Search for dissertations about: "ARPES"

Showing result 11 - 15 of 17 swedish dissertations containing the word ARPES.

  2. 11. Consequences of a non-trivial band-structure topology in solids : Investigations of topological surface and interface states

    Author : Magnus H. Berntsen; Oscar Tjernberg; Philip Hofmann; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; spin- and angle-resolved photoelectron spectroscopy; time-of-flight analyzer; laser based light source; topological insulator; topological crystalline insulator; thin films; surface state; interface state; Bi2Se3; Pb1-xSnxSe;

    Abstract : The development and characterization of experimental setups for angle-resolved photoelectron spectroscopy (ARPES) and spin- and angle-resolved photoelectron spectroscopy (SARPES) is described. Subsequently, the two techniques are applied to studies of the electronic band structure in topologically non-trivial materials. READ MORE

  4. 12. Atomic and electronic structures of two-dimensional layers on noble metals

    Author : Jalil Shah; Roger Uhrberg; Hafiz Muhammad Sohail; Patrick Vogt; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Two-dimensional (2D) materials, in the form of a single atomic layer with a crystalline structure, are of interest for electronic applications. Such materials can be formed by a single element, e.g., by group IV or group V elements, or as a 2D surface alloy. READ MORE

  5. 13. Atomic and Electronic Structures of Clean and Metal Adsorbed Si and Ge Surfaces : An Experimental and Theoretical Study

    Author : Johan Eriksson; Roger Uhrberg; Karsten Horn; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : In this work, a selection of unresolved topics regarding the electronic and atomic structures of Si and Ge surfaces, both clean ones and those modified by metal adsorbates, are addressed. The results presented have been obtained using theoretical calculations and experimental techniques such as photoelectron spectroscopy (PES), low energy electron diffraction (LEED) and scanning tunneling microscopy (STM). READ MORE

  6. 14. Photoelectron Spectroscopy of Cuprates and Manganites

    Author : Mats Leandersson; Lunds universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; HTSC; photoelectron spectroscopy; angle resolved photoemission; magnetoresistance; superconductivity; magnetic resonance; relaxation; spectroscopy; Kondenserade materiens egenskaper:elektronstruktur; magnetiska och optiska ; egenskaper elektriska; supraledare; magnetisk resonans; Physics; spektroskopi; resonant photoemission; Condensed matter:electronic structure; CMR; electrical; supraconductors; magnetic and optical properties; Fysik; Fysicumarkivet A:2000; Leandersson;

    Abstract : Abstract In this thesis, the high temperature superconductors (HTSC) La2CuO4+x and Bi2Sr2CaCu2O8+d and the colossal magnetoresistive (CMR) La1-xSrxMnO3 have been studied by photoelectron spectroscopy. Techniques such as angular resolved photoemission (ARPES), resonant photoemission spectroscopy (RESPES) and x-ray absorption spectroscopy have been applied, using synchrotron radiation. READ MORE

  7. 15. Scanning Tunneling Microscopy and Photoelectron Spectroscopy Studies of Si(111) and Ge(111) Surfaces : Clean and Modified by H or Sn Atoms

    Author : Ivy Razado-Colambo; Roger Uhrberg; Göran Hansson; Maria-Carmen Asensio; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : The (111) surfaces of Si and Ge were studied by scanning tunneling microscopy (STM) and photoelectron spectroscopy (PES) that are complementary techniques used to obtain structural and electronic properties of surfaces. The (111) surfaces have been of great interest because of the complex reconstructions formed by annealing. READ MORE