Title

Possible High-Temperature Superconductivity In Multilayer Graphane: Can The Cuprates Be Beaten?

Keywords

Electron-phonon coupling; Hydrogenated graphene; Superconductivity

Abstract

We analyze a possible superconductivity in the hole-doped system of layered hydrogenized graphene by taking into account thermal fluctuations of the order parameter. In particular, we demonstrate that in the one-layer case the values of the high mean-field (MF) critical temperature T cMFsim 80-90 K, predicted recently by Savini et al (Phys. Rev. Lett. 105:037002, 2010), do not alter significantly due to the fluctuations, and the Berezinskii-Kosterlitz-Thouless (BKT) critical temperature of the vortex superconductivity is almost the same as the MF temperature at doping 0.01-0.1. We show that in the case of multilayer system, when the coupling between the layers stabilizes the superconducting phase in the form of fluxon superconductivity, the critical temperature T c can increase dramatically to the values ∼150 K, higher than the corresponding values in cuprates under ambient pressure. © 2011 Springer Science+Business Media, LLC.

Publication Date

9-1-2011

Publication Title

Journal of Low Temperature Physics

Volume

164

Issue

5-6

Number of Pages

264-271

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s10909-011-0376-7

Socpus ID

80052593003 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80052593003

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