Artículo
Abstract:
High pressure experiments have revealed that Tc is affected by two main pressure-dependent parameters: the doping level of the CuO2 planes and by an intrinsic factor. The origin of the intrinsic factor is still unclear as, depending on the experiment, it is associated with the reduction of the c or the a lattice parameters. F incorporation into the Hg-1223 structure yields an enhancement of Tc up to a susceptibility onset of 138 K, mainly related to a compression of the a crystallographic axis. We have obtained a new high Tc record (166 K ± 1.5 K) by applying pressure (23 GPa) in the fluorinated Hg-1223 superconductor optimally doped. Tc increases with increasing pressure, reaching different maximum values, depending on the F doping level, and decreases for a further increase of pressure. This saturation of Tc may be the highest Tc that can be obtained for the cuprates, considering the particular structural characteristics of this system. © 2004 Elsevier B.V. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Fluorinated Hg-1223 under pressure: The ultimate Tc of the cuprates? |
| Autor: | Monteverde, M.; Núñez-Regueiro, M.; Acha, C.; Lokshin, K.A.; Pavlov, D.A.; Putilin, S.N.; Antipov, E.V. |
| Ciudad: | Rio de Janeiro |
| Filiación: | Ctr. Rech. sur les Tres Basses Temp., C.N.R.S., 25 Avenue des Martyrs, Cedex 9, 38042 Grenoble, France Lab. de Bajas Temperaturas, Depto. de Física, PAB I, (C1428EHA) Buenos Aires, Argentina Department of Chemistry, Moscow State University, Moscow 119992, Russian Federation |
| Palabras clave: | Cuprates; Fluorinated Hg-1223; Pressure effects; Crystallographic axis; Cuprates; Fluorinated Hg-123; Intrinsic factors; Buckling; Charge transfer; Copper oxides; Crystallography; Doping (additives); Fluorine compounds; Lattice constants; Mathematical models; Mercury (metal); Pressure effects; Pressure measurement; Superconducting materials; Superconducting transition temperature; Oxide superconductors |
| Año: | 2004 |
| Volumen: | 408-410 |
| Número: | 1-4 |
| Página de inicio: | 23 |
| Página de fin: | 24 |
| DOI: | http://dx.doi.org/10.1016/j.physc.2004.02.020 |
| Título revista: | Proceedings of the International Conference on Materials |
| Título revista abreviado: | Phys C Supercond Appl |
| ISSN: | 09214534 |
| CODEN: | PHYCE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214534_v408-410_n1-4_p23_Monteverde |
Referencias:
- Núñez-Regueiro, M., Acha, C., (2000) Studies on High Tc Superconductors, 24. , Commack, NY: Nova Science. and references therein
- Presland, M.R., (1991) Physica C, 176, p. 95
- Lokshin, K.A., (2001) Phys. Rev. B, 63, p. 064511
- Gao, (1994) Phys. Rev. B, 50, p. 4260
- Cao, (1995) Phys. Rev. B, 52, p. 6854
Citas:
---------- APA ----------
Monteverde, M., Núñez-Regueiro, M., Acha, C., Lokshin, K.A., Pavlov, D.A., Putilin, S.N. & Antipov, E.V. (2004) . Fluorinated Hg-1223 under pressure: The ultimate Tc of the cuprates?. Proceedings of the International Conference on Materials, 408-410(1-4), 23-24.http://dx.doi.org/10.1016/j.physc.2004.02.020
---------- CHICAGO ----------
Monteverde, M., Núñez-Regueiro, M., Acha, C., Lokshin, K.A., Pavlov, D.A., Putilin, S.N., et al. "Fluorinated Hg-1223 under pressure: The ultimate Tc of the cuprates?" . Proceedings of the International Conference on Materials 408-410, no. 1-4 (2004) : 23-24.http://dx.doi.org/10.1016/j.physc.2004.02.020
---------- MLA ----------
Monteverde, M., Núñez-Regueiro, M., Acha, C., Lokshin, K.A., Pavlov, D.A., Putilin, S.N., et al. "Fluorinated Hg-1223 under pressure: The ultimate Tc of the cuprates?" . Proceedings of the International Conference on Materials, vol. 408-410, no. 1-4, 2004, pp. 23-24.http://dx.doi.org/10.1016/j.physc.2004.02.020
---------- VANCOUVER ----------
Monteverde, M., Núñez-Regueiro, M., Acha, C., Lokshin, K.A., Pavlov, D.A., Putilin, S.N., et al. Fluorinated Hg-1223 under pressure: The ultimate Tc of the cuprates?. Phys C Supercond Appl. 2004;408-410(1-4):23-24.http://dx.doi.org/10.1016/j.physc.2004.02.020
