Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal
We present the results of transport study of vortex dynamics in YBa₂Cu₃O₆.₈₇ crystals in the magnetic field
 H||c. In low magnetic fields, H<4 kOe, the measurements were performed in the range of vortex velocities
 v=10⁻⁴–2 m/s, which covers thermal creep and flux flow modes....
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| Published in: | Физика низких температур |
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| Date: | 2008 |
| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2008
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/117334 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Creep and depinning of vortices in nontwinned
 YBa₂Cu₃O₆.₈₇ single crystal
 / A.V. Bondarenko, A.A. Zavgorodniy, D.A. Lotnik,
 M.A. Obolenskii, R.V. Vovk // Физика низких температур. — 2008. — Т. 34, № 7. — С. 645–652. — Бібліогр.: 41 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862620675569614848 |
|---|---|
| author | Bondarenko, A.V. Zavgorodniy, A.A. Lotnik, D.A. Obolenskii, M.A. Vovk, R.V. |
| author_facet | Bondarenko, A.V. Zavgorodniy, A.A. Lotnik, D.A. Obolenskii, M.A. Vovk, R.V. |
| citation_txt | Creep and depinning of vortices in nontwinned
 YBa₂Cu₃O₆.₈₇ single crystal
 / A.V. Bondarenko, A.A. Zavgorodniy, D.A. Lotnik,
 M.A. Obolenskii, R.V. Vovk // Физика низких температур. — 2008. — Т. 34, № 7. — С. 645–652. — Бібліогр.: 41 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | We present the results of transport study of vortex dynamics in YBa₂Cu₃O₆.₈₇ crystals in the magnetic field
H||c. In low magnetic fields, H<4 kOe, the measurements were performed in the range of vortex velocities
v=10⁻⁴–2 m/s, which covers thermal creep and flux flow modes. The pinning force Fp nonmonotonically depends
on magnetic field in both modes, though low-field minimum in the Fp(H) curve shifts to higher fields
with increased velocity v, that is interpreted as partial ordering the vortex lattice. The increase of the pinning
force Fp upon increasing the field, which is observed in the flux flow mode in fields H≥3 kOe, is interpreted
by presence of finite transverse barriers. The barriers result in preserving the entangled vortex solid phase for
the above-barrier vortex motion along the action of the Lorentz force. We also show that field variation of the
depinning current has a single maximum, while field variation of the pinning force inside deep creep mode has
two maxima. Appearance of two maxima is associated with nonmonotonous field variation of the activation
energyUpl, which corresponds to plastic vortex creep mediated by motion of the dislocations.
|
| first_indexed | 2025-12-07T13:23:27Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-117334 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T13:23:27Z |
| publishDate | 2008 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Bondarenko, A.V. Zavgorodniy, A.A. Lotnik, D.A. Obolenskii, M.A. Vovk, R.V. 2017-05-22T14:08:40Z 2017-05-22T14:08:40Z 2008 Creep and depinning of vortices in nontwinned
 YBa₂Cu₃O₆.₈₇ single crystal
 / A.V. Bondarenko, A.A. Zavgorodniy, D.A. Lotnik,
 M.A. Obolenskii, R.V. Vovk // Физика низких температур. — 2008. — Т. 34, № 7. — С. 645–652. — Бібліогр.: 41 назв. — англ. 0132-6414 PACS: 74.25.Qt;74.72.Bk https://nasplib.isofts.kiev.ua/handle/123456789/117334 We present the results of transport study of vortex dynamics in YBa₂Cu₃O₆.₈₇ crystals in the magnetic field
 H||c. In low magnetic fields, H<4 kOe, the measurements were performed in the range of vortex velocities
 v=10⁻⁴–2 m/s, which covers thermal creep and flux flow modes. The pinning force Fp nonmonotonically depends
 on magnetic field in both modes, though low-field minimum in the Fp(H) curve shifts to higher fields
 with increased velocity v, that is interpreted as partial ordering the vortex lattice. The increase of the pinning
 force Fp upon increasing the field, which is observed in the flux flow mode in fields H≥3 kOe, is interpreted
 by presence of finite transverse barriers. The barriers result in preserving the entangled vortex solid phase for
 the above-barrier vortex motion along the action of the Lorentz force. We also show that field variation of the
 depinning current has a single maximum, while field variation of the pinning force inside deep creep mode has
 two maxima. Appearance of two maxima is associated with nonmonotonous field variation of the activation
 energyUpl, which corresponds to plastic vortex creep mediated by motion of the dislocations. The authors dedicate this work to the 80th anniversary
 of A.M. Kosevich whose works in the field of physics of
 real crystals were reflected in the field of vortex solid
 state containing dislocations. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Свеpхпpоводимость, в том числе высокотемпеpатуpная Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal Article published earlier |
| spellingShingle | Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal Bondarenko, A.V. Zavgorodniy, A.A. Lotnik, D.A. Obolenskii, M.A. Vovk, R.V. Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| title | Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal |
| title_full | Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal |
| title_fullStr | Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal |
| title_full_unstemmed | Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal |
| title_short | Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal |
| title_sort | creep and depinning of vortices in nontwinned yba₂cu₃o₆.₈₇ single crystal |
| topic | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| topic_facet | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117334 |
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