IMAGE OF THE FERMI SURFACE IN SPIN WAVE SPECTRA OF RARE EARTH METALS

Technical Report · Sat Dec 31 23:00:00 EST 1960

OSTI ID:4064905

Woll, Jr, E J; Nettel, S J

Calculations of spin wave spectra in rare earth metals were carried out to find whether images of the electronic Fermi surface might be observable. In the space of spin wave vectors q there should occur surfaces on which the curves, being determined by the shape of the Fermi surface. The spin wave spectrum is found by assuming that the coupling between ionic spins takes place primarily through exchange scattering of conduction electrons, paralleling the calculation of the coupling of nuclear spins. Spin wave dispersion curves in two directions of high symmetry are computed. The sought-for kinks in the dispersion curves are found to amount to about 2% of the maximum excitation frequency. The development is for ferromagnets, but extension to spiral anti-ferromagnets is taken briefly. (auth)

• Research Organization: California. Univ., La Jolla
• NSA Number: NSA-15-019841
• OSTI ID: 4064905
• Report Number(s): NP-10088
• Country of Publication: United States
• Language: English

Related Subjects

COUPLING
DIAGRAMS
ELECTRONICS
ELECTRONS
ENERGY LEVELS
EXCITATION
FERMI GAS
FERMI LEVEL
FERMI SURFACE
FERMIONS
FERROMAGNETIC MATERIALS
FREQUENCY
INTERACTIONS
IONS
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
RARE EARTHS
SCATTERING
SPECTRA
SPIN
SPIN WAVES
SURFACES