Quantum ferromagnetic transition in clean Dirac metals

Magnetocrystalline anisotropy and orbital polarization in ferromagnetic transition metals

The magnetocrystalline anisotropy energies (MAEs) of the ferromagnetic metals bcc Fe, fcc and hcp Co, and fcc Ni have been calculated by using the ab initio tight-binding method. Disentangling the strong correlation among the d orbitals with the Hamiltonian in the local spin-density approximation, we have investigated the orbital polarizations induced by the Hubbard U and Racah B. The experimen...

Magnetic behavior of clusters of ferromagnetic transition metals.

Quantum phase transition in a clean two-dimensional electron system.

A quantum phase transition that was recently observed in a high-mobility silicon metal-oxide-semiconductor field-effect transistor is analyzed in terms of a scaling theory. The most striking characteristic of the transition is a divergence of the thermopower, according to an inverse linear law, as a critical value of the electron density is approached. A scaling description of this transition y...

Ferromagnetic quantum phase transition in Sr1−xCaxRuO3 thin films

The ferromagnetic quantum phase transition in the perovskite ruthenate Sr1−xCaxRuO3 is studied by lowtemperature magnetization and electrical resistivity measurements on thin films. The films were grown epitaxially on SrTiO3 substrates using metalorganic aerosol deposition and characterized by X-ray diffraction and room temperature scanning tunneling microscopy. High residual resistivity ratios...

Superconducting proximity effect in clean ferromagnetic layers

M. Zareyan, W. Belzig, and Yu. V. Nazarov Institute for Advanced Studies in Basic Sciences, 45195-159, Zanjan, Iran Department of Physics and Astronomy, University of Basel, Klingelbergstr. 82, 8056 Basel, Switzerland Department of Applied Physics and Delft Institute of Microelectronics and Submicrontechnology, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands ~Receiv...