STM differential conductance of a disordered extreme type-II superconductor at high magnetic fields

2010 ◽  
Vol 82 (13) ◽  
Author(s):  
Saša Dukan ◽  
Joel Tenenbaum ◽  
Joseph Porembski ◽  
Karl Tata
Keyword(s):  
Magnetic Fields ◽  
Differential Conductance ◽  
High Magnetic Fields ◽  
Type Ii ◽  
Extreme Type ◽  
Type Ii Superconductor

scholarly journals Acoustic attenuation in a type-II superconductor at high magnetic fields

1998 ◽  
Vol 57 (5) ◽  
pp. 3051-3057 ◽  
Author(s):  
G. M. Bruun ◽  
V. Nikos Nicopoulos ◽  
N. F. Johnson
Keyword(s):  
Magnetic Fields ◽  
High Magnetic Fields ◽  
Type Ii ◽  
Acoustic Attenuation ◽  
Type Ii Superconductor

Interfacial studies in Nb3Sn superconductors

1991 ◽  
Vol 49 ◽  
pp. 590-591
Author(s):  
Ernest L. Hall ◽  
Lee E. Rumaner ◽  
Mark G. Benz
Keyword(s):  
Grain Size ◽  
Grain Boundaries ◽  
Flux Pinning ◽  
Size Control ◽  
High Magnetic Fields ◽  
Type Ii ◽  
Reaction Interface ◽  
Liquid Diffusion ◽  
Type Ii Superconductor ◽  
Grain Size Control

The intermetallic compound Nb3Sn is a type-II superconductor of interest because it has high values of critical current density Jc in high magnetic fields. One method of forming this compound involves diffusion of Sn into Nb foil containing small amounts of Zr and O. In order to maintain high values of Jc, it is important to keep the grain size in the Nb3Sn as small as possible, since the grain boundaries act as flux-pinning sites. It has been known for many years that Zr and O were essential to grain size control in this process. In previous work, we have shown that (a) the Sn is transported to the Nb3Sn/Nb interface by liquid diffusion along grain boundaries; (b) the Zr and O form small ZrO2 particles in the Nb3Sn grains; and (c) many very small Nb3Sn grains nucleate from a single Nb grain at the reaction interface. In this paper we report the results of detailed studies of the Nb3Sn/Nb3Sn, Nb3Sn/Nb, and Nb3Sn/ZrO2 interfaces.

scholarly journals Equilibrium properties of superconducting niobium at high magnetic fields: A possible existence of a filamentary state in type-II superconductors

2017 ◽  
Vol 95 (17) ◽  
Author(s):  
V. Kozhevnikov ◽  
A.-M. Valente-Feliciano ◽  
P. J. Curran ◽  
A. Suter ◽  
A. H. Liu ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
High Magnetic Fields ◽  
Type Ii ◽  
Type Ii Superconductors

Spatially indirect photoluminescence of ZnSe/BeTe type II quantum wells in pulsed high magnetic fields

2009 ◽  
Vol 6 (1) ◽  
pp. 38-41 ◽  
Author(s):  
Shojiro Takeyama ◽  
Rui Shen ◽  
Yohei Enya ◽  
Eiji Kojima ◽  
Hirofumi Mino ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Quantum Wells ◽  
High Magnetic Fields ◽  
Type Ii ◽  
Type Ii Quantum Wells

SUPERCONDUCTIVITY IN HIGH AND VERY HIGH MAGNETIC FIELDS

1991 ◽  
Vol 05 (01n02) ◽  
pp. 353-363 ◽  
Author(s):  
Zlatko Tešanović
Keyword(s):  
Magnetic Fields ◽  
Order Parameter ◽  
Landau Levels ◽  
High Magnetic Fields ◽  
Type Ii ◽  
Type Ii Superconductors ◽  
Low Field ◽  
Starting Point ◽  
Electronic Motion ◽  
Very High

An external magnetic field can actually enhance superconductivity, pro vided it is strong enough. If only few lowest Landau levels are occupied, the quasi 1D nature of the electronic motion leads to an enhancement of transition temperature. The orbital frustration of the order parameter is much simplified in this limit. This limit of superconductivity, of great interest in itself, can also be used as a starting point to study orbital frustration in familiar, “low-field”, strongly type II superconductors. I briefly review some of the characteristics of superconductivity in high magnetic fields.

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