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arXiv 2023年

作者： Kritzell, T. Elijah Baydin, Andrey Tay, Fuyang Rodriguez, Rodolfo Nojiri, Hiroyuki Everitt, Henry O. Barsukov, Igor Kono, Junichiro Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Smalley-Curl Institute Rice University HoustonTX77005 United States Physics and Astronomy University of California RiversideCA92521 United States Institute for Materials Research Tohoku University Sendai980-8577 Japan DEVCOM Army Research Laboratory-South HoustonTX77005 United States Department of Physics and Astronomy Rice University HoustonTX77005 United States Department of Material Science and NanoEngineering Rice University HoustonTX77005 United States

Hybrid light-matter coupled states, or polaritons, in magnetic materials have attracted significant attention due to their potential for enabling novel applications in spintronics and quantum information processing. However, most studies to date have been carried out for ferromagnetic materials with magnon excitations at gigahertz frequencies. Here, we have investigated strong resonant photon-magnon coupling at frequencies above 1 terahertz for the first time in a prototypical room-temperature antiferromagnetic insulator, NiO, inside a Fabry-Pérot cavity. The cavity was formed by the crystal itself when it was thinned down to an optimized thickness. By using terahertz time-domain spectroscopy in high magnetic fields up to 25 T, we swept the magnon frequency through Fabry-Pérot cavity modes and observed photon-magnon anticrossing behavior, demonstrating clear vacuum Rabi splittings exceeding the polariton linewidths. These results show that NiO is a promising platform for exploring antiferromagnetic spintronics and cavity magnonics in the terahertz frequency range. Copyright © 2023, The Authors. All rights reserved.

关键词： Polariton

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Deep-Strong Coupling between Cavity Photons and Terahertz TO Phonons in PbTe

Deep-Strong Coupling between Cavity Photons and Terahertz TO...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Andrey Baydin Manukumara Manjappa Sobhan Subhra Mishra Hongjing Xu Fuyang Tay Dasom Kim Felix G. G. Hernandez Paulo H. O. Rappl Eduardo Abramof Ranjan Singh Junichiro Kono Department of Electrical and Computer Engineering Rice University Houston Texas USA Smalley-Curl Institute Rice University Houston Texas USA Instrumentation and Applied Physics Department Indian Institute of Science Bangalore India Center for Disruptive Photonic Technologies The Photonics Institute Nanyang Technological University Singapore Department of Physics and Astronomy Rice University Houston Texas USA Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston Texas USA Instituto de Física Universidade de São Paulo São Paulo SP Brazil Laboratório Associado de Sensores e Materiais Instituto Nacional de Pesquisas Espaciais São José dos Campos SP Brazil Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore Department of Material Science and NanoEngineering Rice University Houston Texas USA

We have investigated the resonant coupling of photons with TO phonons in lead telluride in small-mode-volume terahertz cavities, observing a giant vacuum Rabi splitting on the order of the bare cavity–phonon frequency.

ISBN: (纸本)9781957171258

关键词： Electric fields Numerical simulation Optical constants Photons Physical vapor deposition Terahertz spectroscopy

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Terahertz Cavity Phonon Polaritons in the Deep-Strong Coupling Regime

Terahertz Cavity Phonon Polaritons in the Deep-Strong Coupli...

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International Conference on Infrared and Millimeter Waves

作者： Andrey Baydin Manukumara Manjappa Sobhan Subhra Mishra Hongjing Xu Jacques Doumani Fuyang Tay Dasom Kim Felix G. G. Hernandez Paulo H. O. Rappl Eduardo Abramof Ranjan Singh Junichiro Kono Department of Electrical and Computer Engineering Rice University Houston TX USA Smalley-Curl Institute Rice University Houston TX USA Department of Instrumentation and Applied Physics Indian Institute of Science Bangalore India Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore Department of Physics and Astronomy Rice University Houston TX USA Applied Physics Graduate Program Smalley-Curl Institute Rice University Houston TX USA Instituto de Física Universidade de São Paulo São Paulo SP Brazil Laboratório Associado de Sensores e Materiais Instituto Nacional de Pesquisas Espaciais São José dos ampos SP Brazil Center for Disruptive Photonic Technologies The Photonics Institute Nanyang Technological University Singapore Department of Material Science and NanoEngineering Rice University Houston TX USA

We have studied the resonant and nonperturbative coupling of transverse optical phonons in lead telluride with photons in small-mode-volume terahertz cavities, observing a giant vacuum Rabi splitting on the order of the uncoupled phonon and cavity frequencies. Our terahertz time-domain spectroscopy experimental data, systematically collected as a function of sample thickness, temperature, and cavity length, can be well reproduced by our electromagnetic simulations. These results demonstrate that this uniquely tunable platform is promising for realizing and understanding predicted cavity-vacuum-induced ferroelectric instabilities, as well as for exploring applications of light-matter coupling in the ultra-and deep-strong coupling regimes in quantum technology.

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Linewidth broadening induced by fundamental thermal fluctuations in metallo-dielectric nanolasers

Linewidth broadening induced by fundamental thermal fluctuat...

