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We study the electron and spin transport in a van der Waals system formed by one layer with strong spin-orbit coupling and a second layer without spin-orbit coupling, in the regime when the interlayer tunneling is random. We find that in…

Mesoscale and Nanoscale Physics · Physics 2019-11-13 M. Rodriguez-Vega , G. Schwiete , Enrico Rossi

We investigated temperature dependent current driven spin-orbit torques in magnetron sputtered Ru2Sn3 (4 and 10 nm) /Co20Fe60B20 (5 nm) layered structures with in-plane magnetic anisotropy. The room temperature damping-like and field-like…

When two planar atomic membranes are placed within the van der Waals distance, the charge and heat transport across the interface are coupled by the rules of momentum conservation and structural commensurability, leading to outstanding…

Mesoscale and Nanoscale Physics · Physics 2018-01-08 Phanibhusan S. Mahapatra , Kingshuk Sarkar , H. R. Krishnamurthy , Subroto Mukerjee , Arindam Ghosh

We investigate the lateral van der Waals (vdW) force between an anisotropic polarizable particle and a perfectly conducting plane with a hemispherical protuberance with radius $R$. We predict, via an exact calculation, a sign inversion in…

Quantum Physics · Physics 2023-03-08 Lucas Queiroz , Edson C. M. Nogueira , Danilo T. Alves

A stronger interlayer magnetic coupling (ILMC) can open up new opportunities in spintronics devices for Fe$_5$GeTe$_2$ (F5GT), a demonstrated two-dimensional (2D) van der Waals (vdW) material with high Currie temperature. Here we observe an…

Materials Science · Physics 2023-12-04 Wen-Qiang Xie , Chang-Chun He , Xiao-Bao Yang , Yu-Jun Zhao , Wen-Tong Geng

We develop a theory for interlayer tunneling in van der Waals heterostructures driven under a strong electromagnetic field, using graphene/{\it h}-BN/graphene as a paradigmatic example. Our theory predicts that strong anti-resonances appear…

Mesoscale and Nanoscale Physics · Physics 2019-05-15 Woo-Ram Lee , Wang-Kong Tse

The piezomagnetic effect-strain-induced linear modulation of magnetization, arises in magnets with broken time-reversal symmetry (BTRS), offering a pathway to bidirectional strain-based control of magnetism, which is an essential…

Mesoscale and Nanoscale Physics · Physics 2026-02-05 Abdul Ahad , Miuko Tanaka , Nguyen Duy Khanh , Riku Ishioka , Aki Kitaori , Tenta Kitamura , Hao Ou , Jiang Pu , Shinichiro Seki , Toshiya Ideue

Voltage-induced magnetic anisotropy has been quantitatively studied in polycrystalline Ni thin film deposited on flexible substrate using microstrip ferromagnetic resonance. This anisotropy is induced by a piezoelectric actuator on which…

Materials Science · Physics 2013-12-03 Fatih Zighem , Damien Faurie , Silvana Mercone , Mohamed Belmeguenai , Halim Haddadi

More than forty years ago, Barash published a calculation of the full retarded Casimir-Lifshitz torque for planar birefringent media with arbitrary degrees of anisotropy. An independent theoretical confirmation has been lacking since. We…

Mesoscale and Nanoscale Physics · Physics 2019-07-24 Wijnand Broer , John Yuh Han Liow , Bing-Sui Lu

The discovery of an ever increasing family of atomic layered magnetic materials, together with the already established vast catalogue of strong spin-orbit coupling (SOC) and topological systems, calls for some guiding principles to tailor…

Materials Science · Physics 2021-10-13 Hidekazu Kurebayashi , Jose H. Garcia , Safe Khan , Jairo Sinova , Stephan Roche

The influence of an asymmetric in-plane magnetic anisotropy on the thermally activated spin current is studied theoretically for two different systems; (i) the system consisting of a ferromagnetic insulator in a direct contact with a…

Mesoscale and Nanoscale Physics · Physics 2015-12-09 L. Chotorlishvili , Z. Toklikishvili , S. R. Etesami , V. K. Dugaev , J. Barnas , J. Berakdar

The technique of conventional ferromagnet/heavy-metal spin-orbit torque (SOT) offers significant potential for enhancing the efficiency of magnetic memories. However, it faces fundamental physical limitations, including hunting effects from…

Spin torques, that is, effects of conduction electrons on magnetization dynamics, are calculated microscopically in the first order in spatial gradient and time derivative of magnetization. Special attention is paid to the so-called…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 H. Kohno , G. Tatara , J. Shibata , Y. Suzuki

Electric-field controlled magnetization dynamics is an important integrant in low power spintronic devices. In this letter, we demonstrate electric-field induced parametric excitation for CoFeB/MgO junctions by using interfacial in-plane…

Mesoscale and Nanoscale Physics · Physics 2021-12-28 Angshuman Deka , Bivas Rana , Ryo Anami , Katsuya Miura , Hiromasa Takahashi , YoshiChika Otani , Yasuhiro Fukuma

Two-dimensional van der Waals (vdW) magnetic materials are versatile platforms for tailoring electronic and magnetic properties, in which the insertion of chemical species into their interlayer gaps offers a powerful route to engineer…

We present a set of three-dimensional (3D) direct numerical simulations of incompressible decaying magnetohydrodynamic turbulence in which we investigate the influence of an external uniform magnetic field B_0. A parametric study in terms…

Fluid Dynamics · Physics 2009-11-13 Barbara Bigot , Sebastien Galtier , Helene Politano

Voltage-driven spin transfer torque in a magnetic tunnel junction comprising magnetic insulating electrodes is studied theoretically. In contrast with the conventional magnetic tunnel junctions comprising transition metal ferromagnets, the…

Mesoscale and Nanoscale Physics · Physics 2012-06-19 Y. Yuan A. Manchon

Homogeneous in-plane biaxial tensile strain strengthens the out-of-plane van der Waals interaction in \MoS\ bilayers (BLs) and can be used to fine-tune their terahertz (THz) oscillations. Using ultralow-frequency Raman spectroscopy on…

Materials Science · Physics 2026-02-13 S. Patel , Jose D. Mella , S. Puri , Salvador Barraza-Lopez , H. Nakamura

Carbon-based bilayer van der Waals (vdW) materials are attracting much attention due to their predicted interesting physical properties. Here, we theoretically investigate electronic and optical properties of C$_3$B/C$_3$N vdW…

Materials Science · Physics 2023-09-07 Po-Hsin Shih , Thi-Nga Do , Godfrey Gumbs

The anisotropic diffusion of electrons with various rigidity and the anomalous conductivity of a collisionless plasma in the presence of Weibel-generated quasi-static turbulent and uniform external magnetic fields are examined. Using an…