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Experimentally an asymmetry of the reversal modes has been found in certain exchange bias systems. From a numerical investigation of the domain state model evidence is gained that this effect depends on the angle between the easy axis of…

Condensed Matter · Physics 2009-11-10 B. Beckmann , U. Nowak , K. D. Usadel

We consider a semi-infinite spatially dispersive dielectric with unequal transverse and longitudinal susceptibilities. The effect of the boundary is characterized by arbitrary reflection coefficients for polarization waves in the material…

Optics · Physics 2017-01-09 R. J. Churchill , T. G. Philbin

We calculate the energy of a boundary between ferro- and antiferromagnetic regions in a phase separated double-exchange magnet in two and three dimensions. The orientation dependence of this energy can significantly affect the geometry of…

Strongly Correlated Electrons · Physics 2007-05-23 D. I. Golosov , D. Orgad

The temperature dependence of the interlayer electrical and thermal resistivity in a layered metal are calculated for Fermi liquid quasiparticles which are scattered inelastically by two-dimensional antiferromagnetic spin fluctuations. Both…

Strongly Correlated Electrons · Physics 2009-01-28 M. F. Smith , Ross H. McKenzie

We present theoretical description of conduction electrons interacting with a domain wall in ferromagnetic metals. The description takes into account interaction between electrons. Within the semiclassical approximation we calculate the…

Materials Science · Physics 2009-11-07 V. K. Dugaev , J. Barnas , A. Lusakowski , L. A. Turski

From general considerations of spin-symmetry breaking associated with (anti-)ferromagnetism in metallic systems with Coulomb repulsion, we obtain interesting and simple all-order rules involving the ratios of the densities of states. These…

Superconductivity · Physics 2011-12-30 Kosuke Odagiri

For antiferromagnetically coupled Fe/Cr multilayers the low field contribution to the resistivity, which is caused by the domain walls, is strongly enhanced at low temperatures. The low temperature resistivity varies according to a power…

Materials Science · Physics 2009-11-10 F. G. Aliev , R. Schad , A. Volodin , K. Temst , C. Van Haesendonck , Y. Bruynseraede , I. Vavra , V. K. Dugaev , R. Villar

We have fabricated (Ga,Mn)As nanostructures in which domain walls can be pinned by sub-10 nm constrictions. Controlled by shape anisotropy, we can switch the regions on either side of the constriction to either parallel or antiparallel…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 C. Ruester , T. Borzenko , C. Gould , G. Schmidt , L. W. Molenkamp , X. Liu , T. J. Wojtowicz , J. K. Furdyna , Z. G. Yu , M. E. Flatte

In conventional metals, modification of electron trajectories under magnetic field gives rise to a magnetoresistance that varies quadratically at low field, followed by a saturation at high field for closed orbits on the Fermi surface.…

Superconductivity · Physics 2017-06-06 Q. Niu , W. C. Yu , K. Y. Yip , Z. L. Lim , H. Kotegawa , E. Matsuoka , H. Sugawara , H. Tou , Y. Yanase , Swee K. Goh

We present a theoretical study of spin-dependent transport through a ferromagnetic domain wall. With an increase of the number of components of the exchange coupling, we have observed that the variance of the conductance becomes half. As…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 J. Ohe , M. Yamamoto , T. Ohtsuki , K. Slevin

Living systems are maintained out-of-equilibrium by external driving forces. At stationarity, they exhibit emergent selection phenomena that break equilibrium symmetries and originate from the expansion of the accessible chemical space due…

Statistical Mechanics · Physics 2026-04-01 Shiling Liang , Paolo De Los Rios , Daniel Maria Busiello

In solid state physics, giant magnetoresistance is the large change in electrical resistance due to an external magnetic field. Here we show that giant magnetoresistance is possible in a spin chain composed of weakly interacting layers of…

Strongly Correlated Electrons · Physics 2021-03-18 Kasper Poulsen , Nikolaj T. Zinner

The use of fully or partially absorbing boundary conditions for diffusion-based problems has become paradigmatic in physical chemistry and biochemistry to describe reactions occurring in solutions or in living media. However, as chemical…

Statistical Mechanics · Physics 2022-12-13 Francesco Piazza

I derive a general set of boundary conditions for quasiclassical transport theory of metals and superconductors that is valid for equilibrium and non-equilibrium situations and includes multi-band systems, weakly and strongly spin-polarized…

Superconductivity · Physics 2011-09-22 Matthias Eschrig

The interlayer magnetoresistance of a quasi-two-dimensional layered metal with a d-wave pseudogap is calculated semiclassically. An expression for the interlayer resistivity as a function of the strength and direction of the magnetic field,…

Strongly Correlated Electrons · Physics 2009-06-08 M. F. Smith , Ross H. McKenzie

We derive modified reflection coefficients for electromagnetic waves in the THz and far infrared range. The idea is based on hydrodynamic boundary conditions for metallic conduction electrons. The temperature-dependent part of the Casimir…

Quantum Physics · Physics 2021-04-21 Mandy Hannemann , Gino Wegner , Carsten Henkel

The description of the proximity effect in superconducting/ferromagnetic heterostructures requires to use spin-dependent boundary conditions. Such boundary conditions must take into account the spin dependence of the phase shifts acquired…

Superconductivity · Physics 2009-11-13 Audrey Cottet

Invariance in duality transformation, the self-dual property, has important applications in electromagnetic engineering. In the present paper, the problem of most general linear and local boundary conditions with self-dual property is…

Classical Physics · Physics 2020-03-09 Ismo V. Lindell , Ari Sihvola

A set of four scalar conditions involving normal components of the fields D and B and their normal derivatives at a planar surface is introduced, among which different pairs can be chosen to represent possible boundary conditions for the…

Classical Physics · Physics 2015-05-13 I. V. Lindell , A. H. Sihvola

The resistivity of disordered metallic layer sandwiched by two ferromagnetic layers at low-temperature is investigated theoretically. It is shown that the magnetic field acting at the interface does not affect the classical Boltzmann…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Gen Tatara , Hidetoshi Fukuyama