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We analyze the enhancement of the superconducting critical temperature of superconducting/ferromagnetic bilayers due to the appearance of localized superconducting states in the vicinity of magnetic domain walls in the ferromagnet. We…

超导电性 · 物理学 2015-03-31 M. Houzet , A. I. Buzdin

We show that very large negative magnetoresistance can be obtained in magnetic trilayers in a current-in-plane geometry owing to the existence of crossed Andreev reflection. This spin-valve consists of a thin superconducting film sandwiched…

介观与纳米尺度物理 · 物理学 2007-05-23 F. Giazotto , F. Taddei , R. Fazio , F. Beltram

A large positive magnetoresistivity (up to tens of percents) is observed in both underdoped and overdoped superconducting La2-xSrxCuO4 epitaxial thin films at temperatures far above the superconducting critical temperature Tc. For the…

超导电性 · 物理学 2016-08-31 J. Vanacken , L. Weckhuysen , T. Wambecq , P. Wagner , V. V. Moshchalkov

An one-dimensional model of magnetic flux penetration into thin strip-like superconductive film is subject to numerical analysis which combines explicit account for specific oblate geometry of magnetic field lines around the film and a…

超导电性 · 物理学 2007-05-23 Yu. E. Kuzovlev

We propose the thermodynamical theory of nanodomain tailoring with the help of atomic force microscope electric field in thin ferroelectric-semiconductor films. We modified the existing thermodynamical models of domain formation allowing…

材料科学 · 物理学 2007-05-23 Anna N. Morozovska , Eugene A. Eliseev

Coating two nearby bodies with thin ferromagnetic films one obtains, below the Curie temperature, two interacting sets of magnetic domains. The dynamical properties of the bodies in presence of this domain interaction have never been…

介观与纳米尺度物理 · 物理学 2014-01-14 Andrea Benassi

Patterns of ferroic domains and domain walls are being intensively studied to implement new logic schemes. Any technological application of such objects depends on a detailed understanding of them. This study analyzes patterns of…

材料科学 · 物理学 2024-01-18 Cynthia P. Quinteros , Dafne Goijman , Silvia Damerio , Julián Milano

We develop a phenomenological model of superconductivity near a domain wall in a ferromagnet. In addition to the electromagnetic interaction of the order parameter with the ferromagnetic magnetization, we take into account the possibility…

超导电性 · 物理学 2009-11-10 K. V. Samokhin , D. Shirokoff

It is well-known that in thin ferromagnetic film with a net magnetization perpendicular to the film the collinear arrangement of spins is unstable in an in-plane field $H$ smaller than its saturation value $H_c$. Existence of a stripe phase…

强关联电子 · 物理学 2009-05-04 A. V. Syromyatnikov

We report an unusual persistence of superconductivity against high magnetic fields in the iron chalcogenide film FeTe:O$_{x}$ below ~ 2.5 K. Instead of saturating like a mean-field behavior with a single order parameter, the measured…

超导电性 · 物理学 2015-06-12 I. K. Dimitrov , W. D. Si , W. Ku , S. -J. Han , J. Jaroszynski

We propose a concept for superconducting electric field-effect devices based on superconducting films sandwiched between ferroelectric layers. We provide theoretical calculations that indicate how the field effect in these devices could be…

超导电性 · 物理学 2007-05-23 Natalia Pavlenko , Franz Schwabl

For uniaxial easy axis films, properties of magnetic domains are usually described within the Kittel model, which assumes that domain walls are much thinner than the domains. In this work we present a simple model that includes a proper…

材料科学 · 物理学 2015-06-04 F. Virot , L. Favre , R. Hayn , M. D. Kuz'min

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…

超导电性 · 物理学 2015-05-20 J. I. Vestgarden , D. V. Shantsev , Y. M. Galperin , T. H. Johansen

We report electrically switchable polarization and ferroelectric domain scaling over a thickness range of 5-100 nm in BiFeO3 films deposited on [110] vicinal substrates. The BiFeO3 films of variable thickness were deposited with SrRuO3…

Optical conductivity of a moderately disordered superconducting NbN film was investigated by terahertz time-domain spectroscopy in external magnetic field applied along the film plane. The film thickness of about 5 nm was comparable with…

超导电性 · 物理学 2022-01-19 M. Sindler , F. Kadlec , C. Kadlec

We consider effects of an externally applied electrostatic field on superconductivity, self-consistently within a BCS mean field model, for a clean 3D metal thin film. The electrostatic change in superconducting condensation energy scales…

超导电性 · 物理学 2019-12-10 P. Virtanen , A. Braggio , F. Giazotto

To distinguish between the effects of strain and magnetism on the superconductivity in $c$-axis La$_{2/3}$Ca$_{1/3}$MnO$_3$/YBa$_2$Cu$_3$O$_{7-\delta}$ (LCMO/YBCO) heterostructures, we study perovskite/YBCO/perovskite thin films using…

超导电性 · 物理学 2017-10-31 H. Zhang , A. Nguyen , T. Gredig , J. Y. T. Wei

Very thick films of BiCrO$_3$ have been grown on a SrTiO$_3$ substrate, maintaining a tetragonal lattice up to thicknesses of 14,000\AA. Assuming we can treat films of this thickness as bulk crystals, we first calculated the experimentally…

材料科学 · 物理学 2012-02-08 Jun Ding , Yugui Yao , Leonard Kleinman

The 71{\deg} stripe domain patterns of epitaxial BiFeO3 thin films are frequently being explored to achieve new functional properties, dissimilar from the BiFeO3 bulk properties. We show that in-plane switching and out-of-plane switching of…

材料科学 · 物理学 2012-10-15 Florian Johann , Alessio Morelli , Ionela Vrejoiu

The ferroelectric properties of disorder Pb(Zr$_{0.5}$Ti$_{0.5}$)O$_{3}$ thin films are investigated with Monte Carlo simulations on the basis of a first-principles-derived Hamitonian. It is found that there exists a critical thickness of…

材料科学 · 物理学 2009-11-10 Zhongqing Wu , Ningdong Huang , Zhirong Liu , Jian Wu , Wenhui Duan , Bing-Lin Gu , Xiao-Wen Zhang