Physical insight of superconductivity of Nb 2 AlC:  in situ  Raman spectrometry investigation | Zendy

Xiang Huimin | Zendy; Wang Xiaohui | Zendy; Wang Jingyang | Zendy; Zhou Yanchun | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Physical insight of superconductivity of Nb 2 AlC: in situ Raman spectrometry investigation

Author(s) -

Xiang Huimin,

Wang Xiaohui,

Wang Jingyang,

Zhou Yanchun

Publication year - 2013

Publication title -

journal of raman spectroscopy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.748

H-Index - 110

eISSN - 1097-4555

pISSN - 0377-0486

DOI - 10.1002/jrs.4196

Subject(s) - superconductivity , phonon , raman spectroscopy , anharmonicity , condensed matter physics , coupling (piping) , raman scattering , atmospheric temperature range , line (geometry) , spectral line , materials science , chemistry , physics , quantum mechanics , thermodynamics , geometry , mathematics , metallurgy

Superconductivity of Nb 2 AlC has been previously reported, but the origin is not clear. In this paper, in situ Raman spectra of Nb 2 AlC are measured in the temperature range from 80 to 380 K at ambient pressure. The line‐width of E 2g ( ω 1 ) mode increases with temperature which originates from the anharmonic phonon–phonon scattering. On the contrary the line‐widths of E 2g ( ω 2 ) and A 1g ( ω 4 ) modes decrease continuously at elevated temperature. The phenomenon is explained by the electron–phonon coupling. The origin of superconductivity is therefore interpreted by the coupling of Nb 4d electrons with E 2g ( ω 2 ) and A 1g ( ω 4 ) phonon modes. Copyright © 2013 John Wiley & Sons, Ltd.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research