Arash Simchi’s Post

Excited to share our latest open-access publication in the Journal of Applied Physics: “Strain-engineered anomalous Nernst effect and layer-polarized anomalous Hall response in RuBr₂.” In this work, we explore how strain tuning can significantly enhance the anomalous Nernst and Hall responses in 2D RuBr₂, also revealing its potential for next-generation thermoelectric and multiferroic devices. Read the full article here: https://lnkd.in/grbeDQdR

Happy to share that our work, which started as an undergraduate project, was recently published in the journal Physical Review Accelerators and Beams (Phys. Rev. Accel. Beams 28, 083401). Instead of treating muons merely as background in dark photon searches for an electron-on-target experiment, we conducted a feasibility study of muon-source technology using high-repetition-rate GeV-pulsed electron beams in Shanghai.  We will soon conduct beam tests to verify the simulation results. https://lnkd.in/gcjVw3Yc

Microtest Group is pleased to participate in TWEPP 2025, the Topical Workshop on Electronics for Particle Physics, bringing together experts from academia, research, and industry to advance electronics for particle and accelerator instrumentation. Organized by the University of West Attica and the National Technical University of Athens, with support from CERN, the workshop covers all aspects of electronic systems, components, and instrumentation for particle and astro-particle systems. Alessandro Iovene #TWEPP2025 #ParticlePhysics  

Proud to share our new article in the Journal of Applied Physics: “Use of Cu/Ta₂O₅/Cu Fabry–Pérot cavities as large-area transparent electrodes for Si photovoltaic devices.” We demonstrate a scalable Cu/Ta₂O₅/Cu FP cavity that serves as both antireflection layer and transparent electrode for Si PV. DOI: 10.1063/5.0287420 #MaterialsScience #Photovoltaics #TransparentElectrodes #FabryPerot #ThinFilms #AppliedPhysics #Nanotechnology

Excited to share our recent publication in the Journal of Applied Physics. In this study, we present a combined theoretical and experimental study of CoZnMn alloys, revealing their complex magnetic structures and intriguing transport properties. Read the full article here: https://lnkd.in/gG5BtCRs #CSIR-NPL #Hall effect #Magnetic Skyrmion

Our Director Prof Jon Heffernan FREng and Head of MOVPE, Dr Elisa Maddalena Sala, have co-authored a paper with the Department of Physics at The University of Sheffield and TU Dortmund University which has been recently published in Physical Review B. The paper titled 'Spin properties in droplet epitaxy grown telecom quantum dots' explores the spin properties of telecom C-band Quantum Dots grown by droplet epitaxy with our ‘JR’ MOVPE showerhead reactor in Sheffield. Results were compared to other QDs of the same type but grown with different techniques. Our results demonstrate that our QDs exhibit favourable spin properties for implementation in quantum information applications. Click below to read the full article: https://lnkd.in/eDbTds6x

⚛ Featured in Modern Physics Letters B 📘 Nature of Andreev Bound States in Josephson Junctions of Triple-Point Semimetals  Author: Ipsita Mandal(Shiv Nadar Institution of Eminence (SNIoE)) This study explores superconductor–barrier–superconductor (S-B-S) Josephson junctions formed from two- and three-dimensional triple-point semimetals, materials distinguished by their threefold band degeneracy. Assuming a weak and homogeneous s-wave pairing in the superconducting regions, and a potential barrier created by a normal-state semimetal, the paper derives the Andreev bound state (ABS) wavefunctions and discrete energy eigenvalues (±|ε|) in the thin-barrier limit. Unlike graphene and Weyl semimetals, where only one ABS solution emerges, the multifold fermionic nature of triple-point semimetals yields two distinct ABS solutions, leading to new insights into quantum transport and Josephson current behavior across S-B-S junctions. 🔗 Free to read until December 31, 2025: https://lnkd.in/gPeK_Rtz #CondensedMatterPhysics #Superconductivity #JosephsonJunctions #AndreevBoundStates #TriplePointSemimetals #QuantumTransport #TopologicalMaterials #QuantumPhysics #ModernPhysicsLettersB #WorldScientific #ScientificResearch 

Big things are happening in USD’s physics lab! 🔬 Researchers have successfully created a high-purity germanium detector using their new NSF-supported AJA sputtering system—a major step toward advancing detector technology. ⚙️🔋 Learn more 👉 https://yote.us/4gZ5nf5

Preserving particle physics data 📊 A lot of the science from our accelerators is published long after collisions end, so storing experimental data for future physicists is crucial. Find out more: https://lnkd.in/ep8Q7HwJ

【Is triboelectricity confusing, confused or complex?】 Reports on Progress in Physics (IF 20.7) Pub Date : 2025-10-09 , DOI:10.1088/1361-6633/ae08cb In this report, we look at the fundamental physics of triboelectricity, charge transfer due to contact and sliding. While much of the report focuses upon recent advances such as the incorporation of flexoelectric contributions, we also include older work, some from centuries ago, which can only now be fully understood. Basic concepts and theories ranging from elements of tribology and contact mechanics through semiconductor built-in potentials, electromechanical terms, mechanochemistry and trap states are briefly described, linking to established surface science and interface physics. We then overview the main models that have been proposed, showing that they all fall within conventional electrostatics combined with other established science. We conclude with some suggestions for the future. Based upon this overview, our conclusion is that triboelectricity is a slightly complex combination of classic tribology and standard electrostatic phenomena that can be understood using the generalized Ampère’s law connecting the electric displacement field with both Coulomb and polarization contributions, and the free carrier density, that is  . Triboelectricity may be confusing, it is not really confused if care is taken, but it is complex. DOI 10.1088/1361-6633/ae08cb