Search for dissertations about: "inelastic electron tunneling"

Showing result 1 - 5 of 13 swedish dissertations containing the words inelastic electron tunneling.

  2. 1. Elastic and Inelastic Electron Tunneling in Molecular Devices

    Author : Mathias Kula; Yi Luo; Alessandro Troisi; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular electronics; inelastic electron tunneling spectroscopy; IETS; Green s function; scattering; Theoretical chemistry; Teoretisk kemi;

    Abstract : A theoretical framework for calculating electron transport through molecular junctions is presented. It is based on scattering theory using a Green's function formalism. The model can take both elastic and inelastic scattering into account and treats chemical and physical bonds on equal footing. READ MORE

  4. 2. First principles simulations of electron transport at the molecule-solid interface

    Author : Hao Ren; Yi Luo; Nicolás Lorente; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; first principles; electron transport; solid surface; inelastic electron tunneling; Quantum chemistry; Kvantkemi;

    Abstract : In this thesis I concentrate on the description of electron transport properties of microscopic objects, including molecular junctions and nano junctions, in particular, inelastic electron tunneling in surface-adsorbate systems are examined with more contemplations. Boosted by the rapid advance in experimental techniques at the microscopic scale, various electric experiments and measurements sprung up in the last decade. READ MORE

  5. 3. Electron Transport in Nanowire Quantum Devices

    Author : Henrik Nilsson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; Spin-orbit coupling; the Kondo effect; the Zeeman effect; Quantum dots; Nanowire memories; Nanowire transistors; InSb; InAs; Nanowires; Electron transport; Andreev reflections; Nanowire RF-SET; Noise in nanowires;

    Abstract : This thesis focuses on electron transport in semiconductor InAs/InP and InSb nanowire quantum devices. However, first the temperature dependence of classical charge transport in InSb nanowire field-effect transistors, FETs, is characterized, using InAs nanowire FETs as a reference. READ MORE

  6. 4. Elastic and inelastic scattering effects in conductance measurements at the nanoscale : A theoretical treatise

    Author : Peter Berggren; Jonas Fransson; Wolfgang Belzig; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Scattering theory; Scanning tunneling microscopy; tunnel junctions; molecular graphene; paramagnetic molecules; spin interaction; nano electromechanical system; Josephson junction; superconductivity; chaos; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : Elastic and inelastic interactions are studied in tunnel junctions of a superconducting nanoelectromechanical setup and in response to resent experimental superconducting scanning tunneling microscope findings on a paramagnetic molecule. In addition, the electron density of molecular graphene is modeled by a scattering theory approach in very good agreement with experiment. READ MORE

  7. 5. Electron Transport and Optical Properties in Mesoscopic Systems

    Author : Anna Grincwajg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The main subject of this Thesis is optical properties of quantum point contact systems and their influence on the electron transport. A quantum point contact is a narrow constriction in a two-dimensional electron gas, where the width of the constriction can be controlled by means of a gate voltage. READ MORE