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CLEO: Applications and Technology, CLEO_AT 2020

作者： Jiang, Sizhu Pan, Si Hui Deka, Suruj S. Chengyi-Fang Chen, Zijun Fainman, Yeshaiahu El Amili, Abdelkrim Department of Electrical and Computer Engineering University of California San Diego San DiegoCA92093-0407 United States Department of Physics University of California San Diego San DiegoCA92093-0407 United States Material Science and Engineering Program University of California San Diego San DiegoCA92093-0407 United States

We demonstrate that the fundamental thermal fluctuations can induce significant linewidth broadening effect in metallo-dielectric nanolasers through numerical simulation. Broader linewidths are observed with the decre... 详细信息

ISBN: (数字)9781943580767

ISBN: (纸本)9781557528209

关键词： Linewidth

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Linewidth Broadening Induced by Fundamental Thermal Fluctuations in Metallo-Dielectric Nanolasers

Linewidth Broadening Induced by Fundamental Thermal Fluctuat...

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2020 Conference on Lasers and Electro-Optics, CLEO 2020

作者： Jiang, Sizhu Pan, Si Hui Deka, Suruj S. Chengyi-Fang Chen, Zijun Fainman, Yeshaiahu Amili, Abdelkrim El Department of Electrical and Computer Engineering University of California San Diego San DiegoCA92093-0407 United States Department of Physics University of California San Diego San DiegoCA92093-0407 United States Material Science and Engineering Program University of California San Diego La Jolla CA92093-0407 United States

ISBN: (纸本)9781943580767

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Facile Li-Ion Transport via LLTO Scaffold with Crosslinked Polyethylene Glycol Composite Electrolyte for Solid-State Batteries

SSRN

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SSRN 2025年

作者： Lee, Jungkuk Counihan, Michael J. Barai, Pallab Burns, Meghan E. Singh, Vibhu V. Jamnuch, Sasawat Pascal, Tod A. Shrinivasan, Venkat Tepavcevic, Sanja Zhang, Yuepeng Applied Materials Division Argonne National Laboratory LemontIL60439 United States Materials Science Division Argonne National Laboratory LemontIL60439 United States Department of Chemistry University of Illinois Chicago ChicagoIL60607 United States ATLAS Materials Physics Lab Aiiso Yufeng Li Family Department of Chemical and Nano Engineering University of California San Diego La Jolla CA92093 United States Microscopy and Microanalysis Research Group Materials Measurement Science Division National Institute of Standards and Technology GaithersburgMD20899 United States Material Science and Engineering Program University of California San Diego La Jolla CA92093 United States Chemical Sciences and Engineering Division Argonne National Laboratory LemontIL60439 United States

Composite polymer electrolytes (CPEs) hold significant promise for solid-state batteries due to their ability to combine the benefits of inorganic fillers and polymer matrices. However, agglomeration of inorganic fillers can disrupt the formation of a percolation pathway, hindering lithium-ion transport. Here, we developed a stable, porous, and interconnected 3-dimentional LLTO (Li0.33La0.557TiO3) nanofiber scaffold and fabricate CPEs using in-situ crosslinked polyethylene glycol (xPEG). The resulting self-standing LLTOxPEG-65 achieved an ionic conductivity of 5.0 × 10−4 S/cm at 30 °C and a critical current density of 0.5 mA/cm2. A significantly lower activation energy (~0.2 eV) was observed in LLTOxPEG-65 compared to pristine xPEG (0.44 eV), indicating a transition of lithium-ion transport pathways from xPEG to the LLTO scaffold. However, increasing the xPEG content led to a decrease in ionic conductivity and a rise in activation energy, approaching that of pristine xPEG. DFT calculations revealed that Li+ transport in the [010] and [001] planes of LLTO predominantly takes place within the bulk rather than along the surface, while a concerted diffusion mechanism was observed in the [100] plane. Additionally, mesoscale-level computational analysis indicated that the high LLTO scaffold fraction (90 wt %) can ensure transport through the bulk of the fibers even with larger interfacial charge transfer resistance, around 1 Ω·cm2 between LLTO and xPEG. Presence of the highly percolated LLTO scaffold helps to promote efficient Li+ transport through the bulk of LLTO. © 2025, The Authors. All rights reserved.

关键词： Activation energy

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Evolution of Incommensurate Charge Density Waves Quantified with In Situ TEM

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Microscopy and Microanalysis 2024年第SUPPLEMENT_1期30卷

作者： Shen, Jeremy M Sung, Suk Hyun Agarwal, Nishkarsh Stangel, Alex Hovden, Robert Department of Electrical and Computer Engineering University of Michigan Ann Arbor MI USA Rowland Institute at Harvard Harvard University Cambridge MA USA Department of Material Science and Engineering University of Michigan Ann Arbor MI USA Applied Physics Program University of Michigan Ann Arbor MI USA

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Identification of Magnetite material (Fe3O4) Based on Natural materials as Catalyst for Industrial Raw material Application 1

Identification of Magnetite Material (Fe3O4) Based on Natura...

