University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Charge fluctuation of the superconducting molecular crystals

Yamamoto, T, Nakazawa, Y, Kato, R, Yamamoto, H, Yakushi, K, Akutsu, H, Akustu, AS, Kawamoto, A, Turner, SS and Dayg, P (2010) Charge fluctuation of the superconducting molecular crystals Physica B: Condensed Matter, 405 (11 SUP).

[img] PDF
2010 PhysicaB pS237 HA.pdf
Restricted to Repository staff only

Download (149kB)

Abstract

In recent years, concern has been raised about the charge fluctuation of the superconducting transition in the loosely dimerized molecular conductors. Not only the observation of the charge fluctuation is of considerably important but also the understanding of the mechanism of the fluctuation. We have observed degree of charge fluctuation of several β''-type ET salts. The β''-type ET salt is one of the best model compounds because the direction of the largest inter-site Coulomb interaction is perpendicular to that of the largest transfer integral. This structural property allows us to examine the role of inter-site Coulomb interaction from the viewpoint of the inter-molecular distance. The difference in the molecular charges between the charge rich site and the charge poor sites, Δρ, is correlated with the conducting behavior; the superconducting materials have the small but finite Δρ, whereas Δρ of the insulating (metallic) materials is large (almost zero). After the analysis of the configuration in the inter-molecular distances, we have found that the degree of fluctuation, Δρ, is attributed to the number of the most stable charge distribution(s), NS, and the number of the energy levels of the allowed charge distribution, NA. The superconducting materials belong to the condition of N ≥2 and N ge;2. Indeed, this condition contributes to the fluctuation of the molecular charges. © 2010 Elsevier B.V. All rights reserved.

Item Type: Article
Authors :
AuthorsEmailORCID
Yamamoto, TUNSPECIFIEDUNSPECIFIED
Nakazawa, YUNSPECIFIEDUNSPECIFIED
Kato, RUNSPECIFIEDUNSPECIFIED
Yamamoto, HUNSPECIFIEDUNSPECIFIED
Yakushi, KUNSPECIFIEDUNSPECIFIED
Akutsu, HUNSPECIFIEDUNSPECIFIED
Akustu, ASUNSPECIFIEDUNSPECIFIED
Kawamoto, AUNSPECIFIEDUNSPECIFIED
Turner, SSUNSPECIFIEDUNSPECIFIED
Dayg, PUNSPECIFIEDUNSPECIFIED
Date : 1 June 2010
Identification Number : https://doi.org/10.1016/j.physb.2009.11.059
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 15:52
Last Modified : 28 Mar 2017 15:52
URI: http://epubs.surrey.ac.uk/id/eprint/802681

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800