The microscopic theory of the upper critical field Hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). Application to MgB2
The microscopic superconductivity theory in 2 systems in the magnetic fields directed parallel and perpendicular to the plane (ab) is built. The two energy bands of different dimensions overlapping on the Fermi surface (two-dimensional σ - band and three- dimensional π -band) are taken into ac...
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D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2008
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oai:doaj.org-article:cd541856fa0f4d52be96fe40c980ca1b2021-11-21T12:06:35ZThe microscopic theory of the upper critical field Hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). Application to MgB22537-63651810-648Xhttps://doaj.org/article/cd541856fa0f4d52be96fe40c980ca1b2008-07-01T00:00:00Zhttps://mjps.nanotech.md/archive/2008/article/3898https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365The microscopic superconductivity theory in 2 systems in the magnetic fields directed parallel and perpendicular to the plane (ab) is built. The two energy bands of different dimensions overlapping on the Fermi surface (two-dimensional σ - band and three- dimensional π -band) are taken into account. The theory is built taking into account the weak dispersion of the electron energy of σ -band in z direction. The systems of equations for the superconductive transition temperature c T and the upper critical field ()0 2 ab c H are obtained. The analytic solutions of the equations for ()0 2 ab c H are found in the two temperature areas: nearby the zero temperature 0 c TT Palistrant, MariaCebotari, IrinaUrsu, VasileD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 7, Iss 3, Pp 292-311 (2008) |
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DOAJ |
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DOAJ |
| language |
EN |
| topic |
Physics QC1-999 Electronics TK7800-8360 |
| spellingShingle |
Physics QC1-999 Electronics TK7800-8360 Palistrant, Maria Cebotari, Irina Ursu, Vasile The microscopic theory of the upper critical field Hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). Application to MgB2 |
| description |
The microscopic superconductivity theory in 2 systems in the magnetic fields directed parallel and perpendicular to the plane (ab) is built. The two energy bands of different
dimensions overlapping on the Fermi surface (two-dimensional σ - band and three-
dimensional π -band) are taken into account. The theory is built taking into account the weak
dispersion of the electron energy of σ -band in z direction.
The systems of equations for the superconductive transition temperature c T and the upper critical field
()0
2
ab
c H are obtained. The analytic solutions of the equations for
()0
2
ab
c H are found in the two temperature areas: nearby the zero temperature 0
c TT |
| format |
article |
| author |
Palistrant, Maria Cebotari, Irina Ursu, Vasile |
| author_facet |
Palistrant, Maria Cebotari, Irina Ursu, Vasile |
| author_sort |
Palistrant, Maria |
| title |
The microscopic theory of the upper critical field Hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). Application to MgB2 |
| title_short |
The microscopic theory of the upper critical field Hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). Application to MgB2 |
| title_full |
The microscopic theory of the upper critical field Hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). Application to MgB2 |
| title_fullStr |
The microscopic theory of the upper critical field Hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). Application to MgB2 |
| title_full_unstemmed |
The microscopic theory of the upper critical field Hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). Application to MgB2 |
| title_sort |
microscopic theory of the upper critical field hc2 in two-band systems in the magnetic field directed parallel and perpendicular to the plane (ab). application to mgb2 |
| publisher |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies |
| publishDate |
2008 |
| url |
https://doaj.org/article/cd541856fa0f4d52be96fe40c980ca1b |
| work_keys_str_mv |
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