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The vortex penetration field of the multilayer coating model with a single superconductor layer and a single insulator layer formed on a bulk superconductor are derived. The same formula can be applied to a model with a superconductor layer…

Accelerator Physics · Physics 2013-07-03 Takayuki Kubo , Yoshihisa Iwashita , Takayuki Saeki

The recent theoretical study on the multilayer-coating model published in Applied Physics Letters [1] is reviewed. Magnetic-field attenuation behavior in a multilayer coating model is different from a semi-infinite superconductor and a…

Accelerator Physics · Physics 2015-02-25 Takayuki Kubo , Yoshihisa Iwashita , Takayuki Saeki

A multilayered structure with a single superconductor layer and a single insulator layer formed on a bulk superconductor is studied. General formulae for the vortex-penetration field of the superconductor layer and the magnetic field on the…

Accelerator Physics · Physics 2014-01-30 Takayuki Kubo , Yoshihisa Iwashita , Takayuki Saeki

An ultrathin superconducting bilayer creates a coreless fractional vortex when only the second layer has a hole. The quantization is broken by the hole, and the normal core disappears. The magnetic flux is no longer confined near the normal…

Superconductivity · Physics 2018-05-10 Y. Tanaka , H. Yamamori , T. Yanagisawa , T. Nishio , S. Arisawa

We study vortex penetration into two-layer structures of superconducting plates under a perpendicular magnetic field. We solve the heat transport equation and the Maxwell equations with the current-voltage relation for superconductor,…

Superconductivity · Physics 2019-02-11 Shinsuke Ooi , Masaru Kato

The interplay between superconductivity and magnetism gives rise to many intriguing and exciting phenomena. In this Letter we report about a novel manifestation of this interplay: a temperature induced phase transition between different…

We measured the critical current of the bilayer Nb/Co in the applied magnetic field. When the magnetic field was tilted to the axis which was perpendicular to the plane of the bilayer we observed a large difference in critical currents…

Superconductivity · Physics 2009-11-13 D. Y. Vodolazov , B. A. Gribkov , A. Yu. Klimov , V. V. Rogov , S. N. Vdovichev

A layered antiferromagnetic superconductor in the mixed state may posses magnetic domains created along the Josephson vortices. This may happen when an external magnetic field is strong enough to flip over magnetic moments, lying in the…

Superconductivity · Physics 2015-05-19 T. Krzyszton

A single vortex overcoming the surface barrier in a mesoscopic superconductor with lateral dimensions of several coherence lengths and thickness of several nanometers provides an ideal platform to study thermal activation of a single…

Superconductivity · Physics 2012-05-01 Shi-Zeng Lin , Takahiro Nishio , Lev N. Bulaevskii , Matthias J. Graf , Yukio Hasegawa

We study the penetration of the nonuniform magnetic field, created by a magnetic dipole with out-of-plane magnetization, into a film heterostructure composed of a type-II superconductor layer and a soft-magnet layer. In the framework of the…

Superconductivity · Physics 2009-11-11 S. V. Yampolskii , G. I. Yampolskaya

In the framework of the London approximation the magnetic flux penetration into a type-II superconductor filament surrounded by a soft-magnet sheath and exposed to a transverse external magnetic field is studied. The lower transverse…

Superconductivity · Physics 2009-11-10 S. V. Yampolskii , Yu. A. Genenko

In the present work we study an anisotropic layered superconducting film of finite thickness. The film surfaces are considered parallel to the $bc$ face of the crystal. The vortex lines are oriented perpendicular to the film surfaces and…

Superconductivity · Physics 2009-10-31 Edson Sardella

Using a known distribution of the Meissner currents over the surface of an infinitely long superconducting slab with a rectangular cross section, we find an applied magnetic field at which vortices begin to penetrate into the…

Superconductivity · Physics 2024-09-10 G. P. Mikitik , Yu. V. Sharlai

Non-reciprocity in the critical current has been observed in a variety of superconducting systems and has been called the superconducting diode effect. The origin underlying the effect depends on the symmetry breaking mechanisms at play. We…

The paper reviews a concept of induced spin-flop domain inside vortices in an antiferromagnetic superconductor. Such phenomenon may occur when an external magnetic field is strong enough to flip over magnetic moments in the core of the…

Superconductivity · Physics 2009-11-07 Tomasz Krzyszton

We investigate the phenomenon of decay of a supercurrent in a superconducting thin film in the absence of an applied magnetic field. The resulting zero-temperature resistance derives from two equally possible mechanisms: 1) quantum…

Superconductivity · Physics 2015-06-25 Roberto Iengo , Giancarlo Jug

Giant vortices with higher phase-winding than $2\pi$ are usually energetically unfavorable, but geometric symmetry constraints on a superconductor in a magnetic field are known to stabilize such objects. Here, we show via microscopic…

Superconductivity · Physics 2018-05-23 Morten Amundsen , Jabir Ali Ouassou , Jacob Linder

We consider the quasiparticle c-axis conductivity in highly anisotropic layered compounds in the presence of the magnetic field parallel to the layers. We show that at low temperatures the quasiparticle interlayer conductivity depends…

Superconductivity · Physics 2011-04-08 L. N. Bulaevskii , M. J. Graf , M. P. Maley

We theoretically investigate the magnetic response on a three-dimensional superconducting nanobridge system, which is compound of two parallel parallelepiped (samples) connected through a nanobridge of size $\mathbf{L}$ and thickness…

Superconductivity · Physics 2024-08-29 C. A. Aguirre , J. Faundez , P. Diaz , D. Laroze , A. S. Mosquera Polo , N. C. Costa , J. Barba-Ortega

We investigate the transport properties of a thin superconducting Al layer covering a square array of magnetic dots with out-of-plane magnetization. A thorough characterization of the magnetic properties of the dots allowed us to fine-tune…

Superconductivity · Physics 2009-11-11 W. Gillijns , A. V. Silhanek , V. V. Moshchalkov
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