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Magnetic nanostructures sustaining different kinds of optical modes have been used for magnetometry and label-free ultrasensitive refractive index probing, where the main challenge is the realization of compact devices able to transfer this…

The pinning of flux lines by two different types of regular arrays of submicron magnetic dots is studied in superconducting Pb films; rectangular Co dots with in-plane magnetization are used as pinning centers to investigate the influence…

A realization of the force-induced remnant magnetization spectroscopy (FIRMS) technique of specific biomolecular binding is presented where detection is accomplished with wide-field optical and diamond-based magnetometry using an ensemble…

Instrumentation and Detectors · Physics 2020-01-08 Sean Lourette , Lykourgos Bougas , Metin Kayci , Shoujun Xu , Dmitry Budker

We demonstrate a method of imaging spatially varying magnetic fields using a thin layer of nitrogen-vacancy (NV) centers at the surface of a diamond chip. Fluorescence emitted by the two-dimensional NV ensemble is detected by a CCD array,…

Mesoscale and Nanoscale Physics · Physics 2012-07-16 L. M. Pham , D. Le Sage , P. L. Stanwix , T. K. Yeung , D. Glenn , A. Trifonov , P. Cappellaro , P. R. Hemmer , M. D. Lukin , H. Park , A. Yacoby , R. L. Walsworth

Scanning electron microscopy with polarization analysis is a powerful lab-based magnetic imaging technique offering parallel imaging of multiple magnetization components and a very high spatial resolution. However, one drawback of the…

Instrumentation and Detectors · Physics 2018-08-22 Daniel Schönke , Andreas Oelsner , Pascal Krautscheid , Robert M. Reeve , Mathias Kläui

A new method for measuring the large-scale structure of the Galactic magnetic field is presented. The Galactic magnetic field has been probed through the Galactic disk with near-infrared starlight polarimetry, however the distance to each…

Astrophysics of Galaxies · Physics 2015-06-22 Michael D. Pavel

{We report on the first of a series of studies on coronal bright points investigating the physical mechanism that generates these phenomena.} {The aim of this paper is to understand the magnetic-field structure that hosts the bright…

Solar and Stellar Astrophysics · Physics 2017-10-11 K. Galsgaard , M. S. Madjarska , F. Moreno-Insertis , Z. Huang , T. Wiegelmann

Spatial imaging of magnetic stray fields from magnetic materials is a useful tool for identifying the underlying magnetic configurations of the material. However, transforming the magnetic image into a magnetization image is an ill-poised…

Mesoscale and Nanoscale Physics · Physics 2024-12-30 David A. Broadway , Mykhailo Flaks , Adrien E. E. Dubois , Patrick Maletinsky

We demonstrate a scalable new ferromagnetic resonance (FMR) technique based on the spin-orbit interaction. An alternating current drives FMR in uniform ferromagnetic structures patterned from the dilute magnetic semiconductors (Ga,Mn)As and…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 D. Fang , H. Kurebayashi , J. Wunderlich , K. Vyborny , L. P. Zarbo , R. P. Campion , A. Casiraghi , B. L. Gallagher , T. Jungwirth , A. J. Ferguson

Magneto-optical Kerr effect (MOKE) is an efficient approach to probe surface magnetization in thin film samples. Here we present a wide-field MOKE technique that adopts a K$\"o$hler illumination scheme to characterize the current-induced…

Materials Science · Physics 2018-06-01 Tsung-Yu Tsai , Tian-Yue Chen , Chun-Ting Wu , Hsin-I Chan , Chi-Feng Pai

Magnetic force microscopy (MFM) allows detection of stray magnetic fields around magnetic materials and the two-dimensional visualization of these fields. This paper presents a theoretical analysis of the oscillations of an MFM tip above a…

Applied Physics · Physics 2018-12-31 Fujio Wakaya , Kenta Oosawa , Masahiro Kajiwara , Satoshi Abo , Mikio Takai

Advanced vector imaging techniques provide us with 3D maps of magnetization fields in which topological concepts can be directly applied to describe real-space experimental textures in non-ideal geometries. Here, the 3D magnetization of a…

Remanent magnetization in geological samples may record the past intensity and direction of planetary magnetic fields. Traditionally, this magnetization is analyzed through measurements of the net magnetic moment of bulk millimeter to…

Time-resolved Kerr microscopy is used to study the excitations of individual micron- scale ferromagnetic thin film elements in their remnant state. Thin (18 nm) square elements with edge dimensions between 1 and 10 $\mu$m form closure…

Materials Science · Physics 2009-11-07 J. P. Park , P. Eames , D. M. Engebretson , J. Berezovsky , P. A. Crowell

We demonstrate a real-space imaging of a heterodyne signal of light that is produced as a result of the Brillouin light scattering by coherently driven magnons in magnetostatic modes. With this imaging technique, we characterize surface…

Mesoscale and Nanoscale Physics · Physics 2020-10-06 Shotaro Z. Baba , Yosuke Nakata , Yoshitaka Ito , Ryusuke Hisatomi , Yasunobu Nakamura , Koji Usami

We demonstrate quantitative measurement of the ferromagnetic resonance (FMR) precession cone angle of a micro-scale sample of vanadium tetracyanoethylene (V[TCNE]$_{x\sim 2}$) using diamond spins. V[TCNE]$_{x\sim 2}$ is a low-damping,…

Materials Science · Physics 2025-06-03 B. A. McCullian , M. Chilcote , H. Yusuf , E. Johnston-Halperin , G. D. Fuchs

The spatial resolution of imaging magnetometers has benefited from scanning probe techniques. The requirement that the sample perturbs the scanning probe through a magnetic field external to its volume limits magnetometry to samples with…

Quantum Physics · Physics 2017-04-05 J. van Bree , M. E. Flatté

We give instructions for the construction and operation of a simple apparatus for performing optically detected magnetic resonance measurements on diamond samples containing high concentrations of nitrogen-vacancy (NV) centers. Each NV…

Mesoscale and Nanoscale Physics · Physics 2018-03-14 Haimei Zhang , Carina Belvin , Wanyi Li , Jennifer Wang , Julia Wainwright , Robbie Berg , Joshua Bridger

Electron microscopy stands out as electron waves providing higher spatial resolving power compared to their optical counterpart. Here we investigate theoretically the interaction of twisted electrons generated in transmission electron…

Mesoscale and Nanoscale Physics · Physics 2021-03-17 Yan Wang , Chenglong Jia , Pengming Zhang

We study the steering of visible light using a combination of magneto-optical effects and the reconfigurability of magnetic domains in Yttrium-Iron Garnet films. The spontaneously formed stripe domains are used as a field-controlled optical…

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