Chin. Phys. Lett.  2010, Vol. 27 Issue (2): 026102    DOI: 10.1088/0256-307X/27/2/026102
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
Superconducting State Parameters of NbxTayMoz Superconductors
Aditya M. Vora
Humanities and Social Science Department, S. T. B. S. College of Diploma Engineering, Opp. Spinning Mill, Varachha Road, Surat 395 006, Gujarat, India
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Aditya M. Vora 2010 Chin. Phys. Lett. 27 026102
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Abstract We present screening dependence theoretical investigations of the superconducting state parameters, i.e. electron-phonon coupling strength λ, Coulomb pseudopotential μ*, transition temperature TC, isotope effect exponent α, and effective interaction strength N0V, of some BMG superconductors, namely Nb0.45Ta0.45Mo0.10, Nb0.30Ta0.40Mo0.30, Nb0.40Ta0.30Mo0.30, Nb0.30Ta0.30Mo0.40 and Nb0.15Ta0.15Mo0.70 by employing the well-known empty core model potential of Ashcroft for the first time. Five local field correction functions proposed by Hartree, Taylor, Ichimaru-Utsumi, Farid et al. and Sarkar et al. are used in the present investigation to study the screening influence on the aforesaid superconducting properties. The transition temperature TC obtained from the H-local field correction function is found to be in an excellent agreement with the available theoretical data. Also, the present results are found to be in qualitative agreement with other such earlier reported data, which confirms the superconducting phase in the superconductors.
Keywords: 61.43.Dq      71.15.Dx      74.20.-z      74.70.Ad     
Received: 11 February 2009      Published: 08 February 2010
PACS:  61.43.Dq (Amorphous semiconductors, metals, and alloys)  
  71.15.Dx (Computational methodology (Brillouin zone sampling, iterative diagonalization, pseudopotential construction))  
  74.20.-z (Theories and models of superconducting state)  
  74.70.Ad (Metals; alloys and binary compounds)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/2/026102       OR      https://cpl.iphy.ac.cn/Y2010/V27/I2/026102
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Articles by authors
Aditya M. Vora
[1] Vora Aditya M 2008 J. Non-Cryst. Solids 354 522
[2] Vora Aditya M 2009 Turkish J. Phys. 33 57
[3] Vora Aditya M 2008 Chin. Phys. Lett. 25 2162
[4] Wang W H, Dong C and Shek C H 2004 Mater Sci. Eng. Rep. 44 45
[5] Tang M B, Zhao D Q, Pan M X and Wang W H 2004 Chin. Phys. Lett. 21 901
[6] Tang M B, Bai H Y, Pan M X, Zhao D Q and Wang W H 2005 J. Non-Cryst. Solids 351 2572
[7] Li Y and Bai H Y 2005 J. Non-Cryst. Solids 351 2378
[8] Harrison W A 1999 Elementary Electronic Structure (Singapore: World Scientific)
[9] Taylor R 1978 J. Phys. F 8 1699
[10] Ichimaru S and Utsumi K 1981 Phys. Rev. B 24 7386
[11] Farid B, Heine V, Engel G and Robertson I J 1993 Phys. Rev. B 48 11602
[12] Sarkar A, Sen D, Haldar H and Roy D 1998 Modern Phys. Lett. B 12 639
[13] Ashcroft N W 1966 Phys. Lett. 23 48
[14] Butler W H 1977 Phys. Rev. B 15 5267
[15] Chatterjee P 1980 Can J. Phys. 58 1383
[16] McMillan W L 1968 Phys. Rev. 167 331
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