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We formulate a quantitative theory of non-local electron transport in three-terminal disordered ferromagnet-superconductor-ferromagnet structures. We demonstrate that magnetic effects have different implications: While strong exchange field…

Superconductivity · Physics 2010-07-29 Mikhail S. Kalenkov , Andrei D. Zaikin

We show that, under certain conditions, the low temperature behavior of the magnetic penetration depth $\lambda(T)$ of a pure d-wave superconductor is determined by nonlocal electrodynamics and, contrary to the general belief, the deviation…

Superconductivity · Physics 2009-10-30 Ioan Kosztin , Anthony J. Leggett

Neutron guides are used to transport slow neutrons from sources to experiments. Conventional neutron supermirror guides use alternating thin layers based on nickel and titanium. Due to the magnetic properties of nickel, their neutron…

Instrumentation and Detectors · Physics 2022-04-20 A. Hollering , N. Rebrova , C. Klauser , Th. Lauer , B. Märkisch , U. Schmidt

We demonstrate the controlled spatial nucleation of superconductivity in a thin film deposited on periodic arrays of ferromagnetic dots with gradually increasing diameter. The perpendicular magnetization of the dots induces…

Superconductivity · Physics 2015-05-18 M. V. Milošević , W. Gillijns , A. V. Silhanek , A. Libál , V. V. Moshchalkov , F. M. Peeters

Magnetometry, x-ray, and neutron scattering have been used to study the structural and magnetic properties of a TbMnO3 thin film grown on a [001] SrTiO3 substrate by pulsed laser deposition. Although bulk TbMnO3 is a low temperature…

Materials Science · Physics 2009-11-13 B. J. Kirby , D. Kan , A. Luykx , M. Murakami , D. Kundaliya , I. Takeuchi

A localized and strong RF magnetic field, created by a magnetic write head, is used to examine the linear electrodynamic properties of a Nb superconducting film. The complex reflection coefficient of the write head held in close proximity…

Superconductivity · Physics 2014-06-06 Tamin Tai , B. G. Ghamsari , Steven M. Anlage

We study magneto-transport properties of several amorphous Indium oxide nanowires of different widths. The wires show superconducting transition at zero magnetic field, but, there exist a finite resistance at the lowest temperature. The…

Superconductivity · Physics 2016-11-29 Sreemanta Mitra , Girish C Tewari , Diana Mahalu , Dan Shahar

The vortex-state electrodynamics of s-wave superconductors has been studied by infrared spectroscopy. Far-infrared transmission and reflection spectra of superconducting NbTiN and NbN thin films were measured in a magnetic field…

Superconductivity · Physics 2013-05-14 Xiaoxiang Xi , J. -H. Park , D. Graf , G. L. Carr , D. B. Tanner

Spin Hall magnetoresistance (SMR) refers to a resistance change in a metallic film reflecting the magnetization direction of a magnet attached to the film. The mechanism of this phenomenon is spin exchange between conduction-electron spins…

The differential cross section for the inelastic magnetic scattering of neutrons by superconducting rings is derived theoretically taking account of the interaction of the neutron magnetic moment with magnetic field created by the…

Superconductivity · Physics 2015-05-18 A. I. Agafonov

Elastic neutron scattering experiments performed in semi-conducting La(1-x)Ca(x)MnO3 single crystals (x=0.05, 0.08), reveal new features in the problem of electronic phase separation and metal insulator transition. Below TN, the observation…

Strongly Correlated Electrons · Physics 2009-10-31 M. Hennion , F. Moussa , G. Biotteau , J. Rodriguez-Carvajal , L. Pinsard , A. Revcolevschi

A theory of spin-polarized transport in inhomogeneous magnetic semiconductors is developed and applied to magnetic/nonmagnetic p-n junctions. Several phenomena with possible spintronic applications are predicted, including spinvoltaic…

Condensed Matter · Physics 2009-11-07 Igor Zutic , Jaroslav Fabian , S. Das Sarma

The present article reviews recent experimental investigations of spin dynamics in iron-based superconductors and their parent compounds by means of inelastic neutron scattering. It mainly focuses on the most contemporary developments in…

Superconductivity · Physics 2016-01-05 Dmytro S. Inosov

Large linear magnetoresistance (MR) in electron-injected p-type silicon at very low magnetic field is observed experimentally at room temperature. The large linear MR is induced in electron-dominated space-charge transport regime, where the…

Materials Science · Physics 2013-06-05 Michael P. Delmo , Eiji Shikoh , Teruya Shinjo , Masashi Shiraishi

We theoretically study the nonlocal spin transport in a device consisting of a nonmagnetic metal (N) and ferromagnetic injector (F1) and detector (F2) electrodes connected to N. We solve the spin-dependent transport equations in a device…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 S. Takahashi , S. Maekawa

Motivated by possible spintronics applications in antiferromagnets, it was recently observed that symmetry admits magnets that combine attractive features of both ferromagnets and antiferromagnets. These systems, dubbed altermagnets, have…

The negatively charged boron vacancy ($\mathrm{V}_{\mathrm{B}}^-$) in hexagonal boron nitride (hBN) has garnered significant attention among defects in two-dimensional materials. This owes, in part, to its deterministic generation,…

Epitaxial niobium-nitride thin films with a critical temperature of Tc=16K and a thickness of 100nm were fabricated on MgO(100) substrates by pulsed laser deposition. Low-temperature magnetic force microscopy (MFM) images of the…

Superconductivity · Physics 2015-03-17 T. Shapoval , H. Stopfel , S. Haindl , J. Engelmann , D. S. Inosov , B. Holzapfel , V. Neu , L. Schultz

Electrically conducting films in a time-varying transverse applied magnetic field are considered. Their behavior is strongly influenced by the self-field of the induced currents, making the electrodynamics nonlocal, and consequently…

Superconductivity · Physics 2013-09-04 J. I. Vestgarden , P. Mikheenko , Y. M. Galperin , T. H. Johansen

We show that the field dependence of the magnetic penetration depth ($\lambda$), for which muon spin rotation ($\mu$SR) is an excellent microscopic probe, provides useful information on the degree of anisotropy for the superconducting order…

Superconductivity · Physics 2009-11-10 R. Kadono