Low-Temperature Resistivity in a Nearly Half-Metallic Ferromagnet

Low temperature resistivity in a nearly half-metallic ferromagnet

We consider electron transport in a nearly half-metallic ferromagnet, in which the minority spin electrons close to the band edge at the Fermi energy are Anderson-localized due to disorder. For the case of spin-flip scattering of the conduction electrons due to the absorption and emission of magnons, the Boltzmann equation is exactly soluble to the linear order. From this solution we calculate ...

Ferromagnet-Insulator-Ferromagnet Tunneling with One Half-Metallic Electrode

Ferromagnet-insulator-Ferromagnet (FM-I-FM) tunnel junctions were prepared with one ferromagnet being NiMnSb, a compound predicted by deGroot et al. to be half-metallic. X-ray diffraction and Rutherford back scattering experiments indicated that the deposited NiMnSb exhibited the desired structure and composition. However, a junction magnetoresistance (JMR) of only 1.5% at room temperature and ...

Organometallic benzene-vanadium wire: A one-dimensional half-metallic ferromagnet.

Using density functional theory we perform theoretical investigations of the electronic properties of a freestanding one-dimensional organometallic vanadium-benzene wire. This system represents the limiting case of multidecker Vn(C6H6)(n+1) clusters which can be synthesized with established methods. We predict that the ground state of the wire is a 100% spin-polarized ferromagnet (half-metal). ...

Nonquasiparticle states in the half-metallic ferromagnet NiMnSb

Charge dynamics in the half-metallic ferromagnet CrO2

Infrared spectroscopy is used to investigate the electronic structure and charge carrier relaxation in crystalline films of CrO2 which is the simplest of all half-metallic ferromagnets. Chromium dioxide is a bad metal at room temperature but it has a remarkably low residual resistivity (,5 mV cm) despite the small spectral weight associated with free carrier absorption. The infrared measurement...