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Phenomenology similar to the nonreciprocal charge transport violating Onsagers reciprocity relations can develop in directionally inhomogeneous conducting films with nonuniform Hall coefficient along the current trajectory. The effect is…

介观与纳米尺度物理 · 物理学 2021-09-13 Gregory Kopnov , Alexander Gerber

The tunnel current and magnetoresistance (TMR) are investigated in magnetic tunnel junctions consisting of a spin-filter tunnel barrier, sandwiched between a ferromagnetic (FM) electrode and a nonmagnetic (NM) electrode. The investigations…

介观与纳米尺度物理 · 物理学 2009-11-10 Alireza Saffarzadeh

Magnetic cylindrical nanowires are very fascinating objects where the curved geometry allows many novel magnetic effects and a variety of non-trivial magnetic structures. Micromagnetic modelling plays an important role in revealing the…

介观与纳米尺度物理 · 物理学 2022-06-16 J. A. Fernandez-Roldan , Yu. P. Ivanov , O. Chubykalo-Fesenko

Resistance of certain (conductive and otherwise isotropic) ferromagnets turns out to exhibit anisotropy with respect to the direction of magnetisation: R$_\parallel$ different from R$_\perp$ with reference to the electric current direction.…

材料科学 · 物理学 2023-10-31 Philipp Ritzinger , Karel Vyborny

Combined first order reversal curve (FORC) analyses of the magnetization (M-FORC) and magnetoresistance (MR-FORC) have been employed to provide a comprehensive study of the M-MR correlation in two canonical systems: a NiFe/Cu/FePt pseudo…

材料科学 · 物理学 2014-09-12 Randy K. Dumas , Peter K. Greene , Dustin A. Gilbert , Li Ye , Chaolin Zha , Johan Åkerman , Kai Liu

The study of magnetoresistance (MR) phenomena has been pivotal in advancing magnetic sensors and spintronic devices. Helimagnets present an intriguing avenue for spintronics research. Theoretical predictions suggest that MR magnitude in the…

We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe2O4 (CFO) ferrimagnetic insulating films. The results can be described in terms of the recently discovered spin Hall magnetoresistance (SMR).…

Extensive experimental results are presented on the multi-scale phase modulation phenomena observed in colossal magnetoresistance manganites. Two key types of phase inhomogeneities directly relevant to the colossal magnetoresistance (CMR)…

强关联电子 · 物理学 2007-05-23 K. H. Kim , M. Uehara , V. Kiryukhin , S. -W. Cheong

Magnetoresistance (MR) in the out-of-plane resistivity $\rho_c$ for the normal state of the one-layer high-quality Bi_2Sr_2CuO_x single crystals under various dc magnetic fields up to 28 T over the temperature region 6-100 K has been…

超导电性 · 物理学 2007-05-23 S. I. Vedeneev , A. G. M. Jansen , B. A. Volkov , P. Wyder

Quantitative magnetic resonance imaging (qMRI) allows images to be compared across sites and time points, which is particularly important for assessing long-term conditions or for longitudinal studies. The multiparametric mapping (MPM)…

信号处理 · 电气工程与系统科学 2024-10-24 Klara Baś , Christian Lambert , John Ashburner

In this work, we study the spin transport at the Ferromagnet$|$Noncentrosymmetric Superconductor (F$|$NCSC) junction of a Ferromagnet$|$Noncentrosymmetric Superconductor$|$Ferromagnet (F$|$NCSC$|$F) spin valve. We investigate the Tunnelling…

超导电性 · 物理学 2019-10-15 Saumen Acharjee , Umananda Dev Goswami

Current flowing is studied in magnetic junctions consisting of a ferromagnetic metal (FM), antiferromagnetic conductor (AFM) and a nonmagnetic metal closing the electric circuit. The FM layer with high anisotropy and pinned spins of the…

材料科学 · 物理学 2010-11-22 Yu. V. Gulyaev , P. E. Zilberman , E. M. Epshtein

Early studies have found quasi-reversible magnetization curves in polycrystalline bulk rare-earth iron oxypnictides that suggest either wide-spread obstacles to intergranular current or very weak vortex pinning. In the present study of…

The magnetoresistance (MR) of 10 nm to 200 nm thin polycrystalline Co-films, deposited on glass and insulating Si(100), is studied in fields up to 120 kOe, aligned along the three principal directions with respect to the current:…

其他凝聚态物理 · 物理学 2009-11-11 Woosik Gil , Detlef Goerlitz , Michael Horisberger , Juergen Koetzler

The ability to use external magnetic fields to influence the microstructure in polycrystalline materials has potential applications in microstructural engineering. To explore this potential and to understand the complex interactions between…

材料科学 · 物理学 2019-04-03 R. Backofen , K. R. Elder , A. Voigt

Magnetoresistance (MR) of Bi-2212 single crystals with T$_{c}$ $\approx 87-92 K$ is studied in pulsed magnetic fields up to 50T along the c-axis in a wide temperature range. The negative out-of-plane and the positive in-plane MRs are…

超导电性 · 物理学 2009-11-10 V. N. Zavaritsky , J. Vanacken , V. V. Moshchalkov , A. S. Alexandrov

Giant or tunneling magnetoresistance are physical phenomena used for reading information in commercial spintronic devices. The effects rely on a conserved spin current passing between a reference and a sensing ferromagnetic electrode in a…

介观与纳米尺度物理 · 物理学 2022-09-27 Libor Šmejkal , Anna Birk Hellenes , Rafael González-Hernández , Jairo Sinova , Tomáš Jungwirth

Van der Waals magnetic materials are an ideal platform to study low-dimensional magnetism. Opposed to other members of this family, the magnetic semiconductor CrSBr is highly resistant to degradation in air, which, besides its exceptional…

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

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
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