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Magnetic field ($H$)-dependent optical conductivity spectra $\sigma (\omega) $ and dielectric constant spectra $\epsilon (\omega)$ of a layered antiferromagnet ($A$-type) Pr$_{1/2}$Sr$_{1/2}$MnO$_3$ were presented. At 0.0 T in 4.2 K, the…

Strongly Correlated Electrons · Physics 2009-10-31 J. H. Jung , H. J. Lee , T. W. Noh , Y. Moritomo , Y. J. Wang , X. Wei

Extreme field localization and giant field enhancement are often achieved by using plasmonic nanostructures and metamaterials such as strongly coupled silver nanoparticles.Dielectric particles and structures can focus light beyond the…

The spin-noise spectroscopy (SNS) method implies high efficiency of conversion of the spin-system magnetization to the Faraday rotation angle. Generally, this efficiency cannot be estimated using the characteristics of the regular…

Mesoscale and Nanoscale Physics · Physics 2021-12-01 A. N. Kamenskii , G. G. Kozlov , E. I. Baibekov , B. Z. Malkin , M. Bayer , A. Greilich , V. S. Zapasskii

Optical microresonators have proven powerful in a wide range of applications, including cavity quantum electrodynamics, biosensing, microfludics, and cavity optomechanics. Their performance depends critically on the exact distribution of…

We report the observation of enhanced magneto-optic rotation as the coherent superposition of different hyperfine states is established in an atomic sample. The polarization rotation near the two photon Raman resonance condition appears to…

Optics · Physics 2012-04-16 S. Pradhan , A. Kani , Harshawardhan Wanare , R. Behera , A. K. Das

Plasmonic Faraday rotation in nanowires manifests itself in the rotation of the spatial intensity distribution of high-order surface plasmon polariton (SPP) modes around the nanowire axis. Here we predict theoretically the giant Faraday…

The Brownian dynamics of an optically trapped water droplet are investigated across the transition from over to under-damped oscillations. The spectrum of position fluctuations evolves from a Lorentzian shape typical of over-damped systems…

Statistical Mechanics · Physics 2007-07-05 R. Di Leonardo , G. Ruocco , J. Leach , M. J. Padgett , A. J. Wright , J. M. Girkin , D. R. Burnham , D. McGloin

We demonstrate room temperature detection of single 20 nm super-paramagnetic nanoparticles (SPNs) with a wide-field optical microscope platform suitable for biological integration. The particles are made of magnetite (Fe3O4) and are thus…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 Michael Gould , Russell Barbour , Nicole Thomas , Hamed Arami , Kannan M. Krishnan , Kai-Mei Fu

This work provides a detailed investigation of the measured in-plane field-swept homodyne-detected ferromagnetic resonance (FMR) spectra of an extended Co/Cu/NiFe pseudo spin valve stack using a nanocontact (NC) geometry. The…

Mesoscale and Nanoscale Physics · Physics 2016-05-25 Masoumeh Fazlali , Mykola Dvornik , Ezio Iacocca , Philipp Dürrenfeld , Mohammad Haidar , Johan Åkerman , R. K. Dumas

We study the dynamics of paramagnetic molecular superrotors in an external magnetic field. Optical centrifuge is used to create dense ensembles of oxygen molecules in ultra-high rotational states. It is shown for the first time, that the…

Quantum Physics · Physics 2015-06-10 A. A. Milner , A. Korobenko , J. Floß , I. Sh. Averbukh , V. Milner

It is proposed a novel method of the spectrally selective detection of the short spin waves (or magnons) by means of the transverse magneto-optical (MO) intensity effect in transmission in the magnetoplasmonic nanostructure. The method is…

Optics · Physics 2021-05-07 Olga V. Borovkova , Savelii V. Lutsenko , Andrey N. Kalish

The maps of intensity and polarization of the radio synchrotron emission from shell-type supernova remnants (SNRs) contain a considerable amount of information, although of not easy interpretation. With the aim of deriving constraints on…

High Energy Astrophysical Phenomena · Physics 2016-03-23 Rino Bandiera , Oleh Petruk

The ability to engineer localized surface plasmon resonances at large scale usually relies on precise nanoscale patterning. Here, we demonstrate that mid-infrared plasmonic responses can instead emerge in unpatterned polysilicon films…

Recent advances in magnonics highlight the need for employing spin wave characteristics as new state variables, which is to be detected and mapped out with high precision in all-onchip, small scale devices. Spin wave modes that are prompted…

Mesoscale and Nanoscale Physics · Physics 2025-04-22 Junming Wu , Dinesh Wagle , Yuzan Xiong , Andrew Christy , Yi Li , Shihao Zhou , James F. Cahoon , Xufeng Zhang , M. Benjamin Jungfleisch , Wei Zhang

Spin noise spectroscopy (SNS) is a new method for studying magnetic resonance and spin dynamics based on measuring the Faraday rotation noise. In strong contrast with methods of nonlinear optics, the spectroscopy of spin noise is considered…

Mesoscale and Nanoscale Physics · Physics 2015-04-28 M. M. Glazov , V. S. Zapasskii

We have proposed the use of surface plasmon resonances at the interface of hybrid magneto-photonic heterostructures [Opt. Mat. Exp., 7, 4316 (2017)] for all-optical control of the macroscopic spin orientation in nanostructures in fs time…

We present a near-field diffraction model for spin waves in perpendicularly magnetized films applicable in any geometries of excitation fields. This model relies on Kalinikos-Slavin formalism to express the dynamic susceptibility tensor in…

Other Condensed Matter · Physics 2023-02-22 V. Vlaminck , L. Temdie , V. Castel , M. B. Jungfleisch , D. Stoeffler , Y. Henry , M. Bailleul

We conduct systematic studies of the optical characteristics of plasmonic nanoparticles that exhibit C2v symmetry. We analyze three distinct geometric configurations: an L-type shape, a crescent, and a split-ring resonator. Optical…

Optics · Physics 2024-05-24 Michael R. Clark , Syed A. Shah , Andrei Piryatinski , Maxim Sukharev

Invisibility dips, minima in scattering spectrum associated with asymmetric Fano-like line-shapes, have been predicted with transformation optics in studying strong coupling between two plasmonic nanoparticles. This feature of strongly…

Optics · Physics 2016-10-17 Fei Gao , Zhen Gao , Yu Luo , Baile Zhang

Near surface silver nanoparticles embedded in silicon oxide were obtained by 40 keV silver negative ion implantation without the requirement of an annealing step. Ion beam induced local heating within the film leads to an exo-diffusion of…