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1st International Conference on Education, Science and Technology, ICON-EST 2018

作者： Maulinda Zein, Ikramullah Jalil, Zulkarnain Industrial Engineering Study Program Engineering Faculty of Serambi Mekkah University Banda Aceh Indonesia Material Physics Laboratory Department of Physics Faculty of Mathematics and Natural Science SyiahKuala University Banda Aceh Indonesia

Identification of magnetite nanoparticles synthesized from natural iron sand with a chemical treatment that is by using thecoprecipitation method on temperature and heated spaces, using a pair of acids and bases, i.e. HCL as a solvent NH4OH and as its precipation. The Crystal structure, the percentage of elements, the particle size and properties of the magnetism material characterization by XRD, XRF identification testing, and permagraph. From the results obtained in the Analysis that the value of the percentage purity of Fe3O4 are derived from Natural Sands before Extraction is of 81.42%, and once on extract 86.73% increase to its purity. From the results of the analysis of properties of ferrite magnet to Fe3O4from sand iron retrieved the value of Saturation Magnetization (Ms) produced amounted to 0.29 T, or residual magnetization Remanence (Br) of 0081 T, and Coercivityy(Hc) amounted to 1.82 kA/m expected data analysis results may explain the comparison characteristics in structure and magnetic properties of material with a natural sand Fe3O4 Aldrich so it can be an additional related information value added (added value) the local SDA. © Published under licence by IOP Publishing Ltd.

关键词： Magnetite

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Terahertz Cavity Phonon Polaritons in Lead Telluride in the Deep-Strong Coupling Regime

arXiv

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arXiv 2025年

作者： Baydin, Andrey Manjappa, Manukumara Mishra, Sobhan Subhra Xu, Hongjing Doumani, Jacques Tay, Fuyang Kim, Dasom Rappl, Paulo H.O. Abramof, Eduardo Singh, Ranjan Hernandez, Felix G.G. Kono, Junichiro Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Smalley–Curl Institute Rice University HoustonTX77005 United States Rice Advanced Materials Institute Rice University HoustonTX77005 United States Instrumentation and Applied Physics Department Indian Institute of Science Bangalore560012 India Center for Disruptive Photonic Technologies The Photonics Institute Nanyang Technological University 639798 Singapore Department of Physics and Astronomy Rice University HoustonTX77005 United States Applied Physics Graduate Program Smalley–Curl Institute Rice University HoustonTX77005 United States Group of Research and Development in Materials and Plasma National Institute for Space Research São José dos Campos São Paulo12201-970 Brazil Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 637371 Singapore Instituto de Física Universidade de São Paulo São Paulo05508-090 Brazil Department of Material Science and NanoEngineering Rice University HoustonTX77005 United States

Lead telluride is an important thermoelectric material due to its large Seebeck coefficient combined with its unusually low thermal conductivity that is related to the strong anharmonicity of phonons in this material. Here, we have studied the resonant and nonperturbative coupling of transverse optical phonons in lead telluride with cavity photons inside small-mode-volume metallic metasurface cavities that have photonic modes with terahertz frequencies. We observed a giant vacuum Rabi splitting on the order of the bare phonon and cavity frequencies. Through terahertz time-domain spectroscopy experiments, we systematically studied the vacuum Rabi splitting as a function of sample thickness, temperature, and cavity length. Under the strongest light–matter coupling conditions, the strength of coupling exceeded the bare phonon and cavity frequencies, putting the system into the deep-strong coupling regime. These results demonstrate that this uniquely tunable platform is promising for realizing and understanding predicted cavity-vacuum-induced ferroelectric instabilities and exploring applications of light–matter coupling in the ultrastrong and deep-strong coupling regimes in quantum technology. Copyright © 2025, The Authors. All rights reserved.

关键词： Phonons

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Surface-Wave Coupling in Double Floquet Sheets Supporting Phased Temporal Wood Anomalies

arXiv

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arXiv 2022年

作者： Tsai, Ya-Wen Wang, Yao-Ting Galiffi, Emanuele Alù, Andrea Yen, Ta-Jen Department of Material Sciences and Engineering National Tsing Hua University Hsinchu300 Taiwan DepartmentofMathematics ImperialCollege London LondonSW7 2AZ United Kingdom Photonics Initiative Advanced Science Research Center City University of New York New YorkNY10031 United States Physics Program Graduate Center of the City University of New York New YorkNY10016 United States

We investigate symmetry-selective surface-mode excitation in a general periodically time-modulated double-layer system, where the modulation of the two layers has a constant phase difference. By deriving a semi-analytic transfer matrix formalism of a Drude-dispersive double-layer structure with periodic time-modulation, we calculate the scattering amplitudes and the corresponding transmission coefficient. Our results show that the phase-difference between the modulation of the two sheets plays an essential role in significantly enhancing and selectively exciting either the even or odd surface mode with high efficiency. We verify our calculations with full-wave time-domain simulations, showing that efficient switching between the surface-wave excitation of the two distinct modal channels can be achieved, even under illumination froma single off-resonant Gaussian pulse, by controlling the phase difference between the two modulations. Our results pave the way towards ultrafast, symmetry-selective mode excitation and switching via temporalmodulation. © 2022, CC BY.

关键词： Modulation

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