Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Vladimir G. Kogan"'
Autor:
Hyunsoo Kim, Kyuil Cho, Makariy A. Tanatar, Valentin Taufour, Stella K. Kim, Sergey L. Bud’ko, Paul C. Canfield, Vladimir G. Kogan, Ruslan Prozorov
Publikováno v:
Symmetry, Vol 11, Iss 8, p 1012 (2019)
A self-consistent two-gap γ -model is used to quantitatively describe several thermodynamic properties of MgB 2 superconductor. The superconducting coupling matrix, ν i j , was obtained from the fitting of the superfluid density in the entire super
Externí odkaz:
https://doaj.org/article/e63283665a2547ffb1e1967d32a73a69
Publikováno v:
Physical Review B. 104
The magnetic field of vortices in anisotropic superconducting films is considered in the framework of anisotropic London approach. It is found that at distances large relative to the core size, the magnetic field normal to the film surface may change
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f30c300dc07b3689ab859a98f229d98
https://doi.org/10.1103/physrevb.104.144512
https://doi.org/10.1103/physrevb.104.144512
Autor:
N. Nakagawa, Vladimir G. Kogan
Publikováno v:
Physical Review B. 104
The magnetic field of moving vortices in anisotropic superconductors is considered in the framework of time-dependent London approach. It is found that at distances large relative to the core size, the field may change sign that alludes to a non-triv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ba1bdde018e0bef75b5537f2344b0a1
https://doi.org/10.1103/physrevb.104.094523
https://doi.org/10.1103/physrevb.104.094523
Autor:
Vladimir G. Kogan, Norio Nakagawa
Publikováno v:
Condensed Matter, Vol 6, Iss 4, p 4 (2021)
Condensed Matter
Volume 6
Issue 1
Condensed Matter
Volume 6
Issue 1
The magnetic field hz of a moving Pearl vortex in a superconducting thin-film in (x,y) plane is studied with the help of the time-dependent London equation. It is found that for a vortex at the origin moving in +x direction, hz(x,y) is suppressed in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2857934e4abc5d94c8cb0d6eb90c4307
https://www.mdpi.com/2410-3896/6/1/4
https://www.mdpi.com/2410-3896/6/1/4
Autor:
Norio Nakagawa, Vladimir G. Kogan
We take account of normal currents that emerge when vortices move. Moving Abrikosov vortices in the bulk and Pearl vortices in thin films are considered. Velocity dependent distributions of both normal and persistent currents are studied in the frame
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e692603d31c856e45f6429bdade8b0ba
Autor:
Vladimir G. Kogan, Ruslan Prozorov
We study the effects of anisotropic order parameters on the temperature dependence of London penetration depth anisotropy ${\ensuremath{\gamma}}_{\ensuremath{\lambda}}(T)$. After ${\mathrm{MgB}}_{2}$, this dependence is commonly attributed to distinc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97f1ebf88b0e2a4b548cca83d1604692
http://arxiv.org/abs/2011.12412
http://arxiv.org/abs/2011.12412
Autor:
Ruslan Prozorov, Vladimir G. Kogan
Publikováno v:
Physical Review B. 102
The anisotropic London equations taking into account the normal currents are derived and applied to the problem of the surface impedance in the Meissner state of anisotropic materials. It is shown that the complex susceptibility of the anisotropic sl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ae8f2990c912e3d4b5d98a4f8290420
https://doi.org/10.1103/physrevb.102.184514
https://doi.org/10.1103/physrevb.102.184514
Autor:
Sergey L. Bud'ko, Gediminas Simutis, Paul C. Canfield, Tatyana Shevtsova, Mingyu Xu, Yurii G. Pashkevich, Rustem Khasanov, William R. Meier, Vladimir G. Kogan
Publikováno v:
Physical Review B. 102
The magnetic response of $\mathrm{Ca}\mathrm{K}{({\mathrm{Fe}}_{0.949}{\mathrm{Ni}}_{0.051})}_{4}{\mathrm{As}}_{4}$ was investigated by means of the muon spin rotation/relaxation. The long-range commensurate magnetic order sets in below the N\'eel te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f72237783e1aef24b78614c321be0f3
https://doi.org/10.1103/physrevb.102.094504
https://doi.org/10.1103/physrevb.102.094504
Autor:
Ruslan Prozorov, Vladimir G. Kogan
The self-energy of a moving vortex is shown to decrease with increasing velocity. The interaction energy of two parallel slowly moving vortices differs from the static case by a small term $\ensuremath{\propto}{v}^{2}$; the ``slow'' motion is defined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e0c4b2220be96af55d96212a384ca39
http://arxiv.org/abs/2004.03663
http://arxiv.org/abs/2004.03663
A simple relation is established between the zero-$T$ penetration depth $\ensuremath{\lambda}(0)$ and the slope of ${\ensuremath{\lambda}}^{\ensuremath{-}2}(T)$ near ${T}_{c}$, similar to Helfand-Werthamer's relation for ${H}_{c2}(0)$ and the slope o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be4916ac80a0eb82dbcb8df426af9d55
http://arxiv.org/abs/2001.08858
http://arxiv.org/abs/2001.08858