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Iron-based superconductors have received much attention as a new family of high-temperature superconductors owing to their unique properties and distinct differences from cuprates and conventional superconductors. This paper reviews…

Superconductivity · Physics 2011-12-30 Hidenori Hiramatsu , Takayoshi Katase , Toshio Kamiya , Hideo Hosono

The magnetic structure of neutron vortices in the superfluid cores of neutron stars is determined assuming that the proton condensate forms a type I superconductor. It is shown that the entrainment currents induced by the neutron vortex…

Astrophysics · Physics 2015-06-24 D. M. Sedrakian , A. Sedrakian , G. F. Zharkov

Recent theoretical analysis of spatially-nonuniform modes of the thermomagnetic instability in superconductors [Phys. Rev. B 70, 224502 (2004)] is generalized to the case of a thin film in a perpendicular applied field. We solve the thermal…

Superconductivity · Physics 2009-11-11 D. V. Denisov , A. L. Rakhmanov , D. V. Shantsev , Y. M. Galperin , T. H. Johansen

We report on the structural and magnetic properties of single and double atomic layers of Mn on a clean and unreconstructed Nb(110) substrate. Low-temperature scanning tunneling spectroscopy measurements reveal a proximity-induced…

We report observations of unusual normal-state electronic conduction properties and superconducting characteristics of high-quality CoSi$_2$/Si films grown on silicon Si(100) and Si(111) substrates. A good understanding of these features…

Quantitative magneto-optical imaging of a type-II superconductor thin film cooled under zero, homogeneous, and inhomogeneous applied magnetic fields, indicates that the latter procedure leads to an enhancement of the screening capacity.…

Superconducting MgB2 thin films were prepared on 50-micrometer-thick, flexible polyamide Kapton-E foils by vacuum co-deposition of Mg and B precursors with nominal thickness of about 100 nm and a special ex-situ rapid annealing process in…

Superconductivity · Physics 2009-11-07 P. Kus , A. Plecenik , L. Satrapinsky , Y. Xu , R. Sobolewski

The electronic structure of the superconducting surface sheath in a type-II superconductor in magnetic fields $H_{c2}<H<H_{c3}$ is calculated self-consistently using the Bogoliubov-de Gennes equations. We find that the pair potential…

Condensed Matter · Physics 2009-10-22 Robert J. Troy , Alan T. Dorsey

Superconductivity is among the most fascinating and well-studied quantum states of matter. Despite over 100 years of research, a detailed understanding of how features of the normal-state electronic structure determine superconducting…

In a Type II superconductor, the vortex core behaves like a normal metal. Consequently, the single-particle density of states in the vortex core of a conventional Type II superconductor remains either flat or (for very clean single…

Superconductivity · Physics 2021-06-23 Surajit Dutta , Indranil Roy , John Jesudasan , Subir Sachdev , Pratap Raychaudhuri

We develop a fast numerical procedure for analysis of nonlinear and nonlocal electrodynamics of type-II superconducting films in transverse magnetic fields taking into account realistic boundary conditions. Using this procedure we explore…

Superconductivity · Physics 2015-05-20 J. I. Vestgarden , D. V. Shantsev , Y. M. Galperin , T. H. Johansen

We show that a thin superconductor slab illuminated by a desired pattern of light behaves as a completely controllable two-dimensional photonic media that could be applied in a wide range of optical devices. In this case, the permittivity…

Superconductivity · Physics 2012-05-15 Hamed Kamrani , Mohammad Saeed Sharif Azadeh , Alireza Kokabi , Mehdi Fardmanesh

We report a comprehensive study of the complex AC conductivity of thin effectively 2D amorphous superconducting InO_x films at zero applied field. Below a temperature scale T_c0 where the superconducting order parameter amplitude becomes…

Superconductivity · Physics 2010-09-16 R. W. Crane , N. P. Armitage , A. Johansson , G. Sambandamurthy , D. Shahar , G. Gruner

We obtain the vortex configurations, the matching fields and the magnetization of a superconducting film with a finite cross section. The applied magnetic field is normal to this cross section, and we use London theory to calculate many of…

Superconductivity · Physics 2009-10-31 Edson Sardella , M. M. Doria , P. R. S. Netto

Recently it was discovered that the non-uniform Meissner current flowing around the pinning sites in the type-II superconductor induces the unconventional vortex-antivortex pairs with the non-quantized magnetic flux [J.-Y. Ge, et al., Nat.…

Superconductivity · Physics 2016-06-06 S. Mironov , Zh. Devizorova , A. Clergerie , A. Buzdin

Using the highly inhomogeneous fields of a magnetic substrate, tunable junctions between superconducting and normal state regions were created inside a thin film superconductor. The investigation of these junctions, created in the same…

Superconductivity · Physics 2009-09-29 J. Fritzsche , R. B. G. Kramer , V. V. Moshchalkov

The pairing temperature of superconducting thin films is expected to display, within the Bardeen-Cooper-Schrieffer theory, oscillations as a function of the film thickness. We show that the pattern of these oscillations switches between two…

Superconductivity · Physics 2020-08-27 D. Valentinis , C. Berthod

We demonstrate that films of unconventional (d-wave) superconductor at temperatures $T\lesssim 0.43 T_c$ can exhibit unusual superconducting phases. The new ground states beside the broken gauge and the point group symmetries can…

Superconductivity · Physics 2009-04-30 A. B. Vorontsov

A nonuniform in-plane Zeeman field can induce spontaneous supercurrents of spin-orbit coupled electrons in superconducting two-dimensional systems and thin films. In this work it is shown that current vortices can be created at the ends of…

Superconductivity · Physics 2020-10-09 A. G. Mal'shukov

Near the superconductor-insulator (S-I) transition, quench-condensed ultrathin Be films show a large magnetoconductance which is highly anisotropic in the direction of the applied field. Film conductance can drop as much as seven orders of…

Disordered Systems and Neural Networks · Physics 2009-10-31 E. Bielejec , J. Ruan , Wenhao Wu