NDLI: Superconductivity in β-Tin Germanium

Content Provider	Springer Nature Link
Author	Zhang, Chao Chen, Xiao Jia Lin, Hai Qing
Copyright Year	2012
Abstract	The superconducting properties of the β-tin germanium under pressure have been investigated by the first-principles calculations based on density functional perturbation theory. The electron–phonon coupling strength as a function of pressure was calculated, and it deceases with the application of pressure. Using the calculated electron–phonon coupling strength, the superconducting transition temperature T $_{ c }$ has been estimated. Assuming a nominal Coulomb repulsion parameter of 0.1, the calculated T $_{ c }$ is in excellent agreement with experimental data. The T $_{ c }$ correlates with electron–phonon coupling strength, indicating phonon-mediated superconductivity in β-tin Ge phase. Our findings have great implications to other Group IVa elements.
Starting Page	2009
Ending Page	2011
Page Count	3
File Format	PDF
ISSN	15571939
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	26
Issue Number	5
e-ISSN	15571947
Language	English
Publisher	Springer US
Publisher Date	2012-12-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Germanium Electron–phonon coupling Pressure effect First-principles calculations Strongly Correlated Systems, Superconductivity Magnetism, Magnetic Materials Condensed Matter Physics Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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