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Modifications of spin-splitting dispersion relations and density of states for electrons in non-symmetric heterostructures under in-plane magnetic field are studied within the envelope function formalism. Spin-orbit interactions, caused by…

材料科学 · 物理学 2009-11-11 A. Hernandez-Cabrera , P. Aceituno , F. T. Vasko

Combining electron paramagnetic resonance (EPR) with scanning tunneling microscopy (STM) enables detailed insight into the interactions and magnetic properties of single atoms on surfaces. A requirement for EPR-STM is the efficient coupling…

介观与纳米尺度物理 · 物理学 2020-01-15 T. S. Seifert , S. Kovarik , C. Nistor , L. Persichetti , S. Stepanow , P. Gambardella

We present pulsed electrically detected magnetic resonance (EDMR) measurements at low magnetic fields using posphorus-doped silicon with natural isotope composition as a model system. Our measurements show that pulsed EDMR experiments, well…

材料科学 · 物理学 2015-06-23 L. Dreher , F. Hoehne , H. Morishita , H. Huebl , M. Stutzmann , K. M. Itoh , M. S. Brandt

Dilute frozen solutions of the single molecule magnet Ni$_4$ (S=4) have been studied using high frequency D-band (130 GHz) EPR. Despite the random orientation of the molecules, well defined EPR absorption peaks are observed, due to the…

其他凝聚态物理 · 物理学 2009-11-13 G. de Loubens , A. D. Kent , V. Krymov , G. J . Gerfen , C. C. Beedle , D. N. Hendrickson

The field of research on magnetic van der Waals compounds -- a special subclass of quasi-two-dimensional materials -- is currently rapidly expanding due to the relevance of these compounds to fundamental research where they serve as a…

强关联电子 · 物理学 2024-07-25 Vladislav Kataev , Bernd Büchner , Alexey Alfonsov

The impurity-induced antiferromagnetic ordering of the doped Haldane magnet Pb(Ni{1-x}Mg{x})2V2O8 (0 < x <0.06) was studied by electron spin resonance (ESR) on ceramic samples in the frequency range 9-110 GHz. Below the N\'{e}el temperature…

强关联电子 · 物理学 2009-11-07 A. I. Smirnov , V. N. Glazkov , H. -A. Krug von Nidda , A. Loidl , L. N. Demianets , A. Ya. Shapiro

ESR-study of the Ni-doped spin-Peierls compound CuGeO3 has been performed in the frequency range 9-75 GHz. At low temperatures the g-factor is smaller than the value expected for Cu- and Ni-ions. This anomaly is explained by the formation…

强关联电子 · 物理学 2012-02-02 V. N. Glazkov , A. I. Smirnov , O. A. Petrenko , D. Mck. Paul , A. G. Vetkin , R. M. Eremina

Extending the current understanding and use of magnonics beyond conventional planar systems, we demonstrate surface localization of spin-wave ferromagnetic resonance (FMR) modes by designing complex three-dimensional nanostructures. Using…

介观与纳米尺度物理 · 物理学 2024-11-07 Mateusz Gołębiewski , Krzysztof Szulc , Maciej Krawczyk

A systematic electron spin resonance (ESR) investigation of the low temperature regime for the (ET)2SF5CF2SO3 system was performed in the frequency range of ~200-700 GHz, using backward wave oscillator sources, and at fields up to 25 T.…

We herein estimate the effect of lattice defects on the line shape of electron paramagnetic resonance (EPR) signals from a single crystal of the S=10 single-molecule magnet Mn$_{12}$ with the external magnetic field along the crystal c…

凝聚态物理 · 物理学 2009-11-07 Kyungwha Park , N. S. Dalal , P. A. Rikvold

A detailed multifrequency high field - high frequency EPR (95-285 GHz) study has been performed on the single-molecule magnet of formula [Fe8O2(OH)12(tacn)6]Br8 9H2O, where tacn=1,4,7-triazacyclononane. Polycrystalline powder spectra have…

介观与纳米尺度物理 · 物理学 2016-08-31 Anne Laure Barra , Dante Gatteschi , Roberta Sessoli

A quantum-mechanical model to calculate the electron energy-loss spectra (EELS) for the system of a closely located metallic nanoshell and a molecule has been developed. At the resonance between the molecular excitation and plasmon modes in…

原子物理 · 物理学 2014-10-07 I. Yu. Goliney , Ye. V. Onykienko

We calculate the electron paramagnetic resonance (EPR) spectra of the antiferromagnetic spin-1 chain compound Y(2)BaNi(1-x)Mg(x)O(5) for different values of x and temperature T much lower than the Haldane gap (~100K). The low-energy…

凝聚态物理 · 物理学 2009-10-31 C. D. Batista , K. Hallberg , A. A. Aligia

W-band ({\nu} ca. 94 GHz) electron paramagnetic resonance (EPR) spectroscopy was used for a single-crystal study of a star-shaped Fe3Cr single-molecule magnet (SMM) with crystallographically imposed trigonal symmetry. The high resolution…

介观与纳米尺度物理 · 物理学 2013-09-13 L. Sorace , M. -E. Boulon , P. Totaro , A. Cornia , J. Fernandes-Soares , R. Sessoli

Electron paramagnetic resonance (EPR) is a valuable tool for physics, chemistry, biology and medicine, providing complementary spectroscopic information to NMR. It has long been known that EPR at high magnetic fields offers greater spectral…

Performing nanoscale scanning electron paramagnetic resonance (EPR) requires three essential ingredients. First, a static magnetic field together to field gradients to Zeeman split the electronic energy levels with spatial resolution.…

介观与纳米尺度物理 · 物理学 2024-01-16 Carlos A. González-Gutiérrez , David García-Pons , David Zueco , María José Martínez-Pérez

We show that in cubic crystals with anisotropic impurity centers the sum of squares of the magnetic resonance (EPR) frequencies is invariant with respect to the magnetic field direction. The connection between such an invariant and the…

介观与纳米尺度物理 · 物理学 2022-01-26 A. N. Kamenskii , V. O. Kozlov , N. S. Kuznetsov , I. I. Ryzhov , G. G. Kozlov , M. Bayer , A. Greilich , V. S. Zapasskii

Films of metal-insulator nanogranular composites M$_x$D$_{100-x}$ with different composition and percentage of metal and dielectric phases (M = Fe, Co, CoFeB; D = Al$_2$O$_3$, SiO$_2$, LiNbO$_3$; x $\approx$ 15-70 at.%) are investigated by…

Reading and manipulating the spin status of single magnetic molecules is of paramount importance both for applicative and fundamental purposes. The possibility to combine Electron Spin Resonance (ESR) and Scanning Tunnelling Microscopy…

We present electron spin resonance (ESR) investigation of the acentric \FeLang, featuring a unique single-domain double-chiral magnetic ground state. Combining simulations of the ESR line-width anisotropy and the antiferromagnetic-resonance…

强关联电子 · 物理学 2011-12-21 A. Zorko , M. Pregelj , A. Potočnik , J. van Tol , A. Ozarowski , V. Simonet , P. Lejay , S. Petit , R. Ballou