Показати простий запис статті
dc.contributor.author |
Tuuli, E. |
|
dc.contributor.author |
Gloos, K. |
|
dc.date.accessioned |
2017-05-30T17:05:10Z |
|
dc.date.available |
2017-05-30T17:05:10Z |
|
dc.date.issued |
2011 |
|
dc.identifier.citation |
Andreev-reflection spectroscopy of ferromagnets: the impact of Fermi surface mismatch / E. Tuuli, K. Gloos // Физика низких температур. — 2011. — Т. 37, № 6. — С. 609–613. — Бібліогр.: 29 назв. — англ. |
uk_UA |
dc.identifier.issn |
0132-6414 |
|
dc.identifier.other |
PACS: 74.45.+c, 72.25.Mk, 73.40.–c, 85.30.Hi |
|
dc.identifier.uri |
http://dspace.nbuv.gov.ua/handle/123456789/118600 |
|
dc.description.abstract |
We have investigated point contacts between a superconductor (Nb, AuIn2) and a normal metal (ferromagnetic Co, nonmagnetic Cu). The observed Andreev-reflection spectra were analyzed using the modified BTK theory including spin polarization effects. This resulted in a polarization of Co that agrees with observations by others, but lifetime effects describe the spectra equally well. On the other hand, the spectra with nonmagnetic Cu can be well described using the spin-polarization model. The ambiguity between polarization and lifetime interpretation poses a dilemma which can be resolved by considering the normal reflection at those interfaces due to Fermi surface mismatch. Our data suggest that Andreev reflection at Nb–Co contacts does deliver the true magnetic polarization of Co only when lifetime effects and the mentioned intrinsic normal reflection are included. |
uk_UA |
dc.description.sponsorship |
We thank the Jenny and Antti Wihuri Foundation for financial support. |
uk_UA |
dc.language.iso |
en |
uk_UA |
dc.publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
uk_UA |
dc.relation.ispartof |
Физика низких температур |
|
dc.subject |
Электронные свойства проводящих систем |
uk_UA |
dc.title |
Andreev-reflection spectroscopy of ferromagnets: the impact of Fermi surface mismatch |
uk_UA |
dc.type |
Article |
uk_UA |
dc.status |
published earlier |
uk_UA |
Файли у цій статті
Ця стаття з'являється у наступних колекціях
Показати простий запис статті