Suppression of superconductivity inLuxZr1−xB12: Evidence of static magnetic moments induced by nonmagnetic impurities
| Autor: | N. E. Sluchanko, V. V. Glushkov, M. I. Gilmanov, K.V. Mitsen, S. Yu. Gavrilkin, Anatoliy V. Dukhnenko, Sergey Demishev, A. N. Azarevich, Mikhail A. Anisimov, Karol Flachbart, Vladimir V. Voronov, A. L. Khoroshilov, V. B. Filippov, N. Yu. Shitsevalova, A. V. Bogach |
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| Rok vydání: | 2016 |
| Předmět: |
Superconductivity
Physics Condensed matter physics Magnetic moment Spin polarization chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Heat capacity Lutetium Magnetization chemistry Electrical resistivity and conductivity Condensed Matter::Superconductivity 0103 physical sciences 010306 general physics 0210 nano-technology Ground state |
| Zdroj: | Physical Review B. 93 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.93.085130 |
| Popis: | Based on low-temperature resistivity, heat capacity, and magnetization investigations, we show that the unusually strong suppression of superconductivity in ${\mathrm{Lu}}_{x}{\mathrm{Zr}}_{1\ensuremath{-}x}{\mathrm{B}}_{12}$ ($xl8%$) BCS-type superconductors is caused by the emergence of static spin polarization in the vicinity of nonmagnetic lutetium impurities. The analysis of the obtained results points to a formation of static magnetic moments with ${\ensuremath{\mu}}_{\mathrm{eff}}\ensuremath{\approx}6{\ensuremath{\mu}}_{B}$ per ${\mathrm{Lu}}^{3+}$ ion (${}^{1}{S}_{0}$ ground state, $4{f}^{14}$ configuration) incorporated in the superconducting ${\mathrm{ZrB}}_{12}$ matrix. The size of these spin-polarized nanodomains was estimated to be about 5 \AA{}. |
| Databáze: | OpenAIRE |
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