Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices
The measurement of the complex impedance response and accompanied power absorption P(ω) in the radiofrequency and microwave ranges represents a most popular experimental method to investigate pinning mechanisms and the vortex dynamics in type-II superconductors. In the theory, the pinning potentia...
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| Published in: | Физика низких температур |
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| Date: | 2013 |
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| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2013
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/118260 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Determination of the coordinate dependence of a pinning
 potential from the microwave experiment with vortices / V.A. Shklovskij, O.V. Dobrovolskiy // Физика низких температур. — 2013. — Т. 39, № 2. — С. 162–167. — Бібліогр.: 20 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862715405808697344 |
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| author | Shklovskij, V.A. Dobrovolskiy, O.V. |
| author_facet | Shklovskij, V.A. Dobrovolskiy, O.V. |
| citation_txt | Determination of the coordinate dependence of a pinning
 potential from the microwave experiment with vortices / V.A. Shklovskij, O.V. Dobrovolskiy // Физика низких температур. — 2013. — Т. 39, № 2. — С. 162–167. — Бібліогр.: 20 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The measurement of the complex impedance response and accompanied power absorption P(ω) in the radiofrequency and microwave ranges represents a most popular experimental method to investigate pinning mechanisms and the vortex dynamics in type-II superconductors. In the theory, the pinning potential (PP) well for a vortex must be a priori specified in order to subsequently analyze the measured data. We have theoretically solved the inverse problem at T = 0 K and exemplify how the coordinate dependence of a PP can be determined from a set of experimental curves P(ω|j₀) measured at subcritical dc currents 0 < j₀ < jc under a small microwave excitation j₁ << jc with frequency ω. We furthermore elucidate how and why the depinning frequency ωp, which separates the non-dissipative (quasi-adiabatic) and the dissipative (high-frequency) regimes of small vortex oscillations in the PP, is reduced with the increase of j₀. The results can be directly applied to a wide range of conventional superconductors with a PP subjected to superimposed dc and small microwave ac currents at T << Tc.
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| first_indexed | 2025-12-07T17:58:09Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-118260 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T17:58:09Z |
| publishDate | 2013 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Shklovskij, V.A. Dobrovolskiy, O.V. 2017-05-29T14:21:05Z 2017-05-29T14:21:05Z 2013 Determination of the coordinate dependence of a pinning
 potential from the microwave experiment with vortices / V.A. Shklovskij, O.V. Dobrovolskiy // Физика низких температур. — 2013. — Т. 39, № 2. — С. 162–167. — Бібліогр.: 20 назв. — англ. 0132-6414 PACS: 74.25.Wx, 74.25.F–, 74.25.nn https://nasplib.isofts.kiev.ua/handle/123456789/118260 The measurement of the complex impedance response and accompanied power absorption P(ω) in the radiofrequency and microwave ranges represents a most popular experimental method to investigate pinning mechanisms and the vortex dynamics in type-II superconductors. In the theory, the pinning potential (PP) well for a vortex must be a priori specified in order to subsequently analyze the measured data. We have theoretically solved the inverse problem at T = 0 K and exemplify how the coordinate dependence of a PP can be determined from a set of experimental curves P(ω|j₀) measured at subcritical dc currents 0 < j₀ < jc under a small microwave excitation j₁ << jc with frequency ω. We furthermore elucidate how and why the depinning frequency ωp, which separates the non-dissipative (quasi-adiabatic) and the dissipative (high-frequency) regimes of small vortex oscillations in the PP, is reduced with the increase of j₀. The results can be directly applied to a wide range of conventional superconductors with a PP subjected to superimposed dc and small microwave ac currents at T << Tc. V.A.S. thanks partial financial support from the STCU
 project BNL-T2-368-UA through Grant No. P-424. O.V.D.
 gratefully acknowledges financial support by the Deutsche
 Forschungsgemeinschaft (DFG) through Grant No. DO
 1511/2-1. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Свеpхпpоводимость, в том числе высокотемпеpатуpная Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices Article published earlier |
| spellingShingle | Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices Shklovskij, V.A. Dobrovolskiy, O.V. Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| title | Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices |
| title_full | Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices |
| title_fullStr | Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices |
| title_full_unstemmed | Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices |
| title_short | Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices |
| title_sort | determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices |
| topic | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| topic_facet | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/118260 |
| work_keys_str_mv | AT shklovskijva determinationofthecoordinatedependenceofapinningpotentialfromthemicrowaveexperimentwithvortices AT dobrovolskiyov determinationofthecoordinatedependenceofapinningpotentialfromthemicrowaveexperimentwithvortices |