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Analytical solutions of the microscopic two-band theory for the temperature dependence of the upper critical fields of pure MgB2 compared with experimental data
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10.1063/1.3610174
/content/aip/journal/ltp/37/6/10.1063/1.3610174
http://aip.metastore.ingenta.com/content/aip/journal/ltp/37/6/10.1063/1.3610174
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Resistive transitions at different magnetic fields parallel to the surface of a c-axis oriented MgB2 film grown on c-plane sapphire.

Image of FIG. 2.
FIG. 2.

Resistive transitions at different magnetic fields perpendicular to the surface of a c-axis oriented MgB2 film grown on c-plane sapphire.

Image of FIG. 3.
FIG. 3.

X-ray diffraction pattern of an MgB2 film grown on a c-plane sapphire substrate.

Image of FIG. 4.
FIG. 4.

Temperature dependences of the upper critical fields μ0 Hc 2 (T)||ab-plane and μ0 Hc 2 (T)||c-axis of an MgB2 film grown on a c-plane sapphire substrate with Tc  = 36.5 K. The experimental data are indicated as points. The theoretical results are plotted as dashed curves.

Image of FIG. 5.
FIG. 5.

The temperature dependences of the upper critical fields μ0 Hc 2 (T)||ab-plane and μ0 Hc 2 (T)||c-axis of an MgB2 single crystal with Tc  = 37.5 K obtained from magnetization measurements (Ref. 42) are shown as data points. The theoretical results are plotted as dashed curves. The range of temperatures near Tc is enlarged in the inset.

Image of FIG. 6.
FIG. 6.

Comparison of μ0 Hc 2 (T)||ab-plane for a c-axis oriented MgB2 film with Tc  = 36.5 K (circles) with μ0 Hc 2 (T)||ab-plane for an MgB2 single crystal (Ref. 42) with Tc  = 37.5 K (triangles).

Image of FIG. 7.
FIG. 7.

Comparison of measured μ0 Hc 2 (T)||c-axis for a c-axis oriented MgB2 film with Tc  = 36.5 K (circles) and μ0 Hc 2 (T)||c-axis for an MgB2 single crystal (Ref. 42) with Tc  = 37.5 K (triangles).

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/content/aip/journal/ltp/37/6/10.1063/1.3610174
2011-08-10
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Analytical solutions of the microscopic two-band theory for the temperature dependence of the upper critical fields of pure MgB2 compared with experimental data
http://aip.metastore.ingenta.com/content/aip/journal/ltp/37/6/10.1063/1.3610174
10.1063/1.3610174
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