Ferromagnetic levitation and harmonic trapping of a milligram-scale Yttrium Iron Garnet sphere

• URL: http://arxiv.org/abs/2306.13917v2
• Date: Tue, 19 Sep 2023 11:04:46 GMT
• Title: Ferromagnetic levitation and harmonic trapping of a milligram-scale Yttrium Iron Garnet sphere
• Authors: Maria Fuwa, Ryosuke Sakagami, and Tsuyoshi Tamegai
• Abstract summary: We report passive magnetic levitation and harmonic trapping of a Yttrium Iron Garnet sphere at 4 K. The dynamics of the levitated sphere was optically measured to have trapping of up to around 600 Hz. Our results can provide a novel system where magnetism, rigid body motions, microwaves, and optics interact.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report passive magnetic levitation and three-dimensional harmonic trapping of a 0.3 milligram, 0.5 millimeter diameter Yttrium Iron Garnet sphere at 4 K. The gradient of an external magnetic field is used for vertical trapping, while the finite size effect of the diamagnetic effect is used for horizontal trapping. The dynamics of the levitated sphere was optically measured to have trapping frequencies of up to around 600 Hz and mechanical $Q$-factors in the order of $Q \sim 10^3$. These results were quantitatively reproduced by three-dimensional finite element method simulations. Our results can provide a novel system where magnetism, rigid body motions, microwaves, and optics interact.

Related papers

• Characterisation of a levitated sub-mg ferromagnetic cube in a planar alternating-current magnetic Paul trap [0.0]
  We characterize a sub-mgmagnetic cube levitated in an alternating-current planar magnetic Paul trap at room temperature. This technique sets out a path for MHz librational modes in the micron-sized particle limit, allowing for magnetic coupling to superconducting circuits and spin-based quantum systems.
  arXiv  Detail & Related papers  (2024-08-13T11:54:34Z)
• Feedback Cooling of an Insulating High-Q Diamagnetically Levitated Plate [0.0]
  We demonstrate the passive, diamagnetic levitation of a centimeter-sized massive oscillator. The material, though highly diamagnetic, is an electrical insulator. We apply delayed feedback to cool the vertical motion of frequency 19 Hz from room temperature to 320 millikelvin.
  arXiv  Detail & Related papers  (2023-12-04T06:22:17Z)
• Imaging magnetism evolution of magnetite to megabar pressure range with quantum sensors in diamond anvil cell [57.91882523720623]
  We develop an in-situ magnetic detection technique at megabar pressures with high sensitivity and sub-microscale spatial resolution. We observe the macroscopic magnetic transition of Fe3O4 in the megabar pressure range from strong ferromagnetism (alpha-Fe3O4) to weak ferromagnetism (beta-Fe3O4) and finally to non-magnetism (gamma-Fe3O4) The presented method can potentially investigate the spin-orbital coupling and magnetism-superconductivity competition in magnetic systems.
  arXiv  Detail & Related papers  (2023-06-13T15:19:22Z)
• Stable magnetic levitation of soft ferromagnets for macroscopic quantum mechanics [0.0]
  We propose a system for passive magnetic levitation and three-dimensional harmonic trapping of soft ferromagnets. The utilization of soft ferromagnet's internal collective spin excitation may allow quantum mechanical phenomena with particles as large as the sub-millimeter-scale.
  arXiv  Detail & Related papers  (2023-03-31T07:22:49Z)
• Measuring the magnon-photon coupling in shaped ferromagnets: tuning of the resonance frequency [50.591267188664666]
  cavity photons and ferromagnetic spins excitations can exchange information coherently in hybrid architectures. Speed enhancement is usually achieved by optimizing the geometry of the electromagnetic cavity. We show that the geometry of the ferromagnet plays also an important role, by setting the fundamental frequency of the magnonic resonator.
  arXiv  Detail & Related papers  (2022-07-08T11:28:31Z)
• A background-free optically levitated charge sensor [50.591267188664666]
  We introduce a new technique to model and eliminate dipole moment interactions limiting the performance of sensors employing levitated objects. As a demonstration, this is applied to the search for unknown charges of a magnitude much below that of an electron. As a by-product of the technique, the electromagnetic properties of the levitated objects can also be measured on an individual basis.
  arXiv  Detail & Related papers  (2021-12-20T08:16:28Z)
• Demonstrating levitation within a microwave cavity [0.0]
  We report the first successful experiments with a levitated millimeter-scale neodymium magnet within a centimeter-scale superconducting aluminum coaxial quarter-wave stub cavity. Resonance spectra are collected via a vector network analyzer (VNA) between temperatures of 5 K and 50 mK revealing movement of the magnet inside of the cavity.
  arXiv  Detail & Related papers  (2021-01-05T01:42:09Z)
• Meissner levitation of a millimeter size neodymium magnet within a superconducting radio frequency cavity [0.0]
  We report on the magnetic levitation of a millimeter sized neodymium permanent magnet within the interior of a superconducting radio frequency (SRF) cavity. This is the first experimental work on levitating a magnet within an SRF cavity.
  arXiv  Detail & Related papers  (2020-11-06T00:20:05Z)
• Ferromagnetic Gyroscopes for Tests of Fundamental Physics [49.853792068336034]
  A ferromagnetic gyroscope (FG) is a ferromagnet whose angular momentum is dominated by electron spin polarization and that will precess under the action of an external torque. We model and analyze FG dynamics and sensitivity, focusing on practical schemes for experimental realization.
  arXiv  Detail & Related papers  (2020-10-17T07:13:50Z)
• High-Frequency Gravitational-Wave Detection Using a Chiral Resonant Mechanical Element and a Short Unstable Optical Cavity [59.66860395002946]
  We suggest the measurement of the twist of a chiral mechanical element induced by a gravitational wave. The induced twist rotates a flat optical mirror on top of this chiral element, leading to the deflection of an incident laser beam. We estimate a gravitational wave strain sensitivity between 10-21/sqrtHz and 10-23/sqrtHz at around 10 kHz frequency.
  arXiv  Detail & Related papers  (2020-07-15T20:09:43Z)
• Gravity Probe Spin: Prospects for measuring general-relativistic precession of intrinsic spin using a ferromagnetic gyroscope [51.51258642763384]
  An experimental test at the intersection of quantum physics and general relativity is proposed. The behavior of intrinsic spin in spacetime is an experimentally open question. A measurement is possible by using mm-scale ferromagnetic gyroscopes in orbit around the Earth.
  arXiv  Detail & Related papers  (2020-06-16T17:18:44Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.