Multiphysics Modeling of Plasmon-Enhanced All-Optical Helicity-Dependent Switching.

ACS Photonics

Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts 02115, United States.

Published: May 2023


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

In this work, we propose a multiphysics approach to simulate all-optical helicity-dependent switching induced by the local hot spots of plasmonic nanostructures. Due to the plasmonic resonance of an array of gold nanodisks, strong electromagnetic fields are generated within the magnetic recording media underneath the gold nanodisks. We construct a multiphysics framework considering the opto-magnetic and opto-thermal effects, and then model the magnetization switching using the Monte Carlo method. Our approach bridges the gap between plasmonic nanostructure design and magnetization switching modeling, allowing for the simulation of helicity-dependent, nanoscale magnetization switching in the presence of localized surface plasmons.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10621044PMC
http://dx.doi.org/10.1021/acsphotonics.2c01815DOI Listing

Publication Analysis

Top Keywords

magnetization switching
12
all-optical helicity-dependent
8
helicity-dependent switching
8
gold nanodisks
8
switching
5
multiphysics modeling
4
modeling plasmon-enhanced
4
plasmon-enhanced all-optical
4
switching work
4
work propose
4

Similar Publications

Cerebral infarction is a rare but serious complication after pulmonary resection for lung cancer. A 78-year-old man with hypertension and diabetes underwent video-assisted thoracoscopic right middle lobectomy for stage IA2 adenocarcinoma. On postoperative day 1, he developed acute right hemiparesis and motor aphasia.

View Article and Find Full Text PDF

The 180° switching of the perpendicular Néel vector induced by the spin-orbit torque (SOT) presents significant potential for ultradense and ultrafast antiferromagnetic SOT-magnetoresistive random-access memory. However, its experimental realization remains a topic of intense debate. Here, unequivocal evidence is provided for the SOT-induced 180° switching of the perpendicular Néel vector in collinear antiferromagnetic CrO in a Pt/CrO/Co trilayer structure.

View Article and Find Full Text PDF

Precise control of spin states and spin-spin interactions in atomic-scale magnetic structures is crucial for spin-based quantum technologies. A promising architecture is molecular spin systems, which offer chemical tunability and scalability for larger structures. An essential component, in addition to the qubits themselves, is switchable qubit-qubit interactions that can be individually addressed.

View Article and Find Full Text PDF

A novel medium-current (up to 20 mA), low normalized beam emittance (<1 π mm mrad) electron cyclotron resonance microwave H+ ion source has been developed at the Center for Energy Research in Budapest, Hungary. This high-stability design targets an energy ripple below 1% while delivering a continuous or pulsed proton beam with adjustable pulse duration (0.1-10 ms) and frequency (0.

View Article and Find Full Text PDF

Distinct association of HRAS and KRAS with Mn ion illustrated by paramagnetic NMR.

Magn Reson Lett

February 2025

State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China.

Rat sarcoma virus oncogene (RAS) proteins are of crucial oncogenic proteins and are involved in several essential intracellular processes. The RAS protein has an intrinsic metal binding site for Mg, which is important for the conformational stability of the active site. Recently, it was reported that a second metal ion binding site, located further from the active site in HRAS (Harvey RAS homolog), binds Ca with millimolar affinity.

View Article and Find Full Text PDF