Sökning: "quantum wire"

Visar resultat 16 - 20 av 23 avhandlingar innehållade orden quantum wire.

1. 16. Strain and Charge Transport in InAsP-InP and InP-InAs Core-Shell Nanowires

   Författare :David Göransson; NanoLund: Centre for Nanoscience; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanowire; InAsP-InP core-shell nanowire; InP-InAs core-shell nanowire; strain; XRD; charge transport; Coulomb blockade; Josephson junction; Fysicumarkivet A:2019:Göransson;

   Sammanfattning : The mechanical, optical, and electrical properties of III-V semiconductor heterostructures are investigated in thisthesis. The semiconductor materials are grown by metal-organic vapor phase epitaxy, yielding wire shaped crystals(nanowires) having a length of ~ 1 μm and diameter of ~ 100 nm. LÄS MER

3. 17. Selective Epitaxy of Indium Phosphide and Heteroepitaxy of Indium Phosphide on Silicon for Monolithic Integration

   Författare :Fredrik Olsson; Sebastian Lourdudoss; Shigeya Naritsuka; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Semiconductor Physics; Semiconductor physics; Halvledarfysik;

   Sammanfattning : A densely and monolithically integrated photonic chip on indium phosphide is greatly in need for data transmission but the present day’s level of integration in InP is very low. Silicon enjoys a unique position among all the semiconductors in its level of integration. LÄS MER

4. 18. Charge dynamics and electronic structure of pi-conjugated systems

   Författare :Åsa Johansson; Michael Springborg; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : The research presented in this theses deals with the electronic properties of 1rconjugated molecular systems. Charge dynamics has been studied in order to get a better understanding of the physical processes behind charge transport in these materials, intended to be used in organic molecular electronic devices. LÄS MER

5. 19. Correlation Effects in Nanostructures

   Författare :Paata Kakashvili; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; conformal field theory; Coulomb blockade; Wigner crystal.; Strongly correlated electrons; Kondo effect; bosonization; Luttinger liquid; STM; single-electron transistor;

   Sammanfattning : In this Ph.D. thesis I present the background and providefurther details to the work presented in the appended papers. The background consists of brief overviews of Kondo physics, Luttinger liquid theory, and conformal field theory. LÄS MER

7. 20. Nanoscale Crystal Growth: The Importance of Interfaces and Phase Boundaries Kristallväxt på Nanometer Skala: Vikten av Ytor och Gränser

   Författare :Brent Wacaser; Fasta tillståndets fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; kristallografi; fasjämvikt; Semiconductory physics; Halvledarfysik; thermal and mechanical properties; crystallography; phase equilibria; Kondenserade materiens egenskaper:struktur; egenskaper termiska och mekaniska ; Condensed matter:stucture; Fysik; Physics; epitaxy; VLS; MOVPE; CBE; nanostructures; crystal growth; nanowires; III-V semiconductors; growth mechanism; MBE; Material technology; Materiallära; materialteknik;

   Sammanfattning : Surfaces and interfaces have a special significance to nanotechnology because the surface/volume ratio of nanomaterials is larger than for bulk materials. Therefore, interfaces of nanomaterials are usually more important to the properties of nanomaterials than for larger scale materials. LÄS MER