Evidence for a two-band behavior of MgB2 from point-contact and tunneling spectroscopy

Autor:	Helmut Piel, S. N. Tchesnokov, Boris M. Bulychev, S.I. Krasnosvobodtsev, K. P. Burdina, A. V. Yarigin, Ya. G. Ponomarev, Matthias Hein, N. Z. Timergaleev, M. G. Mikheev, G. Müller, M. V. Sudakova, S. A. Kuzmichev, Evgenii G. Maksimov, A.V. Varlashkin, O. V. Kravchenko, L.G. Sevastyanova
Rok vydání:	2004
Předmět:	Two band Point contact Condensed matter physics Chemistry Collective mode Materials Chemistry General Chemistry Condensed Matter Physics Spectroscopy Quantum tunnelling
Zdroj:	Solid State Communications. 129:85-89
ISSN:	0038-1098
Popis:	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 Leggett's collective mode assisted tunneling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b3ea0482f6e5b0a1941f80ca4032ff86 https://doi.org/10.1016/j.ssc.2003.09.024 Zobrazit plný text záznamu Full Text from ScienceDirect