6533b86cfe1ef96bd12c8b6f

RESEARCH PRODUCT

Comparison among superconducting models for β″-ET4[(H3O)Fe(C2O4)3]·C6H5Br single crystals by scanning tunnelling spectroscopy

Carlos Giménez-saizEugenio CoronadoR. Di CapuaR. VaglioMarco AffronteSimona CurreliCarlos J. Gómez-garcíaAlessandro GambardellaU. Del PenninoMarco Salluzzo

subject

SuperconductivityMicroscopeChemistryScanning electron microscopeScanning tunneling spectroscopyAnalytical chemistrysuperconductivity organic materialsBEDT-TTF Organic superconductors Scanning tunnelling microscopy and spectroscopy Abrikosov Gorkov theoryGeneral ChemistryCondensed Matter Physicslaw.inventionOrganic superconductorsTunnel effectScanning tunnelling microscopy and spectroscopylawCondensed Matter::SuperconductivityDensity of statesGeneral Materials ScienceScanning tunneling microscopeBEDT-TTFQuantum tunnelling

description

Single crystals of the novel superconductor beta ''-(BEDT-TTF)(4)[(H3O)Fe(C2O4)(3)]center dot C6H5Br charge-transfer salt were studied using a scanning tunnelling microscope. The measured samples have an onset critical temperature of about 4.0 K. Features often reported on similar compounds were observed in the tunnelling spectra at 1.4 K. STS spectra are compared with several models for the superconducting density of states. Our analysis evidences inhomogeneous superconductivity and indicates that the presence of a magnetic layer into the sample plays a role in determining the superconducting spectroscopic features. (C) 2008 Elsevier Masson SAS. All rights reserved.

yearjournalcountryeditionlanguage
2008-12-01Solid State Sciences
https://doi.org/10.1016/j.solidstatesciences.2007.12.033