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Subgap structures in the current-voltage characteristic of the intrinsic Josephson effect due to phonons | | Ch. Helm
; Ch. Preis
; F. Forsthofer
; J. Keller
; K. Schlenga
; R. Kleiner
; P. Müller
; | | Date: |
30 Dec 1996 | | Journal: | Physica C 293 (1997),60-63. | | Subject: | Superconductivity | cond-mat.supr-con | | Affiliation: | University of Regensburg, Germany) and K. Schlenga, R. Kleiner, P. Müller (University of Erlangen, Germany | | Abstract: | A modified RSJ-model for the coupling of intrinsic Josephson oscillations and c-axis phonons in the high-T_c superconductors Tl_2Ba_2Ca_2Cu_3O_{10+delta} and Bi_2Sr_2CaCu_2O_{8+delta} is deveoped. This provides a very good explanation for recently reported subgap structures in the I-V-characteristic of the c-axis transport. It turns out that the voltages of these structures coincide with the eigenfrequencies of longitudinal optical phonons, providing a new measurement technique for this quantity. The significantly enhanced microwave emission at the subgap structures in both the GHz and THz region is discussed. | | Source: | arXiv, cond-mat/9701215 | | Services: | Forum | Review | PDF | Favorites | |
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