Search for dissertations about: "spin-polarization"

Showing result 1 - 5 of 35 swedish dissertations containing the word spin-polarization.

2. 1. Tilted Foils Nuclear Spin Polarization at REX-ISOLDE

   Author : Hans Törnqvist; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; beta-NMR; ISOLDE; tilted foils; particle scattering; post-acceleration; REX-ISOLDE; nuclear spin polarization; HIE-ISOLDE;

   Abstract : This thesis will explain and summarize my work and involvement in experiments aimed at producing nuclear spin polarization of post-accelerated beams of ions with the tilted-foils technique at the REX-ISOLDE linear accelerator at CERN. Polarizing the nuclear spin of radioactive beams in particular may provide access to observables which may be difficult to obtain otherwise. READ MORE

4. 2. Electronic, Transport, and Optical Properties of Broken-Gap Heterostructures

   Author : Karin Nilsson; Matematisk fysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; relaxation; magnetic resonance; supraconductors; magnetic and optical properties; k.p calculations; Condensed matter:electronic structure; electrical; interband transport; electron-hole hybridization; spin polarization; spectroscopy; spektroskopi; Kondenserade materiens egenskaper:elektronstruktur; egenskaper elektriska; magnetiska och optiska ; supraledare; magnetisk resonans;

   Abstract : This thesis examines the physical properties of broken-gap heterostructures using a multiband k.p model and self-consistent calculations. Broken-gap heterostructures, made from InAs, GaSb, and AlSb, are characterized by a special band alignment with an overlap between the InAs conduction band and the GaSb valence band. READ MORE

5. 3. Tilted Foils Nuclear Spin Polarization and Measurement with Coulomb Excitation

   Author : Hans Törnqvist; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Tilted; Foils; Polarization; Excitation; Coulomb; Nuclear; Spin;

   Abstract : Developing new experimental tools is essential to expand the possibilites of probing the structure of atomic nuclei. The better the currently known properties of nuclei can be manipulated, the more information can be extracted from data collected in nuclear reaction experiments. READ MORE

6. 4. Exchange

   Author : Lars A. Salmi; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; metastable helium; secondary electrons; surface states; overlayers; single-triplet conversion; Auger deexcitation; spin-polarization; exchange; Auger neutralization;

   Abstract : .... READ MORE

7. 5. Room-temperature defect-engineered spin functionalities in Ga(In)NAs alloys

   Author : Yuttapoom Puttisong; Weimin Chen; Irina Buyanova; Martin S. Brandt; Linköpings universitet; []
   Keywords : ;

   Abstract : Semiconductor spintronics is one of the most interesting research fields that exploits both charge and spin properties for future photonics and electronic devices. Among many challenges of using spin in semiconductors, efficient generation of electron spin polarization at room temperature (RT) remains difficult. READ MORE