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Rare-earth spin ensembles are a promising platform for microwave quantum memory applications due to their hyperfine transitions, which can exhibit exceptionally long coherence times when using an operation point with zero first-order Zeeman…

We present a rotary-stage microwave probe station suitable for magnetic films and spintronic devices. Two stages, one for field rotation from parallel to perpendicular to the sample plane (Out-of-Plane) and the other intended for field…

Materials Science · Physics 2016-07-18 Shikun He , Zhaoliang Meng , Lisen Huang , Lee Koon Yap , Tiejun Zhou , Christos Panagopoulos

Atomic force microscopy (AFM) has been constantly supporting nanosciences and nanotechnologies for over 30 years, being present in many fields from condensed matter physics to biology. It enables measuring very weak forces at the nanoscale,…

Instrumentation and Detectors · Physics 2021-09-07 L Schwab , P Allain , N Mauran , X Dollat , L Mazenq , D Lagrange , M Gély , S Hentz , G Jourdan , I Favero , B Legrand

We demonstrate the application of Atomic Force Microscopy (AFM) based optical force microscopy to map the optical near-fields with nanometer resolution, limited only by the AFM probe geometry. We map the electric field distributions of…

Spin-torque driven ferromagnetic resonance (ST-FMR) is used to study magnetic excitations in Co/Ni synthetic layers confined in nanojunctions. Field swept ST-FMR measurements were conducted with a magnetic field applied perpendicular to the…

Mesoscale and Nanoscale Physics · Physics 2008-02-14 W. Chen , G. de Loubens , J-M. L. Beaujour , A. D. Kent , J. Z. Sun

Ferromagnetic/Antiferromagnetic (FM/AFM) bilayers dynamics have been a recent topic of interest due to the interaction occurring at the interface, where the magnetic moments of the AFM can be imprinted into the FM, and the exchange bias…

We report the development of the frequency-modulation (FM) method for measuring electron spin resonance (ESR) absorption in the 210-420 GHz frequency range. We demonstrate that using a high-frequency ESR spectrometer without resonating…

Strongly Correlated Electrons · Physics 2010-07-14 Balint Nafradi , Richard Gaal , Titusz Feher , Laszlo Forro

In this paper we present a detailed analysis of the Faraday depth (FD) spectrum and its clean components obtained through the application of the commonly used technique of Faraday rotation measure synthesis to analyze spectro-polarimetric…

Astrophysics of Galaxies · Physics 2019-11-21 Aritra Basu , Andrew Fletcher , S. A. Mao , Blakesley Burkhart , Rainer Beck , Dominic Schnitzeler

We analyse observational signatures of magnetic fields for simulations of a Milky-Way like disc with supernova-driven interstellar turbulence and self-consistent chemical processes. In particular, we post-process two simulations data sets…

Astrophysics of Galaxies · Physics 2022-03-29 Yoan Rappaz , Jennifer Schober , Philipp Girichidis

Strong coupling between electrical and mechanical phenomena and the presence of switchable polarization have enabled applications of ferroelectric materials for nonvolatile memories (FeRAM), data storage, and ferroelectric lithography.…

Electron spin resonance (ESR) spectroscopy is the method of choice for characterizing paramagnetic impurities, with applications ranging from chemistry to quantum computing, but it gives access only to ensemble-averaged quantities due to…

We report the local measurements of the magnetic penetration depth $\lambda$ in a superconducting Nb film using magnetic force microscopy (MFM). We developed a method for quantitative extraction of the penetration depth from…

Materials Science · Physics 2009-12-29 E. Nazaretski , J. P. Thibodaux , I. Vekhter , L. Civale , J. D. Thompson , R. Movshovich

Broadband FMR responses for metallic single-layer and bi-layer magnetic films with total thicknesses smaller than the microwave magnetic skin depth have been studied. Two different types of microwave transducers were used to excite and…

Materials Science · Physics 2015-05-14 K. J. Kennewell , M. Kostylev , R. Magaraggia , R. L. Stamps , M. Ali , A. A. Stashkevich , D. Greig , B. J. Hickey

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

X-ray detected ferromagnetic resonance (XFMR) spectroscopy is an experimental technique for element-specific spin dynamics in the GHz regime and has been utilized to study spintronic materials. The XFMR signal is usually obtained by…

Nuclear magnetic resonance (NMR) technique benefits from high magnetic field not only due to the field-enhanced measurement sensitivity and resolution, but also because it is a powerful tool to investigate field-induced physics in modern…

Instrumentation and Detectors · Physics 2023-05-05 Wenqi Wei , Qinying Liu , Le Yuan , Jian Zhang , Shiyu Liu , Rui Zhou , Yongkang Luo , Xiaotao Han

Frequency dependent dynamic behavior in Piezoresponse Force Microscopy (PFM) implemented on a beam-deflection atomic force microscope (AFM) is analyzed using a combination of modeling and experimental measurements. The PFM signal comprises…

Materials Science · Physics 2015-06-25 Stephen Jesse , Arthur P. Baddorf , Sergei V. Kalinin

We investigate the dc electric response induced by ferromagnetic resonance in ferromagnetic Permalloy (Ni80Fe20) microstrips. The resulting magnetization precession alters the angle of the magnetization with respect to both dc and rf…

Strongly Correlated Electrons · Physics 2008-04-10 N. Mecking , Y. S. Gui , C. -M. Hu

We studied magnetic field dependent microwave absorption in epitaxial La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ films using an X-band Bruker ESR spectrometer. By analyzing angular and temperature dependence of the ferromagnetic and spin-wave resonances…

Strongly Correlated Electrons · Physics 2009-11-13 M. Golosovsky , P. Monod , P. K. Muduli , R. C. Budhani

We investigate how controlling induced eddy currents in thin film ferromagnet-normal metal (FM/NM) structures can be used to tailor the local microwave (MW) fields in ferromagnetic resonance (FMR) experiments. The MW fields produced by eddy…

Mesoscale and Nanoscale Physics · Physics 2016-05-25 Vegard Flovik , Bjørn Holst Pettersen , Erik Wahlström