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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Видавець:	Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
Дата:	2013
Автори:	Shklovskij, V.A., Dobrovolskiy, O.V.
Формат:	Стаття
Мова:	English
Опубліковано:	Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2013
Назва видання:	Физика низких температур
Теми:	Свеpхпpоводимость, в том числе высокотемпеpатуpная
Онлайн доступ:	http://dspace.nbuv.gov.ua/handle/123456789/118260
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Цитувати:	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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id	irk-123456789-118260
record_format	dspace
spelling	irk-123456789-1182602017-05-30T03:05:14Z 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 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. 2013 Article 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 http://dspace.nbuv.gov.ua/handle/123456789/118260 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution	Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection	DSpace DC
language	English
topic	Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная
spellingShingle	Свеpхпpоводимость, в том числе высокотемпеpатуpная Свеpхпpоводимость, в том числе высокотемпеpатуpная Shklovskij, V.A. Dobrovolskiy, O.V. Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices 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.
format	Article
author	Shklovskij, V.A. Dobrovolskiy, O.V.
author_facet	Shklovskij, V.A. Dobrovolskiy, O.V.
author_sort	Shklovskij, V.A.
title	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_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_sort	determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices
publisher	Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate	2013
topic_facet	Свеpхпpоводимость, в том числе высокотемпеpатуpная
url	http://dspace.nbuv.gov.ua/handle/123456789/118260
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.
series	Физика низких температур
work_keys_str_mv	AT shklovskijva determinationofthecoordinatedependenceofapinningpotentialfromthemicrowaveexperimentwithvortices AT dobrovolskiyov determinationofthecoordinatedependenceofapinningpotentialfromthemicrowaveexperimentwithvortices
first_indexed	2023-10-18T20:31:32Z
last_indexed	2023-10-18T20:31:32Z
_version_	1796150432560578560

Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices

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