Quantum wells based on magnetic-dipolar-mode oscillations in disk ferromagnetic particles
Department of Electrical and Computer Engineering
Ben Gurion University of the Negev - Beer Sheva, 84105, Israel
Accepted: 6 October 2003
We show that magnetic-dipolar-mode oscillations in a normally magnetized ferromagnetic 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.
PACS: 03.65.-w – Quantum mechanics / 85.35.Be – Quantum well devices (quantum dots, quantum wires, etc.) / 76.50.+g – Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance
© EDP Sciences, 2003