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Non-invasive imaging of microwave (MW) magnetic fields with microscale lateral resolution is pivotal for various applications, such as MW technologies and integrated circuit failure analysis. Diamond nitrogen-vacancy (NV) center…

We have developed a simple detection scheme to study spin waves excited by surface acoustic wave (SAW) in ferromagnetic thin films. Metallic antennas made of Ta and a ferromagnetic element are placed along the SAW propagation path. The SAW…

Mesoscale and Nanoscale Physics · Physics 2024-03-20 Hiroki Matsumoto , Yasuhiro Todaka , Takuya Kawada , Masashi Kawaguchi , Masamitsu Hayashi

A new method for detecting the magnetic resonance of electronic spins at low temperature is demonstrated. It consists in measuring the signal emitted by the spins with a superconducting qubit that acts as a single-microwave-photon detector,…

A magnetically levitated mass couples to gravity and can act as an effective gravitational wave detector. We show that a superconducting sphere levitated in a quadrupolar magnetic field, when excited by a gravitational wave, will produce…

High Energy Physics - Phenomenology · Physics 2025-06-10 Daniel Carney , Gerard Higgins , Giacomo Marocco , Michael Wentzel

We present a method for extracting high-spatial resolution dielectric constant data at microwave frequencies. A scanning near field microwave microscope probes a sample and acquires data in the form of the frequency and quality factor…

Materials Science · Physics 2009-09-22 Shuogang Huang , H. M. Christen , M. E. Reeves

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

Imaging of microwave magnetic fields with nano-scale resolution has interesting applications. Specifically, detecting the orientation of the microwave fields is useful in condensed matter physics and quantum control. However, most of the…

Quantum Physics · Physics 2026-01-13 Akshat Rana , Pooja Lamba , Atanu Ghosh , Siddharth Dhomkar , Rama K. Kamineni

Most wind turbines are remotely monitored 24/7 to allow for an early detection of operation problems and developing damage. We present a new fault detection method for vibration-monitored drivetrains that does not require any feature…

Machine Learning · Computer Science 2022-06-28 Stefan Jonas , Dimitrios Anagnostos , Bernhard Brodbeck , Angela Meyer

We report on the design and performance of a cryogenic (300 mK) near-field scanning microwave microscope. It uses a microwave resonator as the near-field sensor, operating at a frequency of 6 GHz and microwave probing amplitudes down to 100…

Mesoscale and Nanoscale Physics · Physics 2014-04-03 S. E. de Graaf , A. V. Danilov , A. Adamyan , S. E. Kubatkin

In this paper, we calculate the contribution of the late time mode of a massless vector field to the power spectrum of the primordial gravitational wave using retarded Green's propagator. We consider a non-trivial coupling between gravity…

General Relativity and Quantum Cosmology · Physics 2016-11-29 Kaixi Feng

Non-linear magnetization dynamics is essential for the operation of many spintronics devices. For microwave assisted switching of magnetic elements the low field regime is of particular interest. In addition a large number of experiments…

Mesoscale and Nanoscale Physics · Physics 2015-10-28 Hans G. Bauer , Peter Majchrak , Torsten Kachel , Christian H. Back , Georg Woltersdorf

Microwave detected, microwave-optical double resonance was used to record the A state electronic spectrum of NH3, NH2D, and NHD2 with both vibrational and rotational resolution. To investigate ND3 with the same resolution as we had with our…

An ensemble of nitrogen-vacancy (NV) centers in diamond is a fascinating candidate to realize a sensitive magnetic field sensor. In particular, since the axes of the NV centers are distributed along four directions, a collection of…

Quantum Physics · Physics 2019-02-20 Ken Yahata , Yuichiro Matsuzaki , Shiro Saito , Hideyuki Watanabe , Junko Ishi-Hayase

Wavefront Shaping has emerged over the past decade as a powerful tool to control wave propagation through complex media, initially in optics and more recently also in the microwave domain with important applications in telecommunication,…

Applied Physics · Physics 2018-01-03 Philipp del Hougne , Mathias Fink , Geoffroy Lerosey

Nitrogen-Vacancy (NV) centers in diamond are attractive tools for sensing and quantum information. Realization of this potential requires effective tools for controlling the spin degree of freedom by microwave (mw) magnetic fields. In this…

Quantum Physics · Physics 2023-02-06 Anton Savitsky , Jingfu Zhang , Dieter Suter

We calculate the efficiency with which magnetic tunnel junctions can be used as resonant detectors of incident microwave radiation via the spin-torque diode effect. The expression we derive is in good agreement with the sensitivities we…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 C. Wang , Y. -T. Cui , J. Z. Sun , J. A. Katine , R. A. Buhrman , D. C. Ralph

High performance microwave gyroscope (MG) is theoretically developed for the first time to our knowledge. MG is based on Sagnac effect in microwave ring resonator (RR), where a specially taylored phase shifter (PS) on the basis of surface…

Instrumentation and Detectors · Physics 2007-05-23 G. G. Karapetyan

The measurement of vector magnetic fields with high sensitivity and spatial resolution is important for both fundamental science and engineering applications. In particular, magnetic-field sensing with nitrogen-vacancy (NV) centers in…

Quantum Physics · Physics 2023-07-12 Takuya Isogawa , Yuichiro Matsuzaki , Junko Ishi-Hayase

The authors demonstrate readout of electrically detected magnetic resonance at radio frequencies by means of an LCR tank circuit. Applied to a silicon field-effect transistor at milli-kelvin temperatures, this method shows a 25-fold…

Materials Science · Physics 2009-11-12 H. Huebl , R. P. Starrett , D. R. McCamey , A. J. Ferguson , L. H. Willems van Beveren

A vibrating wire may be used as an instrument with a variety of applications, one of which is the measurement of magnetic fields. Often, the magnetic fields are determined by measuring the amplitude of the wire vibration under the action of…

Accelerator Physics · Physics 2020-08-25 Jason Gilbert , Cameron Baribeau
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