Vortex pinning and vortex channeling in twinned YBa2Cu3O7
We analyze the effects of correlated disorder on the vortex dynamics in twinned YBa2Cu3O7 crystals by means of susceptibility experiments probing the compression mode of the lattice. When the magnetic field is oriented around the direction of the twin boundaries, the shielding (|χ′|) shows a relativ...
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2000
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| Sumario: | We analyze the effects of correlated disorder on the vortex dynamics in twinned YBa2Cu3O7 crystals by means of susceptibility experiments probing the compression mode of the lattice. When the magnetic field is oriented around the direction of the twin boundaries, the shielding (|χ′|) shows a relative maximum or relative minimum amplitude when H ∥ c, depending on whether temperature is above or below a well-defined Tch. At T > Tch, the relative maximum manifests vortex pinning by the boundaries, whereas below Tch the boundaries may form channel walls for easy paths for vortex flow and thereby the shielding for H ∥ c is lower than for other field orientations. © 2000 Elsevier Science B.V. All rights reserved. |
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| Bibliografía: | Kwok, W.K., (1996) Phys. Rev. Lett., 76, p. 4596 Oussena, M., (1995) Phys. Rev. B, 51, p. 1389 |
| ISSN: | 09214526 |
| DOI: | 10.1016/S0921-4526(99)02202-4 |