Properties of vortex propagation in a niobium film with spacing-graded density of pinning sites

Lance Horng; T. C. Wu; J. C. Wu; R. Cao; T. J. Yang

doi:10.1063/1.2712323

Properties of vortex propagation in a niobium film with spacing-graded density of pinning sites

Lance Horng, T. C. Wu, J. C. Wu, R. Cao, T. J. Yang

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The vortex propagation has been investigated in Nb superconductors with one dimension spacing-graded density of submicrometer-scaled holes in this research. A rectification effect can be discerned because the applied ac is transformed into a net dc voltage. These results demonstrate that the rectification is mainly characterized by the asymmetric pinning landscape and the rectified voltage depends considerably on temperature and the amplitude of applied ac. The dc voltage increases steeply up to the maximum value and then decreases to zero dc voltage with the increase of ac. The shape of peaks in the dc voltage signal become steeper and move to higher applied ac regime with the decrease of temperature.

Original language	English
Article number	09G113
Journal	Journal of Applied Physics
Volume	101
Issue number	9
DOIs	https://doi.org/10.1063/1.2712323
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1063/1.2712323

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title = "Properties of vortex propagation in a niobium film with spacing-graded density of pinning sites",

abstract = "The vortex propagation has been investigated in Nb superconductors with one dimension spacing-graded density of submicrometer-scaled holes in this research. A rectification effect can be discerned because the applied ac is transformed into a net dc voltage. These results demonstrate that the rectification is mainly characterized by the asymmetric pinning landscape and the rectified voltage depends considerably on temperature and the amplitude of applied ac. The dc voltage increases steeply up to the maximum value and then decreases to zero dc voltage with the increase of ac. The shape of peaks in the dc voltage signal become steeper and move to higher applied ac regime with the decrease of temperature.",

author = "Lance Horng and Wu, {T. C.} and Wu, {J. C.} and R. Cao and Yang, {T. J.}",

note = "Funding Information: This work was supported by the National Science Council of Taiwan of the Republic of China under Grant Nos. NSC 94-2112-M-018-004 and NSC 94-2112-M-009-001. ",

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AU - Cao, R.

AU - Yang, T. J.

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