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X-ray photoelectron diffraction is a powerful tool for determining the structure of clean and adsorbate-covered surfaces. Extending the technique into the ultrafast time domain will open the door to studies as diverse as the direct…

High-Field Electron Spin Resonance measurements were made on powder samples of Cu_{1-x}Zn_{x}GeO_{3} (x=0.00, 0.01, 0.02, 0.03 and 0.05) at different frequencies (95, 110, 190, 220, 330 and 440 GHz) at low temperatures. The spectra of the…

Strongly Correlated Electrons · Physics 2015-06-25 A. K. Hassan , L. A. Pardi , G. B. Martins , G. Cao , L-C. Brunel

X-ray free electron lasers (XFEL) create femtosecond X-ray pulses with high brightness and high longitudinal coherence allowing to extend X-ray spectroscopy and scattering techniques into the ultrafast time-domain. These X-rays are a…

The recently developed technique of Cyclotron Radiation Emission Spectroscopy (CRES) uses frequency information from the cyclotron motion of an electron in a magnetic bottle to infer its kinetic energy. Here we derive the expected radio…

Laser-based preparation, manipulation, and readout of the states of quantum particles has become a powerful research tool that has enabled the most precise measurements of time, fundamental constants, and electromagnetic fields. Laser…

Quantum Physics · Physics 2018-12-12 O. Schwartz , J. J. Axelrod , S. L. Campbell , C. Turnbaugh , R. M. Glaeser , H. Müller

The tunability and spatial precision of paramagnetic molecules makes them attractive for quantum sensing. However, usual microwave-based detection methods have poor temporal and spatial resolution, and optical methods compatible with…

Quantum Physics · Physics 2024-07-30 Erica Sutcliffe , Nathanael P. Kazmierczak , Ryan G. Hadt

Probing optical excitations with high resolution is important for understanding their dynamics and controlling their interaction with other photonic elements. This can be done using state-of-the-art electron microscopes, which provide the…

Materials Science · Physics 2021-10-13 Renwen Yu , Andrea Konečná , F. Javier García de Abajo

Einstein-Podolsky-Rosen (EPR) entanglement is a criterion that is more demanding than just certifying entanglement. We theoretically and experimentally analyze the low resource generation of bi-partite continuous variable entanglement, as…

Electron-beam microscopy and spectroscopy featuring atomic-scale spatial resolution have become essential tools used daily in almost all branches of nanoscale science and technology. As a natural supercontinuum source of light, free…

We propose a setup enabling electron energy loss spectroscopy to determine the density of the electrons accumulated by an electro-positive dielectric in contact with a plasma. It is based on a two-layer structure inserted into a recess of…

Applied Physics · Physics 2020-01-08 E. Thiessen , F. X. Bronold , H. Fehske

This letter reports cavity dumping of an electrostatic-accelerator-driven free-electron laser (FEL) while it is injection-locked to a frequency-stabilized 240 GHz solid-state source. Cavity dumping enhances the FEL output power by a factor…

Other Condensed Matter · Physics 2015-05-14 Susumu Takahashi , Gerald Ramian , Mark S. Sherwin

A device and a method for producing ultrashort electron pulses with GHz repetition rates via pulsing an input direct current (dc) electron beam are provided. The device and the method are based on an electromagnetic-mechanical pulser (EMMP)…

Instrumentation and Detectors · Physics 2015-08-18 Jiaqi Qiu , Gwanghui Ha , Chunguang Jing , Sergey V. Baryshev , Bryan W. Reed , Yimei Zhu , June W. Lau

The coherent spin dynamics of electrons and holes are studied in a FA0.9Cs0.1PbI2.8Br0.2 perovskite bulk crystal, using time-resolved Kerr ellipticity in a two-color pump-probe scheme. The probe photon energy is tuned to the exciton…

Spin noise spectroscopy is a method of magnetic resonance widely used, nowadays, in atomic and semiconductor research. Classical objects of the EPR spectroscopy - dielectrics with paramagnetic impurities - seemed to be unsuitable for this…

Mesoscale and Nanoscale Physics · Physics 2020-07-01 A. N. Kamenskii , A. Greilich , I. I. Ryzhov , G. G. Kozlov , M. Bayer , V. S. Zapasskii

We consider a possibilty to use an echelon of mutually coherent laser pulses generated by the emerging CAN (Coherent Amplification Network) technology for direct particle acceleration in periodic plasma structures. The plasma structure…

Plasma Physics · Physics 2015-06-16 A. Pukhov , I. Kostyukov , T. Tückmantel , Ph. Luu-Thanh

The magnetic interactions between the spin of an unpaired electron and the surrounding nuclear spins can be exploited to gain structural information, to reduce nuclear relaxation times as well as to create nuclear hyperpolarization via…

Gallium oxide (b-Ga2O3) is a wide-bandgap compound semiconductor with a bandgap of ~ 4.9 eV that is currently considered promising for a wide range of applications ranging from transparent conducting electrodes to UV optoelectronic devices…

Materials Science · Physics 2020-01-08 Jan E. Stehr , Detlev M. Hofmann , Weimin M. Chen , Irina A. Buyanova

Strong optical pulses at mid-infrared and terahertz frequencies have recently emerged as a powerful tool to manipulate and control the solid state and especially complex condensed matter systems with strongly correlated electrons. The…

Strongly Correlated Electrons · Physics 2016-08-22 Daniele Nicoletti , Andrea Cavalleri

We theoretically demonstrate the ability of electron beams to probe the nonlinear photonic response with nanometer spatial resolution, well beyond the capabilities of existing optical techniques. Although the interaction of electron beams…

Mesoscale and Nanoscale Physics · Physics 2020-12-30 Andrea Konečná , Valerio Di Giulio , Vahagn Mkhitaryan , Claus Ropers , F. Javier García de Abajo

The actual theoretical research investigates the resonant high-energy spontaneous bremsstrahlung of ultrarelativistic electrons with considerable energies in the field of a nucleus and a quasimonochromatic laser wave. Under the resonant…

Quantum Physics · Physics 2021-04-07 Sergei P. Roshchupkin , Alexander Dubov , Victor V. Dubov
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