🔬 Category

physics.app-ph

91 papers

Physical mechanisms of ohmic contact and tunnel diode: A novel explanation in terms of impurity-photovoltaic-effect resulting from infrared self-emission at room-temperature

This paper proposes a novel particle-based explanation for ohmic contacts and tunnel diodes, attributing their behavior to an impurity-photovoltaic effect where infrared self-emission from room-temperature blackbody radiation generates defect-mediated carriers that are swept by the junction's built-in field, thereby complementing the traditional quantum-mechanical tunneling model.

Jianming LiTue, 10 Ma🔬 physics.app-ph

Interleaved diffractive networks for information transfer through random diffusers

This paper introduces and validates a cascaded, all-optical interleaved diffractive network, optionally coupled with a digital neural network, that successfully recovers optical information transmitted through random and unknown diffusers without requiring digital pre-processing, demonstrating potential applications in biomedical imaging and telecommunications.

Yuhang Li, Yiyang Wu, Shiqi Chen, Xilin Yang, Aydogan OzcanTue, 10 Ma🔬 physics.optics

Impact of refractive index heterogeneity on stimulated Brillouin scattering microscopy: a quantitative analysis

This study quantitatively demonstrates that refractive index heterogeneity in samples distorts focal fields and reduces pump-probe overlap in stimulated Brillouin scattering microscopy, leading to attenuated gain and degraded precision while invalidating fiber-coupling efficiency as a linear proxy for Brillouin gain.

Meng Xu, Zixuan Du, Yun Qi, Jinrui Zhang, Shuai Yao, Robert Prevedel, Fan YangTue, 10 Ma🔬 physics.optics

In situ magnetic-field stabilization for quantum-gas experiments

This paper presents a minimally destructive, in situ technique that utilizes ultracold Rb-87 atoms themselves as a built-in magnetometer to measure and stabilize slowly drifting magnetic fields via weak measurements and Kalman filtering, effectively eliminating long-term drift while maintaining high precision.

E. Gvozdiovas, A. Valdés-Curiel, Q. -Y. Liang, E. D. Mercado-Gutierrez, A. M. Piñeiro, J. Tao, D. Trypogeorgos, M. Zhao, I. B. SpielmanTue, 10 Ma🔬 physics.atom-ph

Atomistic Framework for Glassy Polymer Viscoelasticity Across Twenty Frequency Decades

This paper presents an extended non-affine deformation theory incorporating a time-dependent memory kernel within the Generalized Langevin Equation, which successfully predicts the viscoelastic response of poly(methyl methacrylate) across twenty frequency decades and validates these findings against diverse experimental and computational methods.

Ankit Singh, Vinay Vaibhav, Caterina Czibula, Astrid Macher, Petra Christoefl, Karin Bartl, Gregor Trimmel, Timothy W. Sirk, Alessio ZacconeTue, 10 Ma🔬 cond-mat.mtrl-sci

Nanoscale imaging reveals critical plating and stripping mechanisms in anode-free lithium and sodium solid-state batteries

This study introduces virtual-electrode low-energy electron microscopy (VE-LEEM) to reveal that while lithium and sodium plating in anode-free solid-state batteries follows a universal dynamic scaling regime, their stripping mechanisms are intrinsically asymmetric, proceeding through grain-boundary unzipping and cluster decay that leave persistent interfacial residues, thereby overturning the assumption of mirrored plating-stripping dynamics.

J. Diaz-Sanchez, P. Hernandez-Martin, N. Kwiatek-Maroszek, H. R. Bratlie, R. Anton, A. Lowack, A. Galindo, K. Kataoka, E. Vasco, K. Nikolowski, D. Rettenwander, E. G. Michel, M. A. Nino, M. Foerster, C. PolopTue, 10 Ma🔬 cond-mat.mtrl-sci

Embedded Ferroelectric Nanoclusters can drive Polarization Reversal in a Non-Ferroelectric Polar Film via the Proximity Effect

This study demonstrates that embedding ferroelectric Al1-xScxN nanoclusters within a nominally non-switchable AlN film can induce polarization reversal in the AlN at significantly reduced coercive fields via a proximity effect, offering a pathway to activate "frozen" ferroelectrics for advanced technological applications.

Anna N. Morozovska, Eugene A. Eliseev, Sergei V. Kalin, Long-Qing Chen, Dean R. Evans, Venkatraman GopalanTue, 10 Ma🔬 cond-mat.mtrl-sci

Simulating the electrostatic patch force in experimental geometries

This paper presents a finite-element method model capable of accurately simulating electrostatic patch forces in complex, realistic experimental geometries—including those with roughness, edges, and curvature—by utilizing Voronoi diagrams or Kelvin Probe Force Microscopy data to provide reliable estimates of parasitic forces relevant to Casimir force measurements and gravitational wave interferometers.

Matthijs H. J. de Jong, Laure Mercier de LépinayTue, 10 Ma🔬 cond-mat.mes-hall

Pressure-Induced Metal-Insulator and Paramagnet-Altermagnet Transitions in Rutile OsO2 Single Crystals

By synthesizing high-quality rutile OsO2 single crystals, researchers discovered that while the material is initially a paramagnetic metal, applying high pressure (44 GPa) induces a metal-insulator transition and drives a phase change into an altermagnetic state, demonstrating that external pressure can effectively tune its magnetic ground state.

