Sökning: "spin systems"

Visar resultat 1 - 5 av 247 avhandlingar innehållade orden spin systems.

  1. 1. Relaxation phenomena in disordered magnetic systems : spin glasses

    Författare :Peter Svedlindh; Uppsala universitet; []

    Sammanfattning : .... LÄS MER

  2. 2. Spin-Orbit and Spin-Spin Coupling in the Triplet State

    Författare :Sathya Sai Ramakrishna Raj Perumal; Hans Ågren; Ulf Wahlgren; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spin-spin; Spin-Orbit; D and E parameters; ZFS; graphene; TMM; OXA; diradicals; tris 8-hydroxyquinonline aluminium; magnetic anisotropy; magnetism; triplet;

    Sammanfattning : The underlying theory of “Spin” of an electron and its associated inter-actions causing internal fields and spectral shift to bulk-magnetism iswell established now. Our understanding of spin properties is significant andmore useful than ever before. LÄS MER

  3. 3. Tailoring the magnetic order in mesoscopic spin systems

    Författare :Henry Stopfel; Vassilios Kapaklis; Hjörvarsson Björgvin; Unnar Arnalds; John Cumings; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; artificial spin ice; magnetic nano-structures; mesoscopic spin systems; mesospins; model systems; Shakti; Saint George; interaction modifier; engineering of energy-landscape; multiple energy-scales; Fysik; Physics;

    Sammanfattning : Mesoscopic spin systems can be designed and fabricated using modern nano-fabrication techniques. These systems can contain large numbers of patterned ferromagnetic elements, for which the shape will generally determine their effective mesospin dimensionality. LÄS MER

  4. 4. Spin-Spin and Spin-Orbit coupling studies of small species and magnetic system

    Författare :Sathya S R R Perumal; Olav Vahtras; Ulf Wahlgren; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; spin-spin; spin-orbit; biradical; mcscf; Theoretical chemistry; Teoretisk kemi;

    Sammanfattning : The spin of an electron often misleadingly interpreted as the classical rotationof a particle. The quantum spin distinguishes itself from classicalrotation by possessing quantized states and can be detected by its magneticmoment. The properties of spin and its collective behavior with otherfundamental properties are fascinating in basic sciences. LÄS MER

  5. 5. Determining and Optimizing the Current and Magnetic Field Dependence of Spin-Torque and Spin Hall Nano-Oscillators : Toward Next-Generation Nanoelectronic Devices and Systems

    Författare :Seyed Amir Hossein Banuazizi; Johan Åkerman; Erik Wahlström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; nanoelectronics; spintronics; nanomagnetism; ferromagnetic materials; microwave oscillators; magnetization dynamics; spin waves; giant magneto-resistance; spin Hall effect; spin-torque nano-oscillators; spin Hall nano-oscillators; numerical modeling; electrical characterization; microwave characterization; magnetic force microscopy.; Fysik; Physics; Teknisk materialvetenskap; Materials Science and Engineering; Informations- och kommunikationsteknik; Information and Communication Technology; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Spin-torque and spin Hall nano-oscillators are nanoscale devices (about 100 nm) capable of producing tunable broadband high-frequency microwave signals ranging from 0.1 GHz to over 65 GHz that several research groups trying to reach up to 200 - 300 GHz. LÄS MER