Zobrazeno 1 - 8
of 8
pro vyhledávání: '"S F, Roth"'
Publikováno v:
Scopus-Elsevier
Four-point measurements are carried out on a Hall bar using specially designed capacitive contacts, reproducing the transport characteristics Rxx measured using standard ohmic contacts. All Rxx measurements using various combinations of ohmic and cap
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 22:292-295
We report on non-equilibrium transport measurements as a function of Fermi-energy of two-dimensional (2D) to one-dimensional (1D) resonant tunneling transistors. The investigated samples are fabricated by means of the cleaved-edge overgrowth method t
Autor:
J. Moser, C. Knaak, Gerhard Abstreiter, A. Fontcuberta i Morral, Matthew Grayson, S. Dasgupta, S. F. Roth, Max Bichler
A doping series of AlAs (001) quantum wells with Si delta-modulation doping on both sides reveals different dark and post-illumination saturation densities, as well as temperature dependent photoconductivity. The lower dark two-dimensional electron d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b59cdbce071acd8800cd154ca096d9ab
A quantum wire is fabricated on (001)-GaAs at the intersection of two overgrown cleaves. The wire is contacted at each end to n+ GaAs layers via two-dimensional (2D) leads. A sidegate controls the density of the wire revealing conductance quantizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::baa5f9e87787084ad81a705f9341832c
http://arxiv.org/abs/cond-mat/0604083
http://arxiv.org/abs/cond-mat/0604083
We demonstrate a contact design that allows four-terminal magnetotransport measurements of cleaved-edge overgrown two-dimensional electron and hole systems. By lithographically patterning and etching a bulk-doped surface layer, finger-shaped leads ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf444df2310c30a1d6e213228d222433
http://arxiv.org/abs/cond-mat/0511057
http://arxiv.org/abs/cond-mat/0511057
Publikováno v:
AIP Conference Proceedings.
Twofold application of the well established cleaved‐edge overgrowth technique can achieve an orientation of a quantum wire parallel to the growth axis of a prior grown substrate. Hence a variation of the substrate layers directly transfers the resu
Publikováno v:
Journal (Canadian Dental Association). 61(11)
The objective of this study was to determine the absorbed radiation doses to various structures within the head and neck as a result of routine mandibular and maxillary occlusal radiography. Five projections were investigated: the anterior mandibular
Publikováno v:
Applied Physics Letters. 92:173505
A vertical pillar shadow epitaxy technique is introduced for fabricating coplanar striped or cross-hatched GaAs∕AlAs two-dimensional heterostructures, where the pattern area of each individual layer can be varied in situ. An array of vertical pilla