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The 55Mn nuclear magnetic resonance spectrum of noncollinear 12-sublattice antiferromagnet Mn3Al2Ge3O12 has been studied in the frequency range of 200 - 640 MHz in the external magnetic field H || [001]} at T=1.2 K. Three absorption lines…

Materials Science · Physics 2017-10-30 Aleksey M. Tikhonov , Nikolai G. Pavlov , Oleg G. Udalov

Electron spin echo envelope modulation (ESEEM) has been observed for the first time from a coupled hetero-spin pair of electron and nucleus in liquid solution. Previously, modulation effects in spin echo experiments have only been described…

We report Electron Paramagnetic Resonance measurements on single crystalline and powder samples of Nd_0.5Ca_0.5MnO_3 across the charge-ordering transition at T_co=240 K down to the antiferromagnetic ordering transition at T_N = 140 K. The…

Strongly Correlated Electrons · Physics 2021-05-26 Janhavi P. Joshi , Rajeev Gupta , A. K. Sood , S. V. Bhat , A. R. Raju , C. N. R. Rao

The impurity paramagnetic ion, $Cu^{2+}$ substitutes $Al$ in the $SrLaAlO_4$ single crystal lattice, this results in a $CuO_6$ elongated octahedron, the resulting measured g-factors shows four-fold axes variation condition. The aggregate…

Quantum Physics · Physics 2024-03-26 M. A. Hosain , J. -M. Le Floch , J. Krupka , M. E. Tobar

The local magnetic field in a Penning-Malmberg trap is found by measuring the temperatures that result when electron plasmas are illuminated by microwaves pulses. Multiple heating resonances are observed as the pulse frequencies are swept.…

Plasma Physics · Physics 2020-03-18 E. D. Hunter , A. Christensen , J. Fajans , T. Friesen , E. Kur , J. S. Wurtele

We compare the magnetic and electronic configuration of single Mn atoms in molecular beam epitaxy (MBE) grown Bi$_2$Se$_3$ thin films, focusing on electron paramagnetic (ferromagnetic) resonance (EPR and FMR, respectively) and…

We report the development of a continuous-wave and pulsed X-band electron spin resonance (ESR) spectrometer for the study of spins on ordered surfaces down to cryogenic temperatures. The spectrometer operates in ultra-high vacuum and…

The magnetic excitation spectrum of the unconventional ferromagnet CeRh$_{3}$B$_{2}$ was measured by inelastic neutron scattering on single crystal sample in the magnetically ordered and paramagnetic phases. The spin-wave excitation…

Strongly Correlated Electrons · Physics 2012-02-29 S. Raymond , J. Panarin , F. Givord , A. P. Murani , J. X. Boucherle , P. Lejay

The electron spin g- and hyperfine tensors of the endohedral metallofullerene Sc@C82 are anisotropic. Using electron spin resonance (ESR) and density functional theory (DFT), we can relate their principal axes to the coordinate frame of the…

The spin dynamics of the ferromagnetic Kondo lattice CeRuPO is investigated by Electron Spin Resonance (ESR) at microwave frequencies of 1, 9.4, and 34~GHz. The measured resonance can be ascribed to a rarely observed bulk Ce3+ resonance in…

Strongly Correlated Electrons · Physics 2010-10-13 T. Förster , J. Sichelschmidt , C. Krellner , C. Geibel , F. Steglich

We describe a fully broadband approach for electron spin resonance (ESR) experiments where it is possible to not only tune the magnetic field but also the frequency continuously over wide ranges. Here a metallic coplanar transmission line…

We use inelastic neutron scattering to show that superconductivity in electron-underdoped NaFe0.985Co0.015As induces a dispersive sharp resonance near Er1 = 3:25 meV and a broad dis- persionless mode at Er2 = 6 meV. However, similar…

Throughout a complete Electron Spin Resonance (ESR) and magnetization study of La0.5Ca0.5MnO3, we discuss about the nature of the complex phase-segregated state established in this compound below T~210 K. Between TN<T<TC, the ESR spectra…

Materials Science · Physics 2009-11-07 F. Rivadulla , M. Freita-Alvite , M. A. Lopez-Quintela , L. E. Hueso , D. R. Miguens , P. Sande , J. Rivas

The studies of chemical processes in spatially confined conditions are of interest from the fundamental and industrial points of view. By means of the W band EPR and 1H Mims electron nuclear double resonance (ENDOR) we show that the…

Mesoscale and Nanoscale Physics · Physics 2018-12-13 Andrei Galukhin , Yuri Osin , Alexander Rodionov , Georgy Mamin , Marat Gafurov , Sergei Orlinskii

We employ electron paramagnetic resonance (EPR) of the spin probe Mn2+ to study the paraelectric ferroelectric transition in DMAMnF and Mn2 doped DMZnF, which are considered to be model metal organic frameworks (MOF) with a Pb free…

Materials Science · Physics 2022-02-25 Nandita Abhyankar , Sylvain Bertaina , Maylis Orio , Naresh Dalal

In this letter, we report that the special coupling between Dirac fermion and lattice vibrations, in other words, electron-phonon coupling (EPC), in silicene layers on Ag(111) surface was probed by an in-situ Raman spectroscopy. We find the…

Materials Science · Physics 2015-05-20 Jincheng Zhuang , Xun Xu , Yi Du , Kehui Wu , Lan Chen , Weichang Hao , Jiaou Wang , Wai Kong Yeoh , Xiaolin Wang , Shi Xue Dou

In the low doping range of $x$ from 0.01 to 0.06 in La$_{2-x}$Sr$_{x}$CuO$_{4}$, a narrow electron paramagnetic resonance (EPR) line has been investigated. This line is distinct from the known broad line, both due to probing Mn$^{2+}$ ions.…

Superconductivity · Physics 2009-11-10 A. Shengelaya , M. Bruun , B. I. Kochelaev , A. Safina , K. Conder , K. A. Muller

We report ac susceptibility and high-frequency electron spin resonance (ESR) measurements on the geometrically frustrated compound Ba$_3$NbFe$_3$Si$_2$O$_{14}$ with the N\'{e}el temperature $T_N=27 K$. An unusually large…

Strongly Correlated Electrons · Physics 2011-08-10 K. -Y. Choi , Z. -X. Wang , A. Ozarowski , J. van Tol , H. D. Zhou , C. R. Wiebe , N. S. Dalal

Resonant magnetoabsorption spectra for CuGeO3 single crystals containing 2% of Co impurity are studied in the frequency range 60-360 GHz in magnetic field up to 16 T at temperatures 2-60 K. It is found that together with the resonance on…

Strongly Correlated Electrons · Physics 2007-05-23 S. V. Demishev , A. V. Semeno , N. E. Sluchanko , N. A. Samarin , A. A. Pronin , Y. Inagaki , S. Okubo , H. Ohta , Y. Oshima , L. I. Leonyuk

Photodisintegration and radiative capture in the N2H, N3H, N3He, 2H2H, 2H3He, 2H4He, 3He3H, 4He3H, and 4He3He channels are studied on the basis of the corresponding two-cluster potential models. The astrophysical S factors at low energies…

Nuclear Theory · Physics 2015-06-26 S. B. Dubovichenko , A. V. Dzhazairov-Kakhramanov
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