H. Ohlsén

Effect of nickel impurities on the conduction electron Zeeman splitting in palladium

The conduction electron Zeeman splitting has been investigated on the Gamma sheet, alpha orbit and X pocket in palladium doped with nickel (less than 500 PPM), utilising the de Haas-van Alphen technique. The spin-splitting-zero contours have been mapped out completely on the Gamma sheet and are compared with those in pure palladium. An increase in the cyclotron orbit g-factor due to the nickel is deduced for all investigated sheets. The increased Zeeman splitting of the host electrons may contribute to more than half of the total magnetisation enhancement caused by the presence of the nickel impurities.

Anisotropy of the itinerant-electron Zeeman splitting in iridium

A thorough investigation of the spin-splitting factor for the Gamma 6 Fermi surface sheet of iridium has been performed. Several spin-splitting zero contours have been mapped out together with the amplitude variation in the symmetry planes, giving a detailed picture of the anisotropy of the cyclotron orbit g-factor.

Anisotropy of the conduction electron Zeeman splitting on the X-pocket holes in palladium

The conduction electron Zeeman splitting has been measured on the X-centred hole pockets in palladium utilising the de Haas-van Alphen technique. Two spin-splitting zero contours have been revealed and a large anisotropy was found for the cyclotron orbit g-factor (gc). The variation of the gc-factor on the X pockets is compared with previous results on Fermi surface sheets in palladium and platinum.

Anisotropy of the conduction electron Zeeman splitting in rhodium

Anisotropy of the conduction electron Zeeman splitting has been found on part of the Gamma 6 sheet in rhodium utilising the de Haas-van Alphen technique. Three spin-splitting zeros in the (110) plane have been revealed, leading to a large anisotropy of the cyclotron orbit g factor.

Measurement of the conduction electron Zeeman splitting in platinum

Abstract The cyclotron orbit g -factor in platinum has been investigated using the de Haas-van Alphen effect. Several new features of the spin splitting zero (SSZ) contours of the Γ-centered electron sheet have been established. Six closed spin splitting zero contours of the fundamental of this sheet have been mapped out together with several branches of spin splitting zero contours of the second harmonic. The results give an almost complete determination of the anisotropy of the cyclotron orbit g -factor of the Γ-centered electron sheet in platinum.

Experimental study of itinerant Zeeman splitting in platinum group metals

Abstract The conduction electron Zeeman splitting has been measured by means of the de Haas-van Alphen effect. Results are presented for the Γ-centered electron sheet in Pd, Pt and Ir, and for the α-orbit in Pd and Pt. Measurements from the X-pocket in Pd are also reported.

Measurements of the conduction electron g-factor in platinum

Abstract The anisotropy of the cyclotron orbit g -factor in platinum has been studied through mapping out spin splitting zero contours of the fundamental and second harmonic on the Γ-centered electron sheet using the de Haas-van Alphen effect. Several new features of the spin splitting zero contours of the fundamental have been established.