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Magnetic properties of layered high temperature superconductors with a weak interlayer coupling in the region of the critical fluctuations are investigated in the framework of the Ginzburg--Landau approach. The sample magnetization is…

Superconductivity · Physics 2007-05-23 Gregory M. Braverman

The design of superconducting applications containing windings of superconducting wires or tapes requires electro-thermal quench modelling. In this article, we present a reliable numerical method based on a variational principle and we…

Applied Physics · Physics 2025-02-18 Enric Pardo , Anang Dadhich

Superconductivity in high temperature superconductors is achieved by introducing charge carriers into cuprate insulators containing CuO$_2$ planes. Perturbation in these CuO$_2$ planes suppresses superconductivity by strongly affecting the…

Superconductivity · Physics 2007-05-23 Subhasis Ghosh , Niladri Sarkar

A theoretical model for tunneling spectroscopy employing tight-binding band structure, d-wave gap symmetry, group velocity, and tunneling directionality can exhibit a wide range of characteristics similar to the ones found in tunneling…

Superconductivity · Physics 2008-02-03 Z. Yusof , J. F. Zasadzinski , L. Coffey

We use inelastic neutron scattering to probe magnetic excitations of an optimally electron-doped superconductor Nd$_{1.85}$Ce$_{0.15}$CuO$_{4-\delta}$ above and below its superconducting transition temperature $T_c=25$ K. In addition to…

Superconductivity · Physics 2009-11-13 Jun Zhao , Pengcheng Dai , Shiliang Li , Paul G. Freeman , Y. Onose , Y. Tokura

A prevailing description of the stripe phase in underdoped cuprate superconductors is that the charge carriers (holes) phase segregate on a microscopic scale into hole rich and hole poor regions. We report resonant elastic x-ray scattering…

Superconductivity · Physics 2013-01-08 A. J. Achkar , F. He , R. Sutarto , J. Geck , H. Zhang , Y. -J. Kim , D. G. Hawthorn

Some of the highest-transition-temperature superconductors across various materials classes exhibit linear-in-temperature `strange metal' or `Planckian' electrical resistivities in their normal state. It is thus believed by many that this…

Superconductivity · Physics 2021-07-22 D. H. Nguyen , A. Sidorenko , M. Taupin , G. Knebel , G. Lapertot , E. Schuberth , S. Paschen

The time-dependent Ginzburg-Landau approach is used to calculate the complex fluctuation conductivity in layered type-II superconductor under magnetic field. Layered structure of the superconductor is accounted for by means of the…

Superconductivity · Physics 2014-03-21 B. D. Tinh , L. M. Thu , L. V. Hoa

Due to their proximity to an antiferromagnetic phase and to the mysterious pseudogap, underdoped cuprates have attracted great interest in the high Tc community for many years. A central issue concerns the role of quantum and thermal…

Superconductivity · Physics 2011-09-22 Jie Yong , M. Hinton , A. McCray , M. Randeria , M. Naamneh , A. Kanigel , T. R. Lemberger

This work investigates two physics-based models that simulate the non-linear partial differential algebraic equations describing an electric double layer supercapacitor. In one model the linear dependence between electrolyte concentration…

Systems and Control · Computer Science 2014-12-09 Ross Drummond , David A. Howey , Stephen R. Duncan

We present a time-domain analysis of carrier dynamics in a semiconductor superlattice with two minibands. Integration of the density-matrix equations of motion reveals a number of new features: (i) for certain values of the applied static…

Condensed Matter · Physics 2009-10-22 J. Rotvig , A. P. Jauho , H. Smith

The short wavelength cutoff has been introduced in the calculation of ac fluctuation conductivity of superconductors. It is shown that a finite cutoff leads to a breakdown of the scaling property in frequency and temperature. Also, it…

Superconductivity · Physics 2009-11-07 D. -N. Peligrad , A. Dulcic , M. Mehring

The effect of the lattice periodic potential on superconductivity which was ignored by BCS theory has been investigated. According to the effective mass approximation of band theory, the effect of lattice periodic potential can be embodied…

Superconductivity · Physics 2007-05-23 Zhongqing Wu , Xuanjia Zhang

The interplay among various collective electronic states such as superconductivity (SC) and charge density wave (CDW) is of tremendous significance in low-dimensional transition metal dichalcogenides. Thus far, a consensus on the…

Most approaches for self-supervised learning (SSL) are optimised on curated balanced datasets, e.g. ImageNet, despite the fact that natural data usually exhibits long-tail distributions. In this paper, we analyse the behaviour of one of the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Anna Kukleva , Moritz Böhle , Bernt Schiele , Hilde Kuehne , Christian Rupprecht

The tunneling spectra of the electron-doped cuprate Pr_2-xCe_xCuO4 as a function of doping and temperature is reported. We find that the superconducting gap, delta, shows a BCS-like temperature dependence even for extremely low carrier…

Superconductivity · Physics 2010-03-26 I. Diamant , R. L. Greene , Y. Dagan

By employing a series of experimental techniques, we provide clear evidence that CaPtAs represents a rare example of a noncentrosymmetric superconductor which simultaneously exhibits nodes in the superconducting gap and broken time-reversal…

Superconductivity in the cuprates is characterized by spatial inhomogeneity and an anisotropic electronic gap of d-wave symmetry. The aim of this work is to understand how this anisotropy affects the non-equilibrium electronic response of…

We give a new expression for the supercurrent and its conservation in curved ${\cal N}=1$, $D=4$ superspace using the superconformal approach. The first component of the superfield, whose lowest component is the vector auxiliary field gives…

High Energy Physics - Theory · Physics 2017-09-13 Sergio Ferrara , Marine Samsonyan , Magnus Tournoy , Antoine Van Proeyen

Impedance measurement is a common technique to characterize and detect the electrical properties of biological cells. However, to decode the underlying physical processes, it requires complex electrical models alongside prior knowledge of…

Instrumentation and Detectors · Physics 2020-12-02 Roberto G. Ramírez-Chavarría , Celia Sánchez-Pérez , Luisa Romero-Ornelas , Eva Ramón-Gallegos
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