Artículo
Bordet, P.; Mezouar, M.; Núñez-Regueiro, M.; Monteverde, M.; Núñez-Regueiro, M.D.; Rogado, N.; Regan, K.A.; Hayward, M.A.; He, T.; Loureiro, S.M.; Cava, R.J. "Absence of a structural transition up to 40 GPa in MgB2 and the relevance of magnesium nonstoichiometry" (2001) Physical Review B - Condensed Matter and Materials Physics. 64(17):1725021-1725024
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Abstract:
We report measurements on MgB2 up to ∼40 GPa. Increasing pressure yields a monotonous decrease of the lattice parameters and of the c/a ratio, but no structural transition down to parameters smaller than those of AlB2. The transition superconducting temperature also decreases with temperature in a sample-dependent way. The results are explained by an increase of the filling of the two-dimensional pxy bands with pressure, the Mg stoichiometry determining the starting position of the Fermi level. Our measurements indicate that these hole bands are the relevant ones for superconductivity.
Registro:
| Documento: | Artículo |
| Título: | Absence of a structural transition up to 40 GPa in MgB2 and the relevance of magnesium nonstoichiometry |
| Autor: | Bordet, P.; Mezouar, M.; Núñez-Regueiro, M.; Monteverde, M.; Núñez-Regueiro, M.D.; Rogado, N.; Regan, K.A.; Hayward, M.A.; He, T.; Loureiro, S.M.; Cava, R.J. |
| Filiación: | Laboratoire de Cristallographie, CNRS, B.P. 166, 38042 Grenoble Cedex 9, France European Synchroton Radiation Facility, B.P. 220, 38043 Grenoble Cedex, France Centre de Recherches sur les Très Basses Températures, CNRS, B.P. 166, 38042 Grenoble Cedex 9, France Grenoble High Field Magnetic Laboratory, MPI-FKF, CNRS, B.P. 166, 38042 Grenoble Cedex 9, France Department of Chemistry and Materials Institute, Princeton University, Princeton, NJ 08544, United States Laboratorio de Bajas Temperaturas, Departamento de Física-FCEyN UBA, Ciudad Universitaria Pab. I, 1428 Buenos Aires, Argentina |
| Palabras clave: | magnesium derivative; article; chemical structure; conductance; conductor; measurement; pressure; stoichiometry; structure analysis; temperature dependence |
| Año: | 2001 |
| Volumen: | 64 |
| Número: | 17 |
| Página de inicio: | 1725021 |
| Página de fin: | 1725024 |
| Título revista: | Physical Review B - Condensed Matter and Materials Physics |
| Título revista abreviado: | Phys. Rev. B Condens. Matter Mater. Phys. |
| ISSN: | 01631829 |
| CODEN: | PRBMD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n17_p1725021_Bordet |
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Citas:
---------- APA ----------
Bordet, P., Mezouar, M., Núñez-Regueiro, M., Monteverde, M., Núñez-Regueiro, M.D., Rogado, N., Regan, K.A.,..., Cava, R.J. (2001) . Absence of a structural transition up to 40 GPa in MgB2 and the relevance of magnesium nonstoichiometry. Physical Review B - Condensed Matter and Materials Physics, 64(17), 1725021-1725024.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n17_p1725021_Bordet [ ]
---------- CHICAGO ----------
Bordet, P., Mezouar, M., Núñez-Regueiro, M., Monteverde, M., Núñez-Regueiro, M.D., Rogado, N., et al. "Absence of a structural transition up to 40 GPa in MgB2 and the relevance of magnesium nonstoichiometry" . Physical Review B - Condensed Matter and Materials Physics 64, no. 17 (2001) : 1725021-1725024.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n17_p1725021_Bordet [ ]
---------- MLA ----------
Bordet, P., Mezouar, M., Núñez-Regueiro, M., Monteverde, M., Núñez-Regueiro, M.D., Rogado, N., et al. "Absence of a structural transition up to 40 GPa in MgB2 and the relevance of magnesium nonstoichiometry" . Physical Review B - Condensed Matter and Materials Physics, vol. 64, no. 17, 2001, pp. 1725021-1725024.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n17_p1725021_Bordet [ ]
---------- VANCOUVER ----------
Bordet, P., Mezouar, M., Núñez-Regueiro, M., Monteverde, M., Núñez-Regueiro, M.D., Rogado, N., et al. Absence of a structural transition up to 40 GPa in MgB2 and the relevance of magnesium nonstoichiometry. Phys. Rev. B Condens. Matter Mater. Phys. 2001;64(17):1725021-1725024.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n17_p1725021_Bordet [ ]
