Sökning: "single-electron tunneling"

Visar resultat 6 - 10 av 32 avhandlingar innehållade orden single-electron tunneling.

1. 6. Quench-Condensed Metallic Clusters Studied by Single Electron Tunneling

   Författare :Andrey Danilov; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Using angle deposition through conventional electron-beam lithographic masks as the sample resistance was measured in situ, we defined constrictions with widths and lengths of about 5 nm in thin (1-3) nm granular films. The nominal film thickness in the constriction could be varied stepwise by in situ film depositions, changing the grain size and the configuration of the tunneling paths. LÄS MER

3. 7. Parity effects in Josephson tunneling through a Coulomb dot

   Författare :Magnus Gisselfält; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; single-electron tunneling; Josephson tunneling; Coulomb blockade; parity effect;

   Sammanfattning : .... LÄS MER

4. 8. The Radio Frequency Single-Electron Transistor: Noise Properties and its Potential for Detecting Electrons on Helium

   Författare :Serguei Kafanov; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; single electron transistor; Coulomb blockade; SET; radio;

   Sammanfattning : In this thesis the noise in the single electron transistor (SET) has been investigated.The charge sensitivity for the radio frequency single electron transistor(RF-SET) was measured. The demonstrated result is better than the previouslybest reported value both at 40 mK, and at 4.2 K. LÄS MER

5. 9. Spin Transport Studies of Nanoscaled Ferromagnetic Tunneling Devices

   Författare :Ruisheng Liu; Fasta tillståndets fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tunneling anisotropic magnetoresistance.; tunneling magnetoresistance; ferromagnetic single electron transistor; spin relaxation; Spin transport;

   Sammanfattning : This thesis presents spin transport studies of ferromagnetic nano-scaled tunneling devices fabricated by atomic force microscopy (AFM) and electron beam lithography (EBL). The thesis covers three main topics: The first topic is a study of spin accumulation (relaxation) in Au nano-structures using Ni/Au/Ni ferromagnetic single electron transistors (F-SETs). LÄS MER

7. 10. The Radio Frequency Single-Electron Transistor and the Horizon Picture for Tunneling

   Författare :Peter Wahlgren; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The main part of this thesis concerns the development of a new type of single electron transistor (SET) called the radio frequency single electron transistor (RF-SET). The RF-SET is the most sensitive electrometer demonstrated. LÄS MER