منابع مشابه
Quantum Einstein-de Haas effect
The classical Einstein-de Haas experiment demonstrates that a change of magnetization in a macroscopic magnetic object results in a mechanical rotation of this magnet. This experiment can therefore be considered as a macroscopic manifestation of the conservation of total angular momentum and energy of electronic spins. Since the conservation of angular momentum is a consequence of a system's ro...
متن کاملde Haas–van Alphen effect in superconductors
A theory of the de Haas–van Alphen effect in type-II superconductors is proposed. The effect of the electron scattering by nonmagnetic impurities in a magnetic field in the potential produced by a nonuniform distribution of the order parameter in a mixed state is investigated. The magnitude of the order parameter and quasiparticle density of states are determined from the solution of the system...
متن کاملPhotonic de Haas-van Alphen effect.
Based on the recently proposed concept of effective gauge potential and magnetic field for photons, we numerically demonstrate a photonic de Haas-van Alphen effect. We show that in a dynamically modulated photonic resonator lattice exhibiting an effect magnetic field, the trajectories of the light beam at a given frequency have the same shape as the constant energy contour for the photonic band...
متن کاملA Classical version of the Einstein-de Haas Effect
The Einstein-de Haas effect is a striking example of macroscopic manifestation of microscopic quantum phenomena, in this case magnetization of electron orbital and intrinsic spins in a ferromagnetic rod by an external magnetic field that leads to a net global angular momentum having to be compensated by an opposing twist in the rod. This letter gives a system consisting of a rotating fluid laye...
متن کاملHysteresis in the de Haas-van Alphen effect.
A hysteresis loop is observed for the first time in the de Haas-van Alphen (dHvA) effect of beryllium at low temperatures and quantizing magnetic field applied parallel to the hexagonal axis of the single crystal. The irreversible behavior of the magnetization occurs at the paramagnetic part of the dHvA period in conditions of Condon domain formation arising by strong enough dHvA amplitude. The...
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ژورنال
عنوان ژورنال: Nature
سال: 2019
ISSN: 0028-0836,1476-4687
DOI: 10.1038/s41586-018-0822-7