Title of article
Evidence for a two-band behavior of MgB2 from point-contact and tunneling spectroscopy
Author/Authors
Ponomarev، نويسنده , , Ya.G. and Kuzmichev، نويسنده , , S.A. and Mikheev، نويسنده , , M.G. and Sudakova، نويسنده , , M.V. and Tchesnokov، نويسنده , , S.N. and Timergaleev، نويسنده , , N.Z. and Yarigin، نويسنده , , A.V. and Maksimov، نويسنده , , E.G. and Krasnosvobodtsev، نويسنده , , S.I. and Varlashkin، نويسنده , , A.V. and Hein، نويسنده , , M.A. and Müller، نويسنده , , G. and Piel، نويسنده , , H. and Sevastyanova، نويسنده , , L.G. and Kravchenko، نويسنده , , O.V. and Burdina، نويسنده , , K.P. and Bulychev، نويسنده , , B.M.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
5
From page
85
To page
89
Abstract
The break-junction tunneling has been systematically investigated in MgB2. Two types of the break-junction contacts have been exploited on the same samples, which demonstrated tunnel contact like (SIS) and point contact like (SnS) behavior. Both of them have shown the existence of the two distinct energy gaps. We have also observed peculiarities on the I(V)- characteristics related to Leggettʹs collective mode assisted tunneling.
Keywords
74.20.?z , 74.50.+r , D. Two-gap superconductivity , D. Multiple Andreev reflections , D. Tunneling , D. Leggettיs plasmon , 74.70.Ad
Journal title
Solid State Communications
Serial Year
2004
Journal title
Solid State Communications
Record number
1788492
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