) and InterNoM (Grant No. FP7-612624). | en_GB |
dc.identifier.citation | Vol. 8, article 897 | en_GB |
dc.identifier.doi | 10.1038/s41467-017-00949-y | |
dc.identifier.uri | http://hdl.handle.net/10871/29834 | |
dc.language.iso | en | en_GB |
dc.publisher | Springer Nature | en_GB |
dc.relation.url | http://hdl.handle.net/10871/30749 | |
dc.rights | Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. | en_GB |
dc.subject | Electronic properties and devices | en_GB |
dc.subject | Surfaces, interfaces and thin films | en_GB |
dc.title | Bielectron vortices in two-dimensional Dirac semimetals | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2017-10-16T07:37:56Z | |
dc.identifier.issn | 2041-1723 | |
exeter.article-number | 897 | en_GB |
dc.description | This is the final version of the article. Available from Springer Nature via the DOI in this record. | en_GB |
dc.description | There is another record in ORE for this article: http://hdl.handle.net/10871/30749 | |
dc.identifier.journal | Nature Communications | en_GB |