Quantum wells based on magnetic-dipolar-mode oscillations in disk ferromagnetic particles

PACS. 76.50.+g – Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance. Abstract. – We show that magnetic-dipolar-mode oscillations in a normally magnetized ferro-magnetic disk have typical atomic properties like discrete-energy levels. Because of the discrete-energy eigenstates of such oscillations resulting from structural confinement, one can describe the oscillating system as a collective motion of quasiparticles —the light magnons. We calculate the energy levels in a magnetic quantum well and the effective masses of the light magnons. Introduction. – Semiconductor quantum dots are manmade structures in which electrons are confined in all three spatial directions similar to the physical situation in atoms. As they show typical atomic properties like discrete-energy levels and shell structures, they are often referred to as artificial atoms [1]. This provides various implementations of solid-state systems based on semiconductor quantum dots. It is interesting that confinement phenomen