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In the recent years, a spin-valve was developed with a current-confined-path structure consisting of a non-oxide-layer (NOL). We analyze magnetic structures of the current-confinedpath in the nano-oxide layer sandwiched between…

介观与纳米尺度物理 · 物理学 2009-01-12 Katsuyoshi Matsushita , Jun Sato , Hiroshi Imamura

Using density functional theory implemented within a tight-binding linear muffin-tin orbital method we perform calculations of electronic, magnetic and transport properties of ferromagnetic free-standing fcc Co wires with diameters up to…

材料科学 · 物理学 2009-11-11 R. F. Sabirianov , A. K. Solanki , J. D. Burton , S. S. Jaswal , E. Y. Tsymbal

Current-induced torques on ferromagnetic nanoparticles and on domain walls in ferromagnetic nanowires are normally understood in terms of transfer of conserved spin angular momentum between spin-polarized currents and the magnetic…

介观与纳米尺度物理 · 物理学 2009-11-13 P. M. Haney , R. A. Duine , A. S. Nunez , A. H. MacDonald

We investigate quantum dynamics and kinetics of a 2D conductor with closed Fermi surface reconstructed by a biaxial density wave, in which electrons move along a two-dimensional periodic net of semiclassical trajectories coupled by the…

强关联电子 · 物理学 2021-10-28 A. M. Kadigrobov , B. Keran , D. Radić

We show that the drift-diffusion mechanism in a normal-metal layer in combination with the resonance electron-magnon interactions at ferromagnet-normal interface of F-N-F heterostucture creates spatial instability modes and, out of these…

适应与自组织系统 · 物理学 2009-11-11 Pavel Levin

In several parent iron-pnictide compounds the resistivity has an extended range of linear magnetic field dependence. We argue that there is a simple and natural explanation of this behavior. Spin density wave transition leads to…

超导电性 · 物理学 2013-09-02 A. E. Koshelev

Solving numerically the 3D non linear Ginzburg-Landau (GL) equations, we study equilibrium and nonequilibrium phase transitions between different superconducting states of mesoscopic disks which are thinner than the coherence length and the…

超导电性 · 物理学 2016-08-31 V. A. Schweigert , F. M. Peeters , P. Singha Deo

We study the spin-transfer torque and magnetoresistance of a ferromagnet$\mid$superconductor$\mid$ferromagnet spin-valve, allowing for an arbitrary magnetization misorientation and treating both s-wave and d-wave symmetries of the…

超导电性 · 物理学 2015-05-13 J. Linder , T. Yokoyama , A. Sudbø

We theoretically study the current-induced dynamics of a transverse magnetic domain wall in bi-layer nanowires consisting of a ferromagnet on top of a nonmagnet having strong spin-orbit coupling. Domain wall dynamics is characterized by two…

介观与纳米尺度物理 · 物理学 2012-07-18 Soo-Man Seo , Kyoung-Whan Kim , Jisu Ryu , Hyun-Woo Lee , Kyung-Jin Lee

We argue that in order to study the magneto-transport in a relativistic Weyl fluid, it is needed to take into account the associated quantum corrections, namely the side-jump effect, at least to second order. To this end, we impose Lorentz…

高能物理 - 理论 · 物理学 2019-05-28 Navid Abbasi , Farid Taghinavaz , Omid Tavakol

Highly sophisticated synthesis methods and experimental techniques allow for precise measurements of magnetic properties of nanoparticles that can be reliably reproduced using theoretical models. Here, we investigate the magnetic properties…

介观与纳米尺度物理 · 物理学 2022-09-21 Nikolaos Ntallis , Corisa Kons , Hariharan Srikanth , Manh-Huong Phan , D. A. Arena , Manuel Pereiro

It is shown that, upon the electron quantum transport via the nanostructure containing a spin dimer, the spin-flip processes caused by the s-f exchange interaction between electron and dimer spins lead to the Fano resonance effects. An…

介观与纳米尺度物理 · 物理学 2011-09-05 Valery V. Val'kov , Sergey V. Aksenov

Spin-orbit torques in noncentrosymmetric polycrystalline magnetic heterostructures are usually described in terms of field-like and damping-like torques. However, materials with a lower symmetry point group can exhibit torques whose…

材料科学 · 物理学 2023-03-29 Diego García Ovalle , Armando Pezo , Aurélien Manchon

We study a triplet spin valve obtained by intercalating a triplet superconductor spacer between two ferromagnetic regions with non-collinear magnetizations. We demonstrate that the magnetoresitance of the triplet spin valve depends on the…

介观与纳米尺度物理 · 物理学 2013-12-02 F. Romeo , R. Citro

When a ferromagnet is deposited on the surface of a topological insulator the topologically protected surface state develops a gap and becomes a 2-dimensional quantum Hall liquid. We demonstrate that the Hall current in such a liquid,…

材料科学 · 物理学 2015-05-14 Ion Garate , M. Franz

Highly-anisotropic in-plane magneto-resistance (MR) in graphite (HOPG) samples has been recently observed (Y. Kopelevich et al., arXiv:1202.5642) which is negative and linear in low fields in some current direction while it is giant,…

介观与纳米尺度物理 · 物理学 2012-08-15 A. S. Alexandrov , V. A. Dediu , V. V. Kabanov , R. R. da Silva , Y. Kopelevich

We report the large linear magnetoresistance ($\sim 300\%$ in 9 T field at 2 K) and magnetothermopower in layered SrZnSb$_2$ crystal with quasi-two-dimensional Sb layers. A crossover from the semiclassical parabolic field dependent…

介观与纳米尺度物理 · 物理学 2016-04-18 Kefeng Wang , C. Petrovic

Antiferromagnetic materials promise improved performance for spintronic applications, as they are robust against external magnetic field perturbations and allow for faster magnetization dynamics compared to ferromagnets. The direct…

The ordinary magnetoresistance (MR) of doped semiconductors is positive and quadratic in a low magnetic field, B, as it should be in the framework of the Boltzmann kinetic theory or in the conventional hopping regime. We observe an unusual…

超导电性 · 物理学 2015-06-04 Y. Kopelevich , R. R. da Silva , A. S. Alexandrov

We calculate the resistivity and Giant Magnetoresistance (GMR) of a segmented nanowire consisting of two ferromagnetic segments separated by a thin paramagnetic spacer. The quantization of the electron motion due to the small nanowire…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Ye. Zhuravlev , H. O. Lutz , A. V. Vedyayev