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Observation of a pseudogap in α-AlMnSi by break-junction tunneling spectroscopy

Authors
Journal
Journal of Non-Crystalline Solids
0022-3093
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/s0022-3093(02)01734-9

Abstract

Abstract Tunneling spectroscopy studies of an α-Al 9Mn 1.8Si 2 single crystal were made at 4.2 K with the break-junction technique. A narrow dip at zero bias ( V=0) with peaks on both sides was observed in the spectrum, which corresponds to a pseudogap of 25 meV in the density of states. The dense set of sharp spikes predicted by the band calculations for the crystal was not observed.

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