Guojian Zhao, Ziang Meng, Wencheng Huang, Peixin Qin, Shaoheng Ruan, Liang Ma, Lin Zhu, Yuzhou He, Li Liu, Zhiyuan Duan, Xiaoning Wang, Hongyu Chen, Sixu Jiang, Jingyu Li, Xiaoyang Tan, K. Ozawa, Bosen Wang, Jinguang Cheng, Qinghua Zhang, Jianfeng Wang, Chaoyu Chen, Zhiqi LiuTue, 10 Ma🔬 cond-mat.mes-hall

Flux Trapping Characterization for Superconducting Electronics Using a Cryogenic Widefield NV-Diamond Microscope

This paper introduces a cryogenic widefield NV-diamond microscope that enables rapid, micrometer-scale imaging of magnetic flux trapping in superconducting devices, revealing critical vortex expulsion behaviors in Nb thin films and offering a high-throughput tool for improving the reliability of scalable superconducting electronics.

Rohan T. Kapur, Pauli Kehayias, Sergey K. Tolpygo, Adam A. Libson, George Haldeman, Collin N. Muniz, Alex Wynn, Nathaniel J. O'Connor, Neel A. Parmar, Ryan Johnson, Andrew C. Maccabe, John Cummings, Justin L. Mallek, Danielle A. Braje, Jennifer M. SchlossTue, 10 Ma⚛️ quant-ph

Geometry-Controlled Excitonic Emission Engineering in Monolayer MoS2 Using Plasmonic Hollow Nanocavities

This study numerically demonstrates that vertically oriented hollow gold nanocavities coupled to monolayer MoS2 can spectrally tune and significantly enhance A and B excitonic emission through geometry-controlled plasmon resonance, achieving up to 144-fold photoluminescence increases and enabling precise engineering of excitonic peak ratios for advanced valleytronic and sensing applications.

Abdullah Efe Yildiz, Emre Ozan PolatTue, 10 Ma⚛️ quant-ph

Fractional Topological Phases, Flat Bands, and Robust Edge States on Finite Cyclic Graphs via Single-Coin Split-Step Quantum Walks

This paper reports the first realization of fractional topological phases, characterized by ±12\pm \frac{1}{2} winding numbers and robust edge states, in a fully unitary, noninteracting single-coin split-step quantum walk on finite cyclic graphs, demonstrating how step-dependent protocols enable the engineering of flat bands and unconventional bulk-boundary correspondence in small-scale synthetic quantum systems.

Dinesh Kumar Panda, Colin BenjaminTue, 10 Ma⚛️ quant-ph

Impact of Layer Structure and Strain on Morphology and Electronic Properties of InAs Quantum Wells on InP (001)

This study investigates how layer structure and strain influence the electronic properties and surface morphology of InAs/InGaAs quantum wells on InP (001), revealing that layer design dictates mobility anisotropy, excessive thickness triggers quantum well collapse, and quantum confinement significantly affects band nonparabolicity.

Zijin Lei, Yuze Wu, Christian Reichl, Stefan Fält, Werner WegscheiderTue, 10 Ma⚛️ quant-ph

Quantum Technologies and Edge Devices in Electrical Grids: Opportunities, Challenges, and Future Directions

This paper explores how integrating quantum computing, sensing, and communication technologies into electrical grid edge devices can overcome the limitations of traditional systems by enabling faster optimization, atomic-precision measurements, and information-theoretic security, while also addressing the associated challenges and future directions.

Marjorie Hoegen, René Glebke, M. Sahnawaz Alam, Alessandro David, Juan Navarro Arenas, Nikolaus Wirtz, Mario Albanese, Daniele Carta, Felix Motzoi, Antonello Monti, Carsten Schuck, Andrea Benigni, Klaus Wehrle, Ferdinanda PonciTue, 10 Ma⚛️ quant-ph

Vectorial engineering of second-harmonic generation in silicon-based waveguides integrated with 2D materials

This paper demonstrates that accounting for the full vectorial and tensorial nature of electromagnetic fields and second-order susceptibility in silicon nitride waveguides integrated with monolayer MoS2_2 enables efficient, phase-matched cross-polarized second-harmonic generation, achieving a 220-fold enhancement over free-space excitation and establishing fundamental design guidelines for 2D-material-based nonlinear photonic devices.

Mohd Rehan, Nathalia B. Tomazio, Alisson R. Cadore, Daniel F. Londono-Giraldo, Daniel A. Matos, Gustavo S. Wiederhecker, Christiano J. S. de MatosThu, 12 Ma🔬 physics.app-ph

An Atlas of Extreme Properties in Cubic Symmetric Metamaterials

This paper presents a comprehensive atlas of approximately 1.95 million cubic symmetric metamaterials derived from all 36 cubic space groups, revealing extreme mechanical properties like high bulk-to-shear ratios and negative Poisson's ratios, while introducing a 3D convolutional neural network surrogate model to accelerate the discovery and design of such architected materials.

Sahar Choukir, Nirosh Manohara, Chandra Veer SinghThu, 12 Ma🔬 physics.app-ph