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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2007, Volume 85, Issue 1, Pages 52–56
(Mi jetpl945)
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This article is cited in 19 scientific papers (total in 19 papers)
CONDENSED MATTER
Leggett's Mode in Mg$_{1-x}$Al$_x$B$_2$
Ya. G. Ponomareva, S. A. Kuzmicheva, M. G. Mikheeva, M. V. Sudakovaa, S. N. Chesnokova, H. V. Hoanga, B. M. Bulychevb, E. G. Maksimovc, S. I. Krasnosvobodtsevc a Faculty of Physics, Moscow State University
b Faculty of Chemistry, Moscow State University
c P. N. Lebedev Institute of Physics RAS
Abstract:
A detailed investigation of multiband superconductivity and Leggett's mode in the Mg$_{1-x}$Al$_x$B$_2$ $(0\leq x\leq0.45)$ system was carried out using tunneling and Andreev spectroscopy. Temperature dependences of superconducting gaps $\Delta_\sigma$ and $\Delta_\pi$ and their variation upon the degree of disorder and the Al concentration were studied. The dependence of the Leggett's mode energy $\varepsilon_0$ upon the values of the gaps $\Delta_\sigma$ and $\Delta_\pi$ has been derived.
Received: 21.11.2006
Citation:
Ya. G. Ponomarev, S. A. Kuzmichev, M. G. Mikheev, M. V. Sudakova, S. N. Chesnokov, H. V. Hoang, B. M. Bulychev, E. G. Maksimov, S. I. Krasnosvobodtsev, “Leggett's Mode in Mg$_{1-x}$Al$_x$B$_2$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 85:1 (2007), 52–56; JETP Letters, 85:1 (2007), 46–50
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Abstract page: | 327 | Full-text PDF : | 74 | References: | 51 |
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