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Superconducting State Parameters of CuCZr100-C Binary Amorphous Alloys by Pseudopotential Approach |
| Aditya M. Vora |
| Parmeshwari 165, Vijaynagar Area, Hospital Road, Bhuj-Kutch, 370 001, Gujarat, India |
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| Cite this article: |
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Aditya M. Vora 2007 Chin. Phys. Lett. 24 2624-2627 |
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Abstract We present the screening dependence theoretical investigations of the
superconducting state parameters, i.e. electron--phonon coupling strength
α, Coulomb pseudopotential μ*, transition temperature Tc, isotope effect exponent α, and effective interaction strength N0V of some CuCZr100-C (C=25, 30, 33, 35, 40, 45, 50, 55, 57, 60 at.%) binary amorphous alloys by employing the well-known empty core model potential of Ashcroft. Five screening functions proposed by Hartree, Taylor, Ichimaru-Utsumi, Farid et
al. and Sarkar it et al. are used to study the screening influence on the aforesaid superconducting properties. The transition temperature Tc obtained from the Ichimaru-Utsumi screening function is found to be in excellent agreement with available theoretical or experimental data. Also, the present results are found in qualitative agreement with the other earlier reported data, which confirms the superconducting phase in the amorphous alloys.
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| Keywords:
61.43.Dq
71.15.Dx
74.20.-z
74.70.Ad
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Received: 27 January 2007
Published: 16 August 2007
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| PACS: |
61.43.Dq
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(Amorphous semiconductors, metals, and alloys)
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71.15.Dx
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(Computational methodology (Brillouin zone sampling, iterative diagonalization, pseudopotential construction))
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74.20.-z
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(Theories and models of superconducting state)
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74.70.Ad
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(Metals; alloys and binary compounds)
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[14] Minnigerode G von and Samwer K 1981 Physica B 108 1217
[15] McMillan W L 1968 Phys. Rev. 167 331 |
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