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We investigate spin-dependent conductance across a magnetic tunnel junction (MTJ) including a ferromagnetic insulating barrier. The MTJ consists of two half-metallic ferromagnetic La2/3Sr1/3MnO3 (LSMO) manganites as electrodes and La2NiMnO6…

Applied Physics · Physics 2022-12-09 M. Abbasi Eskandari , S. Ghotb , P. Fournier

The giant magnetoresistance (GMR) of ferromagnetic bilayers with a superconducting contact (F1/F2/S) is calculated in ballistic and diffusive regimes. As in spin-valve, it is assumed that the magnetization in the two ferromagnetic layers F1…

Materials Science · Physics 2009-10-31 N. Ryzhanova , C. Lacroix , A. Vedyayev , D. Bagrets , B. Dieny

Unidirectional magnetoresistance (UMR) in a ferromagnetic bilayer due to the spin Hall effects (SHEs) provides a facile means of probing in-plane magnetization to avoid complex magnetic tunnel junctions. However, the UMR signal is very weak…

Mesoscale and Nanoscale Physics · Physics 2022-09-01 Kaihua Lou , Qianwen Zhao , Baiqing Jiang , Chong Bi

Recently introduced magnetic materials called altermagnets (AM) feature zero net magnetization but a momentum dependent magnetic exchange field, which can have intriguing implications when combined with superconductivity. In our work, we…

Superconductivity · Physics 2025-06-13 Simran Chourasia , Aleksandr Svetogorov , Akashdeep Kamra , Wolfgang Belzig

Spin current injection and spin accumulation near a ferromagnetic insulator (FI)/nonmagnetic metal (NM) bilayer film under a thermal gradient is investigated theoretically. Using the Fermi golden rule and the Boltzmann equations, we find…

Mesoscale and Nanoscale Physics · Physics 2016-07-13 Y. H. Shen , X. S. Wang , X. R. Wang

We have studied ferromagnetic metal/topological insulator bilayer system to understand magnetization dynamics of ferromagnetic metal (FM) in contact with a topological insulator (TI). At magnetic resonance condition, the precessing…

Mesoscale and Nanoscale Physics · Physics 2023-11-27 Sayani Pal , Soumik Aon , Subhadip Manna , Sambhu G Nath , Kanav Sharma , Chiranjib Mitra

The effect of spin relaxation on tunnel magnetoresistance (TMR) in a ferromagnet/superconductor/ferromagnet (FM/SC/FM) double tunnel junction is theoretically studied. The spin accumulation in SC is determined by balancing of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Saburo Takahashi , Taro Yamashita , Hiroshi Imamura , Sadamichi Maekawa

The unique features of ultrafast spin dynamics and the absence of macroscopic magnetization in antiferromagnetic (AFM) materials provide a distinct route towards high-speed magnetic storage devices with low energy consumption and high…

We develop the theory of magnetoresistance oscillations in layered quasi-two-dimensional (quasi-2D) metals. Using the Kubo-Streda formula, we calculate the Hall intralayer conductivity in a magnetic field perpendicular to conducting layers.…

Strongly Correlated Electrons · Physics 2024-06-10 Pavel D. Grigoriev , Taras I. Mogilyuk

Using the Continuous Time Quantum Monte Carlo Loop algorithm, we calculate the temperature dependence of the uniform susceptibility, and the specific heat of a spin-1/2 chain with random antiferromagnetic and ferromagnetic couplings, down…

Condensed Matter · Physics 2009-10-30 Beat Frischmuth , Manfred Sigrist

The current theoretical and experimental situations are reviewed for low-dimensional insulating systems with a low magnetic transition temperature TM and pronounced short-range magnetic order above this temperature. Both the standard and…

Strongly Correlated Electrons · Physics 2007-09-18 A A Katanin , V Yu Irkhin

The low power manipulation of magnetization is currently a highly sought-after objective in spintronics. Non ferromagnetic large spin-orbit coupling heavy metal (NM) / ferromagnet (FM) heterostructures offer interesting elements of response…

We have measured resonant soft x-ray diffuse magnetic scattering as a function of temperature in a positively exchange biased Co/FeF2 bilayer and analyzed the data in the distorted wave Born approximation to obtain in-plane charge and…

Materials Science · Physics 2012-03-16 X. Lu , S. Roy , E. Blackburn , Mikhail Erekhinsky , Ivan K. Schuller , J. B. Kortright , S. K. Sinha

The spin Hall effect in a heavy metal thin film allows to probe the magnetic properties of an adjacent magnetic insulator via magnetotransport measurements. Here, we investigate the magnetoresistive response of yttrium iron garnet/platinum…

Mesoscale and Nanoscale Physics · Physics 2021-06-30 Richard Schlitz , Sergey Granovsky , Sebastian T. B. Goennenwein

Magnetization and magnetoresistance have been measured in insulating antiferromagnetic La_{2}Cu_{0.97}Li_{0.03}O_{4} over a wide range of temperatures, magnetic fields, and field orientations. The magnetoresistance step associated with a…

Strongly Correlated Electrons · Physics 2011-06-08 I. Raicevic , Dragana Popovic , C. Panagopoulos , L. Benfatto , M. B. Silva Neto , E. S. Choi , T. Sasagawa

Ferromagnetic resonance properties of F$_1$/f/F$_2$/AF multilayers, where weakly ferromagnetic spacer f is sandwiched between strongly ferromagnetic layers F$_1$ and F$_2$, with F$_1$ being magnetically soft and F$_2$ - magnetically hard…

Mesoscale and Nanoscale Physics · Physics 2018-04-25 A. F. Kravets , A. I. Tovstolytkin , Yu. I. Dzhezherya , D. M. Polishchuk , I. M. Kozak , V. Korenivski

The electrical detection of spin torque ferromagnetic resonance (st-FMR) is becoming a popular method for measuring the spin-Hall angle of heavy metals (HM). However, various sensible analysis on the same material with either the same or…

Mesoscale and Nanoscale Physics · Physics 2019-02-27 Yin Zhang , Q. Liu , B. F. Miao , H. F. Ding , X. R. Wang

We report point-contact measurements of anisotropic magnetoresistance (AMR) in a single crystal of antiferromagnetic (AFM) Mott insulator Sr2IrO4. The point-contact technique is used here as a local probe of magnetotransport properties on…

Mesoscale and Nanoscale Physics · Physics 2014-12-03 Cheng Wang , Heidi Seinige , Gang Cao , Jian-Shi Zhou , John B. Goodenough , Maxim Tsoi

With spin-layer locking, the manipulation of spin degree of freedom via perpendicular electric field can be realized in a typical antiferromagnetically coupled bilayer. In analogy to the electric control of the anomalous layer Hall effect…

Mesoscale and Nanoscale Physics · Physics 2024-07-16 Yu-Hao Shen , Yiqun Liu , Min Luo

The spin excitations from the nonmagnetic charge-ordered insulating state of $\alpha$-(BEDT-TTF)$_2$I$_3$ at ambient pressure have been investigated by probing the static and low-frequency dynamic spin susceptibilities via site-selective…

Strongly Correlated Electrons · Physics 2016-09-08 Kyohei Ishikawa , Michihiro Hirata , Dong Liu , Kazuya Miyagawa , Masafumi Tamura , Kazushi Kanoda