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BCS-like superconductivity in the noncentrosymmetric compounds NbxRe1-x (0.13 <= x <= 0.38)

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons126930

Zhang,  J. L.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126782

Nicklas,  M.
Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126861

Steglich,  F.
Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126919

Yuan,  H. Q.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Chen, J., Jiao, L., Zhang, J. L., Chen, Y., Yang, L., Nicklas, M., et al. (2013). BCS-like superconductivity in the noncentrosymmetric compounds NbxRe1-x (0.13 <= x <= 0.38). Physical Review B, 88(14): 144510, pp. 144510-1-144510-6. doi:10.1103/PhysRevB.88.144510.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0015-1E3A-D
Zusammenfassung
We present research on the superconducting properties of NbxRe1-x (x = 0.13-0.38) obtained by measuring the electrical resistivity rho(T), magnetic susceptibility chi(T), specific heat C-P (T), and London penetration depth Lambda lambda(T). It is found that the superconducting transition temperature Tc decreases monotonically with an increase of x. The upper critical field B-c2(T) for various x can be nicely scaled by its corresponding T-c. The electronic specific heat C-e(T)/T, penetration depth Delta lambda(T), and superfluid density rho(s)(T) demonstrate exponential behavior at low temperatures and can be well fitted by a one-gap BCS model. The residual Sommerfeld coefficient gamma(0)(B) in the superconducting state follows a linear field dependence. All these properties suggest an s-wave BCS-type of superconductivity with a very large B-c2(0) for NbxRe1-x (0.13 <= x <= 0.38).