Sökning: "topological order"

Visar resultat 1 - 5 av 38 uppsatser innehållade orden topological order.

  1. 1. Electron-skyrmion systems, in and out of equilibrium, and isolated or contacted to reservoirs

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

    Författare :Emil Adam Jonatan Östberg; [2023]
    Nyckelord :skyrmion; skyrmions; NEGF; freen s function; quantum transport; non-equlibrium; topology; topological charge; skyrmionics; current induced; open system; Physics and Astronomy;

    Sammanfattning : A Kondo lattice skyrmion model in contact with a macroscopic environment is simulated to explore skyrmion dynamics, which is an extension of previous work. The system is simulated using non-equilibrium Green's functions within the generalized Kadanoff-Baym ansatz and the wide band limit. LÄS MER

  3. 2. Development of acomplex robot structure : Development and analysis of a cast triple traction system for the robotoperating at CERN facilities

    Magister-uppsats, Jönköping University/JTH, Material och tillverkning

    Författare :Gerard Aliana Cervera; [2023]
    Nyckelord :CERNBot; Traction; Topology optimization; Sand casting;

    Sammanfattning : All devices working in hazardous environments have specific requirements to reduce the intervention of human power as much as possible. The robot that this thesis is focused on is no exception to this rule. LÄS MER

  4. 3. Matrix Chain Multiplications and Temporary Storage

    Kandidat-uppsats, Umeå universitet/Institutionen för datavetenskap

    Författare :Emil Nilsson; [2023]
    Nyckelord :;

    Sammanfattning :     Evaluating an expression in linear algebra using the known Basic Linear Algebra Subprograms library often requires temporary storage to hold intermediate results. However, matrix chain multiplication is typically analyzed in terms of time complexity, with the goal of minimizing the number of floating point operations (flops) for an expression. LÄS MER

  5. 4. Control Barrier Functions for Formation Control of Leader-follower Multi-agent Systems

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

    Författare :Tianrun Sun; [2023]
    Nyckelord :Multi-agent System; Leader-follower System; Formation Control; Control Barrier Function; Connectivity Maintenance; Multi-agent-system; Leader-follower-system; Formations Kontroll; Kontroll Barriär Funktion; Underhåll av Anslutningsmöjligheter;

    Sammanfattning : This thesis studies formation control for a class of general leader-follower multi-agent systems with Control Barrier Functions (CBFs) such that connectivity maintenance is fulfilled for all the neighboring agents. In leader-follower multi-agent systems, only the leader agents are controlled by the externally designed input, while the followers are guided through their dynamic couplings with the neighboring agents. LÄS MER

  7. 5. Characterization of Bi-incorporated InSb(111)A/B Surfaces : An STM and XPS Study

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Shengpeng Huang; [2023]
    Nyckelord :indium antimonide; surface reconstructions; bismuth deposition; scanning tunneling microscopy; X-ray photoelectron spectroscopy.; Physics and Astronomy;

    Sammanfattning : In recent years, III-V semiconductor materials have received increasing attention due to their admirable electronic properties like direct tunable bandgaps and high charge carrier mobility. Indium Antimonide (InSb) possesses the largest electron mobility among III-V materials and is promising for infrared detectors, high-speed field effect transistors, and spintronics. LÄS MER