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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.
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http://dx.doi.org/10.1021/acsphotonics.2c01815 | DOI Listing |
Cureus
August 2025
Division of Thoracic and Cardiovascular Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, JPN.
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 PDFAdv Mater
September 2025
College of Physics, Donghua University, Shanghai, 201620, China.
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 PDFNat Commun
September 2025
Physikalisches Institut, Karlsruhe Institute of Technology, Karlsruhe, Germany.
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 PDFRev Sci Instrum
September 2025
HUN-REN Centre for Energy Research, Budapest, Hungary.
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 PDFMagn 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.
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