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STM tunnelling spectroscopy in MgB2 thin films: the role of band structure in tunnelling spectra
Journal article   Peer reviewed

STM tunnelling spectroscopy in MgB2 thin films: the role of band structure in tunnelling spectra

M Iavarone, G Karapetrov, A E Koshelev, W K Kwok, G W Crabtree, W N Kang, E M Choi, H J Kim and S I Lee
Superconductor science & technology, v 17(5), pp S106-S111
01 May 2004

Abstract

Physical Sciences Physics Physics, Applied Physics, Condensed Matter Science & Technology
A very peculiar feature of the recently discovered superconductor MgB2 is the multigap nature of the superconducting state, which is now commonly accepted in the scientific community and confirmed by a large number of experiments. We report a systematic scanning tunnelling spectroscopy (STS) study performed on high quality thin films of MgB2. Electron microscopy images and STM topography together with the STS investigation allow a direct correlation between tunnelling direction and the observed tunnelling spectra, confirming that the two-gap state is intrinsic to MgB2.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Physics, Applied
Physics, Condensed Matter
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