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Ferroelectrics feature spontaneous electric dipolar order reconfigurable via electric fields. Recent theoretical studies of the collective excitations of this electric dipolar order give rise to the hope that "ferron" quasiparticles may…

Different mechanisms of spin-dependent tunneling are analyzed with respect to their role in tunnel magnetoresistance (TMR). Microscopic calculation within a realistic model shows that direct tunneling in iron group systems leads to about a…

Condensed Matter · Physics 2009-10-31 A. M. Bratkovsky

Metallic transition-metal nitrides (TMNs) are promising conductive ceramics for many applications, whose thermal transport is of great importance in device design. It is found metallic TiN and HfN hold anomalous thermal transport behaviors…

Materials Science · Physics 2020-06-30 Shouhang Li , Ao Wang , Yue Hu , Xiaokun Gu , Zhen Tong , Hua Bao

One of the main challenges in the field of thermal radiation is to actively control the near-field radiative heat transfer (NFRHT) between closely spaced bodies. In this context, the use of an external magnetic field has emerged as a very…

Optics · Physics 2020-02-26 Edwin Moncada-Villa , Juan Carlos Cuevas

Spin-dependent transport at heavy metal/magnetic insulator interfaces is at the origin of many phenomena at the forefront of spintronics research. A proper quantification of the different interfacial spin conductances is crucial for many…

We theoretically investigate the thermal Hall transport of magnon-polarons in a two-dimensional honeycomb antiferromagnetic insulator under the influence of a perpendicular magnetic field, varying in strength. The application of a…

Mesoscale and Nanoscale Physics · Physics 2024-06-12 Gyungchoon Go , Heejun Yang , Je-Geun Park , Se Kwon Kim

We investigate the spin-dependent transport of GaMnAs-based magnetic tunnel junctions (MTJs) containing a paramagnetic AlMnAs barrier with various thicknesses. The barrier height of AlMnAs with respect to the Fermi level of GaMnAs is…

Materials Science · Physics 2015-05-14 Shinobu Ohya , Iriya Muneta , Pham Nam Hai , Masaaki Tanaka

Temperature dependent FMR-measurements of Ni and Co films are analysed using a microscopic theory for ultrathin metallic systems. The mechanism governing the temperature dependence of the magnetic anisotropy energy is identified and…

Strongly Correlated Electrons · Physics 2009-11-11 J. Kienert , S. Schwieger , K. Lenz , J. Lindner , K. Baberschke , W. Nolting

Designing two-dimensional (2D) materials with magnetic and topological properties has continuously attracted intense interest in fundamental science and potential applications. Here, on the basis of first-principles calculations, we predict…

Materials Science · Physics 2020-09-08 Chang Liu , Botao Fu , Huabing Yin , Guangbiao Zhang , Chao Dong

Although spin injection at room temperature in an IrMn metallic antiferromagnet strongly depends on the transport regime, and is more efficient in the case of magnonic transport, in this article, we present experimental data demonstrating…

Materials Science · Physics 2018-09-26 O. Gladii , L. Frangou , G. Forestier , R. L. Seeger , S. Auffret , I. Joumard , M. Rubio-Roy , S. Gambarelli , V. Baltz

Magnon torques, which can operate without involving moving electrons, could circumvent the Joule heating issue. In conventional magnon torque systems, the spin source layer with strong spin-orbit coupling is utilized to inject magnons, and…

Materials Science · Physics 2026-01-12 Yuchen Pu , Guoyi Shi , Hua Bai , Xinhou Chen , Chenhui Zhang , Zhaohui Li , Mehrdad Elyasi , Hyunsoo Yang

Magnon drag effect induced by an applied electric field in ferromagnetic metals is theoretically studied by a microscopic calculation of the force on magnons arising from magnon emission/absorption and scattering due to driven electrons. It…

Mesoscale and Nanoscale Physics · Physics 2022-11-01 Hiroshi Funaki , Gen Tatara

The discovery of new mechanisms of controlling magnetic properties by electric fields or currents furthers the fundamental understanding of magnetism and has important implications for practical use. Here, we present a novel approach of…

Materials Science · Physics 2023-08-21 Pavel Salev , Iana Volvach , Dayne Sasaki , Pavel Lapa , Yayoi Takamura , Vitaliy Lomakin , Ivan K Schuller

Electrically injected and detected nonlocal magnon transport has emerged as a versatile method for transporting spin as well as probing the spin excitations in a magnetic insulator. We examine the role of drift currents in this phenomenon…

Mesoscale and Nanoscale Physics · Physics 2022-05-24 Sebastián de-la-Peña , Richard Schlitz , Saül Vélez , Juan Carlos Cuevas , Akashdeep Kamra

We observe that an rf microwave field strongly influences the transport of incoherent thermal magnons in yttrium iron garnet. Ferromagnetic resonance in the nonlinear regime suppresses thermal magnon transport by 95%. The transport is also…

A superconducting double spin valve device is proposed. Its operation takes advantage of the interplay between the spin-filtering effect of ferromagnetic insulators and superconductivity-induced out-of-equilibrium transport. Depending on…

Mesoscale and Nanoscale Physics · Physics 2009-08-03 Francesco Giazotto

Magnetic tunnel junctions (MTJs) are key components of spintronic devices, such as magnetic random-access memories. Normally, MTJs consist of two ferromagnetic (FM) electrodes separated by an insulating barrier layer. Their key functional…

Materials Science · Physics 2024-09-06 Kartik Samanta , Yuan-Yuan Jiang , Tula R. Paudel , Ding-Fu Shao , Evgeny Y. Tsymbal

Chiral-lattice degrees of freedom can offer novel chirality-selective functionalities for thermotronic applications. Chiral phonons, carrying both heat and angular momentum, can emerge through a breaking of chiral degeneracy in the phonon…

We study the effects of spin transfer on thermally activated dynamics of magnetic nanopillars with identical thicknesses of the magnetic layers. The symmetric nanopillars exhibit anomalous dependencies of switching statistics on magnetic…

Materials Science · Physics 2009-11-13 Weng L. Lim , Nicholas Anthony , Andrew Higgins , Sergei Urazhdin

Using first-principles quantum-transport calculations, we investigate spin-dependent electronic and transport properties of antiferromagnetic tunnel junctions (AFMTJs) that consist of (110)-oriented antiferromagnetic (AFM) metal RuO$_{2}$…