scholarly journals High-field superconducting phase diagrams including Fulde-Ferrell-Larkin-Ovchinnikov vortex states

2007 ◽  
Vol 76 (13) ◽  
Author(s):  
Ryusuke Ikeda
Keyword(s):  
Phase Diagrams ◽  
High Field ◽  
Superconducting Phase ◽  
Vortex States

scholarly journals Expansion of the high field-boosted superconductivity in UTe2 under pressure

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Sheng Ran ◽  
Shanta R. Saha ◽  
I-Lin Liu ◽  
David Graf ◽  
Johnpierre Paglione ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Field ◽  
Superconducting Phase ◽  
High Symmetry ◽  
First Order ◽  
Superconducting Phases ◽  
Quantum Phenomenon ◽  
Zero Resistance ◽  
Spin Triplet ◽  
The Magnetic Field

AbstractMagnetic field-induced superconductivity is a fascinating quantum phenomenon, whose origin is yet to be fully understood. The recently discovered spin-triplet superconductor, UTe2, exhibits two such superconducting phases, with the second one reentering in the magnetic field of 45 T and persisting up to 65 T. More surprisingly, in order to induce this superconducting phase, the magnetic field has to be applied in a special angle range, not along any high symmetry crystalline direction. Here we investigated the evolution of this high-field-induced superconducting phase under pressure. Two superconducting phases merge together under pressure, and the zero resistance persists up to 45 T, the field limit of the current study. We also reveal that the high-field-induced superconducting phase is completely decoupled from the first-order field-polarized phase transition, different from the previously known example of field-induced superconductivity in URhGe, indicating superconductivity boosted by a different paring mechanism.

scholarly journals Magnetic and superconducting phase diagrams in ErNi2B2C

2012 ◽  
Vol 152 (12) ◽  
pp. 1076-1079 ◽  
Author(s):  
J.A. Galvis ◽  
M. Crespo ◽  
I. Guillamón ◽  
H. Suderow ◽  
S. Vieira ◽  
...  
Keyword(s):  
Phase Diagrams ◽  
Superconducting Phase

A tin whisker with two independent superconducting phase diagrams

1971 ◽  
Vol 5 (6) ◽  
pp. 665-681 ◽  
Author(s):  
B. D. Rothberg ◽  
F. R. N. Nabarro ◽  
D. S. McLachlan
Keyword(s):  
Phase Diagrams ◽  
Superconducting Phase ◽  
Tin Whisker

Vortex Configurations in Mesoscopic Superconducting Nanowires

2003 ◽  
Vol 17 (10n12) ◽  
pp. 537-547 ◽  
Author(s):  
G. Stenuit ◽  
S. Michotte ◽  
J. Govaerts ◽  
L. Piraux ◽  
D. Bertrand
Keyword(s):  
Magnetic Properties ◽  
Phase Diagrams ◽  
Magnetization Curves ◽  
Winding Number ◽  
Superconducting Nanowires ◽  
Ginzburg Landau ◽  
Landau Model ◽  
Vortex States ◽  
Mesoscopic Superconductors ◽  
Giant Vortex

Beyond the well-known Abrikosov and giant vortex configurations, new solutions to the Ginzburg–Landau model corresponding to vortices of integer and half-integer winding number are described. Phase diagrams (Bext, Energy) and magnetization curves have been determined, aiming towards an understanding of the magnetic properties of lead nanowires and the possible consequences of such solutions with respect to the switching mechanism between vortex states in mesoscopic superconductors.

scholarly journals Vortex Dynamics and Superconducting Phase Diagrams in Ta x Ge 1-x / Ge Multilayers with Coplanar Defects

2021 ◽  
Author(s):  
◽  
Andreas Engel
Keyword(s):  
Low Temperature ◽  
Magnetic Fields ◽  
Phase Diagrams ◽  
Glass Phase ◽  
High Vacuum ◽  
Strong Support ◽  
Superconducting Phase ◽  
Field Orientation ◽  
Current Voltage ◽  
Zero Resistance

<p>The superconducting phase diagrams of amorphous multilayered Ta x Ge 1-x / Ge thin films have been studied over a large range of temperatures and magnetic fields by means of dc electrical transport measurements. These superconducting films belong to the class of extremely type-II superconductors, for which a multitude of superconducting phases has been predicted and experimentally verified. A thorough understanding of these phase diagrams is indispensable for future successful applications of high-temperature superconductors since some of the observed phases severely limit the zero-resistance current-carrying capacity of these materials. The Ta x Ge 1-x / Ge films in this study were prepared by vapour deposition under high vacuum conditions. The Ta-content varied between x = 0.31 and 0.37 and individual layer thicknesses ranged from about 3 to 15 nm. Tilting the sample substrates during the deposition resulted in coplanar defects with variable orientation and structure depending on the tilting angle. This way it was possible to study the interplay between magnetic flux lines and the material structure and defect morphology, respectively. Films with thin insulating Ge layers and thus strong interlayer coupling showed three dimensional behaviour over the complete range of fields and temperatures. The coplanar defect structure was able to extend the zero-resistance phase to significantly higher fields and temperatures for magnetic fields co-aligned with the defects. Strong support for the existence of a low-temperature glass phase was found in the case of aligned and misaligned magnetic fields. Increasing the insulating layer thickness lead to a cross-over to 2D behaviour depending on temperature and field as well as field orientation with respect to the defects. In the 2D phase regions the low-temperature zero-resistance glass phase may have disappeared entirely. Current-voltage characteristics measured in the low-temperature glass phases showed significant differences between the strongly and weakly coupled films. However the detailed temperature and field dependence of these current-voltage curves at low temperatures cannot be explained satisfactorily with existing theoretical models.</p>

High-field orientational magnetic phase diagrams of the mixed holmium–yttrium iron garnet Ho0.43Y2.57Fe5O12

2008 ◽  
Vol 20 (29) ◽  
pp. 295231 ◽  
Author(s):  
A Bouguerra ◽  
G Fillion ◽  
S de Brion ◽  
S Khène ◽  
P Wolfers ◽  
...  
Keyword(s):  
Phase Diagrams ◽  
Yttrium Iron Garnet ◽  
High Field ◽  
Magnetic Phase ◽  
Yttrium Iron ◽  
Iron Garnet ◽  
Magnetic Phase Diagrams
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