Sökning: "spin relaxation"

Visar resultat 21 - 25 av 118 avhandlingar innehållade orden spin relaxation.

  1. 21. Ultrafast spin dynamics and relaxation in metallic ferromagnets

    Författare :Vivek Unikandanunni; Stefano Bonetti; Olof Karis; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Magnetization dynamics; Three temperature model; Cobalt; Anisotropy; Electron-phonon coupling; THz; Platinum; Silver; fysik; Physics;

    Sammanfattning : We performed ultrafast demagnetization measurements on epitaxial hcp-cobalt thin film with the easy axis in the plane of the film by pumping the sample with 400 nm radiation and probing the magneto-optic effects in the longitudinal magneto optic Kerr effect geometry using 800 nm radiation. The in-plane magnetic anisotropy of the sample enabled us to measure the demagnetization dynamics along two different crystalline directions, namely along the easy axis and at 45 degrees between the easy and hard axes. LÄS MER

  3. 22. Nuclear spin relaxation in paramagnetic complexes in solution

    Författare :Tomas Nilsson; Håkan Wennerström; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : .... LÄS MER

  4. 23. Nuclear spin relaxation in paramagnetic transition metal complexes : a carbon-13 NMR and quantum chemical study

    Författare :Lars Nordenskiöld; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 24. Intermolecular interactions in liquids : a nuclear spin relaxation and computer simulation study

    Författare :Arnold Maliniak; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  7. 25. Some aspects of the slow motion problem in the NMR-relaxation theory : a theoretical study of high spin systems

    Författare :Per-Olof Westlund; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : A theory of nuclear spin relaxation in paramagnetic complexes, allowing for the electron spin relaxation to be in the slow motion regime, is presented. The lattice i3 described in terms of the electron Zeeman interaction, a zero field splitting (ZFS) and a Markov operator for the relevant classical degrees of freedom. LÄS MER