Sökning: "spin wave"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden spin wave.

  1. 1. Micromagnetic study of spin Hall nano-oscillator arrays and their synchronization dynamics

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ari Sigurdsson; [2020]
    Nyckelord :spintronics; spin Hall nano-oscillators; spin wave; synchronization; micromagnetic modelling.; spinntronik; spinn-Hall nano-oscillatorer; spinn wave; synkronisering; mikromagnetisk modellering.;

    Sammanfattning : Spintronics is the study of electron spins and their utilization in electronic devices. Within this field, spin-based oscillators have shown promise for mi- crowave signal generation as they can operate at high frequencies, are small in scale and are compatible with modern fabrication techniques. LÄS MER

  2. 2. Characterization of InAs-Al semiconductor-superconductor hybrid devices

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Markus Aspegren; [2020]
    Nyckelord :quantum dot; superconductivity; quantum transport; josephson junction; spectroscopy; yu-shiba-rusinov; hybrid devices; sub-gap states; quantum computer; majorana bound state; bogoliubov quasiparticle; Physics and Astronomy;

    Sammanfattning : In this thesis we study charge and spin transport through InAs-Al nanowire superconductor-semiconductor hybrid devices. We focus on assessing the quality of the InAs-Al contact interface when using a weak HCl acid to wet-etch the nanowire surface prior to metal evaporation. LÄS MER

  3. 3. Real-time Entanglement of Auger and XPS-electrons: a preliminary investigation

    Kandidat-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Författare :Philip Johansson; [2019]
    Nyckelord :Entanglement; Auger; Auger decay; photoemission; XPS; ED; exact diagonalization; Physics and Astronomy;

    Sammanfattning : In this work, we employ a semi-classical approach to light matter interaction to describe and char- acterize spin configurations resulting from quantum correlations between electrons created by a photoemission event and by the following Auger decay. The system studied consists of three atomic levels and two continua. LÄS MER

  4. 4. En Översikt av Dekoherens i Kontexten av Kvantmätning med en Exakt Lösbar Ren Dekoherensmodell

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI); KTH/Skolan för teknikvetenskap (SCI)

    Författare :Andrzej Perzanowski; Frode Boman; [2019]
    Nyckelord :;

    Sammanfattning : Vi förklarar konceptet dekoherens genom att först ge bakgrundsin- formation och sedan lösa en enkel modell som är menad att representera ett Stern-Gerlach experiment. Modellen är ett spin-1/2 kvantsystem och en mätapparat som består av en kvantpartikel. LÄS MER

  5. 5. Quantum kinetic relativistic theory of linearized waves in magnetized plasmas

    Magister-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Haidar Al-Naseri; [2018]
    Nyckelord :Kinetic theory;

    Sammanfattning : In this work we have studied linear wave propagation in magnetized plasmas using a fully relativistic kinetic equation of spin-1/2 particles in the long scale approximation. The linearized kinetic equation is very long and complicated, hence we worked with restricted geometries in order to simplify the calculations. LÄS MER