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Thickness uniformity is regarded as an important parameter in designing thin film devices. However, some applications based on films with non-uniform thickness have recently emerged, such as gas sensors and optimized materials based on the…

Free-standing thin films of magnetic ion intercalated transition metal dichalcogenides are produced using ultramicrotoming techniques. Films of thicknesses ranging from 30nm to 250nm were achieved and characterized using transmission…

Materials Science · Physics 2020-12-02 Th. Danz , Q. Liu , X. D. Zhu , L. H. Wang , S. W. Cheong , I. Radu , C. Ropers , R. I. Tobey

Images of surface topography of ultrathin magnetic films have been used for Monte Carlo simulations in the framework of the ferromagnetic Ising model to study the hysteresis and thermal properties of nanomaterials. For high performance…

Materials Science · Physics 2015-03-20 V. Yu. Kapitan , K. V. Nefedev

Nitrogen-Vacancy centers in diamond possess an electronic spin resonance that strongly depends on temperature, which makes them efficient temperature sensor with a sensitivity down to a few mK/$\sqrt{\rm Hz}$. However, the high thermal…

We employ an optical fiber doped with randomly oriented fluorescent sub-micron diamonds and the novel zero-field resonance protocol to collect information on the localization and orientation of a magnetic-field source and its distribution.…

Nitrogen vacancy (NV) centers, optically active atomic defects in diamond, have been widely applied to emerging quantum sensing, imaging, and network efforts, showing unprecedented field sensitivity and nanoscale spatial resolution. Many of…

Mesoscale and Nanoscale Physics · Physics 2021-04-06 Eric Lee-Wong , Jinjun Ding , Xiaoche Wang , Chuanpu Liu , Nathan J. McLaughlin , Hailong Wang , Mingzhong Wu , Chunhui Rita Du

We report on the origin of fragmentation of ultracold atoms observed on a permanent magnetic film atom chip. A novel technique is used to characterize small spatial variations of the magnetic field near the film surface using radio…

Atomic Physics · Physics 2009-07-07 S. Whitlock , B. V. Hall , T. Roach , R. Anderson , P. Hannaford , A. I. Sidorov

The study of atomically thin ferromagnetic crystals has led to the discovery of unusual magnetic behaviour and provided insight into the magnetic properties of bulk materials. However, the experimental techniques that have been used to…

The nitrogen-vacancy (NV) center in diamond is a prime candidate for quantum sensing technologies. Here, we present a fully integrated and mechanically robust fiber-based endoscopic sensor with a tip diameter of $1.25 \mathrm{mm}$. On its…

Magnetodynamical properties of nanomagnets are affected by the demagnetizing fields created by the same nanoelements. In addition, magnetocrystalline anisotropy produces an effective field that also contributes to the spin dynamics. In this…

Mesoscale and Nanoscale Physics · Physics 2015-09-14 Vegard Flovik , Ferran Macià , Joan Manel Hernàndez , Rimantas Brucas , Maj Hanson , Erik Wahlstrôm

Interest in van der Waals materials often stems from a desire to miniaturise existing technologies by exploiting their intrinsic layered structure to create near atomically-thin components that do not suffer from surface defects. One…

Mesoscale and Nanoscale Physics · Physics 2022-08-22 A. J. Healey , S. Rahman , S. C. Scholten , I. O. Robertson , G. J. Abrahams , N. Dontschuk , B. Liu , L. C. L. Hollenberg , Y. Lu , J. -P. Tetienne

High quality, thin diamond membranes containing nitrogen-vacancy centers provide critical advantages in the fabrication of diamond-based structures for a variety of applications, including wide field magnetometry, photonics and bio-sensing.…

Materials Science · Physics 2012-10-02 Jonathan C. Lee , Andrew P. Magyar , David O. Bracher , Igor Aharonovich , Evelyn L. Hu

In this work we discuss the use of interferometric measurement technique to study microwave magnetization dynamics on ferromagnetic nanostructures. We demonstrate that in this way one can resolve features which are impossible to resolve…

Mesoscale and Nanoscale Physics · Physics 2014-02-17 Eugene N. Ivanov , Mikhail Kostylev

The magnetization characteristic in a permalloy thin strip is investigated by electrically measuring the anisotropic magnetoresistance and ferromagnetic resonance in in-plane and out-of-plane configurations. Our results indicate that the…

Materials Science · Physics 2014-03-05 Ziqian Wang , Guolin Yu , Xinzhi Liu , Bo Zhang , Xiaoshuang Chen , Wei Lu

Single nitrogen-vacancy (NV) centers are widely used as nanoscale sensors for magnetic and electric fields, strain and temperature. Nanoscale magnetometry using NV centers allows for example to quantitatively measure local magnetic fields…

We investigate spin and optical properties of individual nitrogen-vacancy centers located within 1-10 nm from the diamond surface. We observe stable defects with a characteristic optically detected magnetic resonance spectrum down to lowest…

Mesoscale and Nanoscale Physics · Physics 2012-08-27 B. K. Ofori-Okai , S. Pezzagna , K. Chang , M. Loretz , R. Schirhagl , Y. Tao , B. A. Moores , K. Groot-Berning , J. Meijer , C. L. Degen

Individual, luminescent point defects in solids so called color centers are atomic-sized quantum systems enabling sensing and imaging with nanoscale spatial resolution. In this overview, we introduce nanoscale sensing based on individual…

Mesoscale and Nanoscale Physics · Physics 2017-05-11 Ettore Bernardi , Richard Nelz , Selda Sonusen , Elke Neu

Fluorescent nanodiamonds containing negatively-charged nitrogen-vacancy (NV$^-$) centers are promising for a wide range of applications, such as for sensing, as fluorescence biomarkers, or to hyperpolarize nuclear spins. NV$^-$ centers are…

We propose a method for nano-scale characterization of long range magnetic order in diluted magnetic systems to clarify the origins of the room temperature ferromagnetism. The GaN:Mn thin films are grown by metal-organic chemical vapor…

Sensitive, real-time optical magnetometry with nitrogen-vacancy centers in diamond relies on accurate imaging of small ($\ll 10^{-2}$) fractional fluorescence changes across the diamond sample. We discuss the limitations on magnetic-field…

Instrumentation and Detectors · Physics 2018-04-13 Adam M. Wojciechowski , Mürsel Karadas , Alexander Huck , Fedor Jelezko , Jan Meijer , Ulrik L. Andersen