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When aiming for atomic resolution electron magnetic circular dichroism (EMCD) in STEM mode, the high convergence angle of the electron probe can lead to unforeseen artefacts and strong reductions of the signal to noise ratio (SNR) in the…

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

Broadband ferromagnetic resonance is a useful technique to determine the magnetic anisotropy and study the magnetization dynamics of magnetic thin films. We report a spring-loaded sample loading manipulator for reliable sample mounting and…

Applied Physics · Physics 2019-07-09 Shikun He , Qing Qin , Tiejun Zhou , Christos Panagopoulos

We developed an optically detected magnetic resonance (ODMR) setup designed for compatibility with a widely used, commercially available helium bath cryostat equipped with a variable temperature insert. The optical path extends nearly two…

Nitrogen vacancy (NV) centers in diamond have emerged as a leading quantum sensor platform, combining exceptional sensitivity with nanoscale spatial resolution by optically detected magnetic resonance (ODMR). Because fluorescence-based ODMR…

Quantum Physics · Physics 2020-11-24 Laura Kim , Hyeongrak Choi , Matthew Trusheim , Dirk Englund

We present the depth-resolved nuclear resonance reflectivity (NRR) studies of the magnetization evolution in [57Fe(3 nm)/Cr(1.2 nm)]*10 multilayer under the applied external field. The measurements have been performed at the station BL09XU…

Mesoscale and Nanoscale Physics · Physics 2018-03-28 M. Andreeva , A. Gupta , G. Sharma , S. Kamali , K. Okada , Y. Yoda

The application of magnetic resonance (MR) spectroscopy at progressively smaller length scales may eventually permit "chemical imaging" of spins at the surfaces of materials and biological complexes. In particular, the negatively charged…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 Hai-Jing Wang , Chang S. Shin , Scott J. Seltzer , Claudia E. Avalos , Alexander Pines , Vikram S. Bajaj

The existence of orbital-dependent electronic correlations has been recognized as an essential ingredient to describe the physics of iron-based superconductors. NaFeAs, a parent compound of iron based superconductors, exhibits a…

Superconductivity · Physics 2020-09-03 David W. Tam , Zhiping Yin , Yaofeng Xie , Weiyi Wang , M. B. Stone , D. T. Adroja , H. C. Walker , Ming Yi , Pengcheng Dai

A room temperature nuclear magnetic resonance force microscope (MRFM), fitted in a $^1$Tesla electromagnet, is used to measure the nuclear spin relaxation of $^1$H in a micron-size (70ng) crystal of ammonium sulfate. NMR sequences,…

Condensed Matter · Physics 2009-10-31 O. Klein , V. V. Naletov , H. Alloul

We used optically detected magnetic resonance (ODMR) technique to directly probe electron-spin resonance transitions in the excited state of negatively-charged boron vacancy (VB-) defects in hexagonal boron nitride (hBN) at room…

This work reviews and examines two particular issues related with the new technique of electrical detection of ferromagnetic resonance (FMR). This powerful technique has been broadly applied for studying magnetization and spin dynamics over…

Materials Science · Physics 2015-03-19 M. Harder , Z. X. Cao , Y. S. Gui , X. L. Fan , C. -M. Hu

Using circularly polarised radiation and a combination of bulk-sensitive hard X-ray photoelectron spectroscopy and X-ray-absorption spectroscopy (XAS) we studied the electronic and magnetic structure of epitaxial Mn$_{1.8}$Co$_{1.2}$Ga thin…

Co$_3$O$_4$, ZnFe$_2$O$_4$, CoFe$_2$O$_4$, ZnCo$_2$O$_4$, and Fe$_3$O$_4$ thin films were fabricated by pulsed laser deposition at high and low temperatures resulting in crystalline single-phase normal, inverse, as well as disordered spinel…

Ferromagnetic resonance (FMR) was used to investigate the static and dynamic magnetic properties of carbon-doped Mn5Ge3 (C$_{0.1}$ and C$_{0.2}$) thin films grown on Ge(111). The temperature dependence of magnetic anisotropy shows an…

Materials Science · Physics 2016-03-02 C-E Dutoit , V. O. Dolocan , M. D. Kuz'min , L. Michez , M. Petit , V. Le Thanh , B. Pigeau , S. Bertaina

Using density functional theory, we investigate the electronic and magnetic properties of $3d$ transition-metal adatoms adsorbed on a monolayer of Mn on W(110). Mn/W(110) has a noncollinear cycloidal spin-spiral ground state with an angle…

Materials Science · Physics 2020-04-15 Mara Gutzeit , Soumyajyoti Haldar , Stefan Heinze

Straintronics involves the manipulation and regulation of the electronic characteristics of 2D materials through the use of macro- and nano-scale strain engineering. In this study, we utilized an atomic force microscope (AFM) coupled with…

We study spectroscopy of negatively charged nitrogen-vacancy center in diamond at high temperatures under high vacuum conditions. Spin resonances are studied using optical detection of magnetic resonance (ODMR), and optical spectroscopy is…

Quantum Physics · Physics 2023-03-15 Mohammed Attrash , Oleg Shtempluck , Eyal Buks

We present a combined ultrafast optical pump-probe and ultrafast x-ray diffraction measurement of the CDW dynamics in SmTe$_3$ at 300 K. The ultrafast x-ray diffraction measurements, taken at the Linac Coherent Light Source reveal a $\sim…

Identifying and imaging spin textures of ever more complex magnetic structures has become a major challenge in the past decade, especially at ultrashort timescales. Most of current approaches are based on the analysis of their polarization…

Optics · Physics 2020-05-26 Thierry Ruchon , Mauro Fanciulli

The effects of strain on a film of mulitferroic GdMnO3 are investigated using both magnetometry and magneto-optic spectroscopy. Optical spectra, in the energy range 1.5eV - 3.5eV, were taken in Faraday geometry in an applied magnetic field…

Strongly Correlated Electrons · Physics 2010-11-19 Mohammed S. Al Qahtani , Marzook Alshammari , H. J Blythe , A. M. Fox , G. A. Gehring , N. Andreev , V. Chichkov , Ya Mukovskii