Results 31 to 40 of about 48,345 (314)

Feedback effects in superconductors [PDF]

Physical Review B, 1994
We calculate corrections to the BCS gap equation caused by the interaction of electrons with the collective phase and amplitude modes in the superconducting state. This feedback reduces the BCS gap parameter, $Δ$, and leaves the critical temperature, $T_c$, unchanged.
Gherghetta, Tony, Nambu, Yoichiro
openaire   +3 more sources

Growth rate and superconducting properties of Gd-Ba-Cu-O bulk superconductors melt processed in air

, 2007
A generic Mg-doped Nd-Ba-Cu-O seed crystal has been developed recently for the fabrication of any type of rare earth (RE) based (RE)-Ba-Cu-O single grain bulk superconductor in air. The new generic seed simplifies significantly the top seeded melt growth
Cardwell, DA, Iida, K, Shi, Y, Hari Babu, N   +3 more
core   +1 more source

Dynamical Hall responses of disordered superconductors

, 2023
We extend the Mattis-Bardeen theory for the dynamical response of superconductors to include different types of Hall responses. This is possible thanks to a recent modification of the quasiclassical Usadel equation, which allows for analyzing Hall ...
Heikkilä, T. T., Heikkilä, Tero T., Bergeret, F. Sebastián, Hijano, Alberto, Virtanen, Pauli, Vosoughi-nia, Sakineh   +5 more
core   +1 more source

PAIRING IN INHOMOGENEOUS SUPERCONDUCTORS [PDF]

International Journal of Modern Physics B, 2000
Starting from a t-J model, we introduce inhomogenoeus terms to mimic stripes. We find that if the inhomogeneous terms break the SU(2) spin symmetry the binding between holes is tremendously enhanced in the thermodynamic limit. In any other model (including homogeneous models) the binind in the thermodynamic limit is small or neglible.
Eroles, J., Ortiz, G., Balatsky, Alexander V., Bishop, A. R.   +3 more
openaire   +3 more sources

Neutron diffraction and reflection studies of superconductors

, 1998
I have studied two magnetic properties of superconductors using different neutron scattering techniques. Due to their magnetic moment and lack of electrical charge, neutrons can provide an extremely sensitive probe into magnetism on a small scale ...
Reynolds, John M., Reynolds, John M. (John Melton)   +1 more
core   +1 more source

Magneto-thermal switching using superconducting metals and alloys

Science and Technology of Advanced Materials
Superconductors exhibit low thermal conductivity (κ) due to the suppression of electronic thermal conduction in the superconducting states with Cooper pairs. This change in κ enables superconductors to function as magneto-thermal switches (MTS).
Hiroto Arima, Takumi Murakami, Poonam Rani, Yoshikazu Mizuguchi   +3 more
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

On the Lawrence–Doniach and Anisotropic Ginzburg–Landau Models for Layered Superconductors

, 1995
The authors consider two models, the Lawrence-Doniach and the anisotropic Ginzburg-Landau models for layered superconductors such as the recently discovered high-temperature superconductors.
Chapman, S. J., Du, Qiang, DU, Q, CHAPMAN, S, Gunzburger, Max D, GUNZBURGER, M   +5 more
core   +1 more source

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

Advanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut, Pierre Le Berre, Hamdi Jaballah, Lukas Fink, Victor Poline, Richard Haettel, Stéphane Grenier, Gilbert Chahine, Ewen Bellec, Guillaume Buatier, Wilfried Hortschitz, Santa Pile, Thomas Schrefl, Nils Blanc, Yuan Hong, Thibaut Devillers, Nora M. Dempsey   +16 more
wiley   +1 more source

Microscopic characterization of the superconducting thin films of the (Cu1-xCx)Ba2Can-1CunOy on LaAlO3 substrate

Materials Research Express
The cuprate superconductors with transition temperature over 100 K are mainly Hg-based, Tl-based, Bi-based and Cu-based. The transition temperature of the Cu-based superconductor (Cu _1-x C _x )Ba _2 Ca _3 Cu _4 O _y reaches up to 117 K, while exhibiting
Ping Zhu, Yanqun Guo, Zhigang Zeng, Zhihang Xu, Ruoxian Sun, Zhiyong Liu, Chuanbing Cai   +6 more
doaj   +1 more source