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Critical field of 2H-NbSe2 down to 50mK.

Nader A, Monceau P - Springerplus (2014)

Bottom Line: Variations are almost linear down to 1 K, with a little upward curvature, and the slope of H c 2⊥ (T) decreases below 1 K.The reduced critical field extrapolates to 0.9 when the temperature approaches zero, higher than the WHH upper limit of 0.69 conformably with the extension of this model for anisotropic superconductors.Variations are the same as expected for a 3D-anisotrpic superconductor and the anisotropy value confirms previous results.

View Article: PubMed Central - PubMed

Affiliation: Atomic Energy Commission of Syria, Department of Physics, P.O Box 6091, Damascus, Syria.

ABSTRACT
Critical field of 2H-NbSe2 is determined for the field perpendicular to the conducting planes down to 50 mK, by magnetoresistance measurements. It is the first time that such a measurement is extended below 1 K. Variations are almost linear down to 1 K, with a little upward curvature, and the slope of H c 2⊥ (T) decreases below 1 K. The reduced critical field extrapolates to 0.9 when the temperature approaches zero, higher than the WHH upper limit of 0.69 conformably with the extension of this model for anisotropic superconductors. Angular dependence of the critical field is also determined at 5.5 K. Variations are the same as expected for a 3D-anisotrpic superconductor and the anisotropy value confirms previous results.

No MeSH data available.


Related in: MedlinePlus

The superconducting transition of 2H-NbSe2. Tc was taken at half height of normal state resistance.
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Fig1: The superconducting transition of 2H-NbSe2. Tc was taken at half height of normal state resistance.

Mentions: Our best sample, of the sharpest transition has a critical temperature at half height of normal state resistance of 7.0 K, with a transition width of about 0.8 K, as shown in Figure 1.Figure 1


Critical field of 2H-NbSe2 down to 50mK.

Nader A, Monceau P - Springerplus (2014)

The superconducting transition of 2H-NbSe2. Tc was taken at half height of normal state resistance.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4320156&req=5

Fig1: The superconducting transition of 2H-NbSe2. Tc was taken at half height of normal state resistance.
Mentions: Our best sample, of the sharpest transition has a critical temperature at half height of normal state resistance of 7.0 K, with a transition width of about 0.8 K, as shown in Figure 1.Figure 1

Bottom Line: Variations are almost linear down to 1 K, with a little upward curvature, and the slope of H c 2⊥ (T) decreases below 1 K.The reduced critical field extrapolates to 0.9 when the temperature approaches zero, higher than the WHH upper limit of 0.69 conformably with the extension of this model for anisotropic superconductors.Variations are the same as expected for a 3D-anisotrpic superconductor and the anisotropy value confirms previous results.

View Article: PubMed Central - PubMed

Affiliation: Atomic Energy Commission of Syria, Department of Physics, P.O Box 6091, Damascus, Syria.

ABSTRACT
Critical field of 2H-NbSe2 is determined for the field perpendicular to the conducting planes down to 50 mK, by magnetoresistance measurements. It is the first time that such a measurement is extended below 1 K. Variations are almost linear down to 1 K, with a little upward curvature, and the slope of H c 2⊥ (T) decreases below 1 K. The reduced critical field extrapolates to 0.9 when the temperature approaches zero, higher than the WHH upper limit of 0.69 conformably with the extension of this model for anisotropic superconductors. Angular dependence of the critical field is also determined at 5.5 K. Variations are the same as expected for a 3D-anisotrpic superconductor and the anisotropy value confirms previous results.

No MeSH data available.


Related in: MedlinePlus