Quantum mechanics

Magnetic field

Ecology

Squid

Magnetic damping

Magnetization

Biology

Statistics

Magnetometer

Realization (probability)

Ferromagnetism

Electrodynamic suspension

Vibration

Meissner effect

Dissipation

Thermodynamics

Physics

Finite element method

Magnetic energy

Levitation

Mathematics

Optics

Superconductivity

Resonator

Condensed matter physics

Quantum

Spin-stabilized magnetic levitation

Electromagnetic coil

Magnetic levitation

Optoelectronics

Magnet

Physical Review Applied

Levitation of magnetic or superconducting microparticles is a promising technology for applications such as ultrasensitive force and gravity sensors, and experiments in fundamental and quantum physics. Unfortunately, achieving very low dissipation has proven to be more difficult than expected. This study demonstrates levitation of micromagnets by the Meissner effect above type-I superconductors, with very long damping times beyond 10${}^{4}$ s and quality factors exceeding 10${}^{7}$. The authors furthermore investigate using a levitated micromagnet as an ultrasensitive magnetometer, pointing out the potential for magnetic-field resolution beyond the current state of the art.

Ultralow Mechanical Damping with Meissner-Levitated Ferromagnetic Microparticles