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Magnon-mediated spin transport across nonmagnetic metal (NM) and ferromagnetic insulator (FI) interface depends critically on electron-magnon coupling. We propose a novel route to enhance electron-magnon coupling dynamically from transport…

Mesoscale and Nanoscale Physics · Physics 2022-11-23 Gaoyang Li , Hao Jin , Yadong Wei , Jian Wang

Nonequilibrium dynamics in spin systems is a topic currently under intense investigation as it provides fundamental insights into thermalization, universality, and exotic transport phenomena. While most of the studies have been focused on…

Mesoscale and Nanoscale Physics · Physics 2023-11-01 Chengyun Hua , Lucas Lindsay , Yuya Shinohara , David Alan Tennant

In the presence of an AC drive, multiterminal Josephson junctions exhibit the inverse AC Josephson effect, where the oscillations of the superconducting phase of each junction can lock onto one another or onto the external drive. The…

Superconductivity · Physics 2022-11-23 François Amet , Sara Idris , Aeron McConnell , Brian Opatosky , Ethan Arnault

Spin-polarized current effect is studied on the static and dynamic magnetization of the antiferromagnet in a ferromagnet - antiferromagnet nanojunction. The macrospin approximation is generalized to antiferromagnets. Canted…

Materials Science · Physics 2011-12-13 E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman

We find that the damping of micromechanical cantilevers is sensitive to the relaxation dynamics of paramagnetic ions contained within the levers. We measure cantilevers containing paramagnetic Mn ions as a function of temperature, magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 J. G. E. Harris , R. Knobel , K. D. Maranowski , A. C. Gossard , N. Samarth , D. D. Awschalom

Nonlocal magnon transport can provide valuable insight into the magnetic properties of magnetic insulators (MIs). A spin-flop transition, a typical magnetic reorientation in antiferromagnets, is expected to affect mag non transport, but…

Mesoscale and Nanoscale Physics · Physics 2025-05-30 Peisen Yuan , Beatriz Martín-García , Evgeny Modin , M. Xochitl Aguilar-Pujol , Fèlix Casanova , Luis E. Hueso

A phenomenological theory is developed, that accounts for the collective dynamics of a Bose-Einstein condensate of magnons. In terms of such description we discuss the nature of spontaneous macroscopic interference between magnon clouds,…

Mesoscale and Nanoscale Physics · Physics 2014-07-03 Roberto E. Troncoso , Álvaro S. Núñez

We investigate the correlations of magnons inside a nanomagnet and identify a regime of parameters where the magnons become antibunched, i.e., where there is a large probability for occupation of the single-magnon state. This antibunched…

Mesoscale and Nanoscale Physics · Physics 2020-09-16 H. Y. Yuan , Rembert A. Duine

Magneto-resistance is a physical effect of great fundamental and industrial interest since it is the basis for the magnetic field sensors used in computer read-heads and Magnetic Random Access Memories. As device dimensions are reduced,…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 M. Viret , M. Gabureac , F. Ott , C. Fermon , C. Barreteau , R. Guirado-Lopez

We study arrays of planar Nb Josephson junctions with contacts to intermediate electrodes, which allow measurements of individual junctions and, thus, provide an insight into intricate array dynamics. We observe a robust phase-locking of…

Superconductivity · Physics 2022-08-02 S. Yu. Grebenchuk , R. Cattaneo , T. Golod , V. M. Krasnov

In typical Josephson junctions, the Josephson current is an odd function of the superconducting phase difference. Recently, diode effect in Josephson junctions is observed in experiments wherein the maximum and the minimum values of the…

Superconductivity · Physics 2023-05-08 Abhiram Soori

Non-Hermitian physics has recently attracted much attention in optics and photonics. Less explored is non-Hermitian magnonics that provides opportunities to take advantage of the inevitable dissipation of magnons or spin waves in magnetic…

We study a frequency-dependent noise-to-current ratio for asymmetric, symmetric, and noncommutative current-noise in a ferromagnetic insulating junction, and extract quantum-mechanical properties of magnon transport at low temperatures. We…

Mesoscale and Nanoscale Physics · Physics 2019-04-04 Kouki Nakata , Yuichi Ohnuma , Mamoru Matsuo

We consider the finite-frequency response of multiterminal Josephson junctions and show how non-reciprocity in them can show up at linear response, in contrast to the static Josephson diodes featuring non-linear non-reciprocity. At finite…

Superconductivity · Physics 2024-01-24 Pauli Virtanen , Tero T. Heikkilä

Magnon excitations in antiferromagnetic materials and their physical implications enable novel device concepts not available in ferromagnets, emerging as a new area of active research. A unique characteristic of antiferromagnetic magnons is…

Mesoscale and Nanoscale Physics · Physics 2022-03-14 Hantao Zhang , Ran Cheng

This paper shows that the presence of two dynamical regimes, characterized by different precessional-axis, is the origin of the non-monotonic behavior of the output integrated power for large-amplitude magnetization precession driven by…

Other Condensed Matter · Physics 2009-11-13 G. Siracusano , G. Finocchio , A. La Corte , G. Consolo , L. Torres , B. Azzerboni

A new look at the structure of the electron diffusion region in collisionless magnetic reconnection is presented. The research is based on a particle-in-cell simulation of asymmetric magnetic reconnection, which include a temperature…

We study the diffusive transport of magnons through the compensated ferrimagnetic insulator Gd3Fe5O12 (GdIG). The magnons are injected and detected electrically in a non-local measurement configuration via two parallel Pt strips deposited…

The simultaneous breaking of time-reversal and inversion symmetry, in connection to superconductivity, leads to transport properties with disrupting scientific and technological potential. Indeed, the anomalous Josephson effect and the…

Radiative damping is a strong dissipation source for the quantum emitters hybridized with propagating photons, electrons, or phonons, which is not easily avoidable for on-chip magnonic emitters as well that can radiate via the surface…

Mesoscale and Nanoscale Physics · Physics 2022-09-28 Bowen Zeng , Tao Yu