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We discuss the implications of a small indium content (3%) in a GaAs epilayer on the electron- and nuclear-spin relaxation due to enhanced quadrupolar effects induced by the strain. Using the weakly perturbative spin-noise spectroscopy, we…

介观与纳米尺度物理 · 物理学 2022-07-27 C. Rittmann , M. Yu. Petrov , A. N. Kamenskii , K. V. Kavokin , A. Yu. Kuntsevich , Yu. P. Efimov , S. A. Eliseev , M. Bayer , A. Greilich

We report the first observation of Rabi oscillations in the spin-7/2 ensemble of trivalent gadolinium ions hosted in CaWO$_4$ single crystal. A number of transitions within the lowest electronic multiplet $^8S_{7/2}$ of Gd$^{3+}$ ion are…

介观与纳米尺度物理 · 物理学 2017-02-27 E. I. Baibekov , M. R. Gafurov , D. G. Zverev , I. N. Kurkin , A. A. Rodionov , B. Z. Malkin , B. Barbara

A fully ab initio scheme based on quantum chemical wavefunction methods is used to investigate the correlated multiorbital electronic structure of a 3d-metal compound, LaCoO3. The strong short-range electron correlations, involving both Co…

强关联电子 · 物理学 2009-11-13 L. Hozoi , U. Birkenheuer , H. Stoll , P. Fulde

The local environment of Eu$^{2+}$ ($4f^{7}$, $S=7/2$) in Ca$_{1-x}$Eu$_{x}$B$_{6}$ ($0.003\leqslant x\leqslant 1.00$) is investigated by means of electron spin resonance (ESR). For $x\lesssim 0.003$ the spectra show resolved \textit{fine}…

An ensemble of N identical noninteracting spins being in thermal equilibrium and coupled to the resonant mode of a lossless microwave cavity is studied at arbitrary temperature T. Near T = 0 the system is known to be in a coupled…

介观与纳米尺度物理 · 物理学 2014-06-24 E. I. Baibekov

We develop a microscopic theory of spin noise in solid-state systems at electron paramagnetic resonance, when the spin dynamics is driven by static and radio-frequency (RF) magnetic fields and the stochastic effective magnetic field…

介观与纳米尺度物理 · 物理学 2020-02-12 A. V. Poshakinskiy , S. A. Tarasenko

We report on magnetization and electron spin resonance (ESR) measurements of Sr$_{2}$VO$_4$ with orthorhombic symmetry. In this dimer system the $V^{4+}$ ions are in tetrahedral environment and are coupled by an antiferromagnetic…

We report Electron Spin Resonance of the itinerant ferromagnets LaCrGe3, CeCrGe3, and PrCrGe3. These compounds show well defined and very similar spectra of itinerant Cr 3d spins in the paramagnetic temperature region. Upon cooling and…

强关联电子 · 物理学 2021-09-21 Jörg Sichelschmidt , Thomas Gruner , Debarchan Das , Zakir Hossain

A theory of low temperature (T) electron spin resonance (ESR) in half-integer spin antiferromagnetic chains is developed using field theory methods and avoiding previous approximations. It is compared to experiments on Cu benzoate. Power…

强关联电子 · 物理学 2009-10-31 Masaki Oshikawa , Ian Affleck

In dynamic nuclear polarization (DNP) experiments, the compound is driven out-of-equilibrium by microwave (MW) irradiation of the radical electron spins. Their stationary state has been recently probed via electron double resonance (ELDOR)…

强关联电子 · 物理学 2017-02-28 Filippo Caracciolo , Marta Filibian , Pietro Carretta , Alberto Rosso , Andrea De Luca

We report on the use of the polarized $^3$He gas filter and neutron resonant enhancement techniques for the measurement of spin-polarized diffuse neutron scattering due to ferromagnetic domains. A CoO/Co exchange biased bilayer was grown on…

材料科学 · 物理学 2007-05-23 F. Radu , A. Vorobiev , J. Major , H. Humblot , K. Westerholt , H. Zabel

Noise spectroscopy elucidates the fundamental noise sources in spin systems, thereby serving as an essential tool toward developing spin qubits with long coherence times for quantum information processing, communication, and sensing. But…

High quality epitaxial thin films of LaBiMn4/3Co2/3O6 perovskite were fabricated on (001)-oriented SrTiO3 and LaAlO3 substrates by the pulsed laser deposition technique. Magnetization measurements reveal a strong magnetic anisotropy and a…

Brillouin Light Scattering is a powerful technique to measure the microwave excitations present in a magnetic system. In microfocused mode, the light is focused on the sample using a microscope objective. This accelerates substantially the…

介观与纳米尺度物理 · 物理学 2025-06-30 Nessrine Benaziz , Thibaut Devolder , Jean-Paul Adam

Many beyond the standard model theories introduce light paraphotons, a hypothetical spin-1 field that kinetically mixes with photons. Microwave cavity experiments have traditionally searched for paraphotons via transmission of power from an…

高能物理 - 唯象学 · 物理学 2013-06-12 Stephen R. Parker , Gray Rybka , Michael E. Tobar

A new type of spectroscopy for high-resolution studies of spin waves that relies on resonant scattering of hard x-rays is introduced. The energy transfer in the scattering process is encoded in the precession of the polarization vector of…

材料科学 · 物理学 2019-03-25 Ralf Röhlsberger

Electron paramagnetic resonance (EPR) spectroscopy is widely employed to characterize paramagnetic complexes. Recently, EPR combined with scanning tunneling microscopy (STM) achieved single-spin sensitivity with sub-angstrom spatial…

介观与纳米尺度物理 · 物理学 2020-10-09 Tom S. Seifert , Stepan Kovarik , Dominik M. Juraschek , Nicola A. Spaldin , Pietro Gambardella , Sebastian Stepanow

Novel imaging spin-filter techniques, which are based on low energy electron diffraction, are currently of high scientific interest. To improve the spin-detection efficiency a variety of new materials have been introduced in recent years. A…

计算物理 · 物理学 2015-11-18 Stephan Borek , Jürgen Braun , Hubert Ebert , Ján Minár

Very recently we revealed a large family of triangular lattice quantum spin liquid candidates named rare-earth chalcogenides, which features a high-symmetry structure without structural/charge disorders and spin impurities, and may serve as…

Investigating solids with light gives direct access to charge dynamics, electronic and magnetic excitations. For heavy fermions, one has to adjust the frequency of the probing light to the small characteristic energy scales, leading to…