Enhancement of the superconducting transition temperature of MgB2 by a strain-induced bond-stretching mode softening

A. V. Pogrebnyakov, J. M. Redwing, S. Raghavan, V. Vaithyanathan, D. G. Schlom, S. Y. Xu, Qi Li, D. A. Tenne, A. Soukiassian, X. X. Xi, M. D. Johannes, D. Kasinathan, W. E. Pickett, J. S. Wu, J. C.H. Spence

Research output: Contribution to journalArticle

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Abstract

The increasing transition temperature (To) in MgB2 films deposited by hybrid physical-chemical vapor deposition (HPCVD) was analyzed. Investigations show that the Tc increased due to the softening of bond-stretching E2g phonon mode. The increased T c was observed in the epitaxial films of SiC and sapphire substrates. The results show that the E2g phonon softening was a possible avenue to achieve higher Tc in MgB2-related material systems.

Original languageEnglish (US)
Pages (from-to)147006-1-147006-4
JournalPhysical Review Letters
Volume93
Issue number14
DOIs
StatePublished - Oct 1 2004

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softening
transition temperature
augmentation
sapphire
vapor deposition

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Pogrebnyakov, A. V., Redwing, J. M., Raghavan, S., Vaithyanathan, V., Schlom, D. G., Xu, S. Y., ... Spence, J. C. H. (2004). Enhancement of the superconducting transition temperature of MgB2 by a strain-induced bond-stretching mode softening. Physical Review Letters, 93(14), 147006-1-147006-4. https://doi.org/10.1103/PhysRevLett.93.147006
Pogrebnyakov, A. V. ; Redwing, J. M. ; Raghavan, S. ; Vaithyanathan, V. ; Schlom, D. G. ; Xu, S. Y. ; Li, Qi ; Tenne, D. A. ; Soukiassian, A. ; Xi, X. X. ; Johannes, M. D. ; Kasinathan, D. ; Pickett, W. E. ; Wu, J. S. ; Spence, J. C.H. / Enhancement of the superconducting transition temperature of MgB2 by a strain-induced bond-stretching mode softening. In: Physical Review Letters. 2004 ; Vol. 93, No. 14. pp. 147006-1-147006-4.
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Pogrebnyakov, AV, Redwing, JM, Raghavan, S, Vaithyanathan, V, Schlom, DG, Xu, SY, Li, Q, Tenne, DA, Soukiassian, A, Xi, XX, Johannes, MD, Kasinathan, D, Pickett, WE, Wu, JS & Spence, JCH 2004, 'Enhancement of the superconducting transition temperature of MgB2 by a strain-induced bond-stretching mode softening', Physical Review Letters, vol. 93, no. 14, pp. 147006-1-147006-4. https://doi.org/10.1103/PhysRevLett.93.147006

Enhancement of the superconducting transition temperature of MgB2 by a strain-induced bond-stretching mode softening. / Pogrebnyakov, A. V.; Redwing, J. M.; Raghavan, S.; Vaithyanathan, V.; Schlom, D. G.; Xu, S. Y.; Li, Qi; Tenne, D. A.; Soukiassian, A.; Xi, X. X.; Johannes, M. D.; Kasinathan, D.; Pickett, W. E.; Wu, J. S.; Spence, J. C.H.

In: Physical Review Letters, Vol. 93, No. 14, 01.10.2004, p. 147006-1-147006-4.

Research output: Contribution to journalArticle

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AU - Pogrebnyakov, A. V.

AU - Redwing, J. M.

AU - Raghavan, S.

AU - Vaithyanathan, V.

AU - Schlom, D. G.

AU - Xu, S. Y.

AU - Li, Qi

AU - Tenne, D. A.

AU - Soukiassian, A.

AU - Xi, X. X.

AU - Johannes, M. D.

AU - Kasinathan, D.

AU - Pickett, W. E.

AU - Wu, J. S.

AU - Spence, J. C.H.

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