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Electron Transport in Nanostructures: a Key to High Temperature Superconductivity?

Roeser, H.P. and Haslam, D.T. and Lopez, J.S. and Schoenermark, M.F. and Stepper, M. and Huber, F.M. and Nikoghosyan, A.S. (2010) Electron Transport in Nanostructures: a Key to High Temperature Superconductivity? Acta Astronautica, 67 (5/6), pp. 546-552. Elsevier. DOI: 10.1016/j.actaastro.2010.04.014

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Nanostructured GaAs Schottky barrier diodes are used as low noise THz heterodyne detectors. Different diodes show that the electron transport is ballistic and given by an optimized depletion thickness Depl which is shorter than the mean free path length. The best THz mixer noise temperature is achieved when the depletion thickness is twice the doping distance in GaAs with Depl=2x. There also is a linear relation between the depletion thickness and the carrier mobility μ by (2x)**2≈h/(2e)μ. Since the mobility is proportional to 1/energy and because of many similarities when comparing with properties of high temperature superconductors (HTSC) it has been investigated if the doping distance x in HTSCs is connected with 1/(kTc). It turns out that there is also a strong correlation between x and the critical transition temperature Tc given by (2x)**2 similar1/Tc. A detailed analysis and comparison suggest that the correlation equation for HTSCs is linked to the transition temperature Tc, the density of states in a 1D quantum wire, the lowest energy E1 in a 1D quantum well, and to the Fermi energy.

Item URL in elib:https://elib.dlr.de/68318/
Document Type:Article
Title:Electron Transport in Nanostructures: a Key to High Temperature Superconductivity?
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Roeser, H.P.roeser (at) irs.uni-stuttgart.deUNSPECIFIED
Haslam, D.T.haslam (at) irs.uni-stuttgart.deUNSPECIFIED
Lopez, J.S.lopez (at) irs.uni-stuttgart.deUNSPECIFIED
Schoenermark, M.F.maria.schoenermark (at) dlr.deUNSPECIFIED
Stepper, M.stepper (at) irs.uni-stuttgart.deUNSPECIFIED
Huber, F.M.felix.huber (at) dlr.deUNSPECIFIED
Nikoghosyan, A.S.nika (at) ysu.amUNSPECIFIED
Date:September 2010
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.actaastro.2010.04.014
Page Range:pp. 546-552
Series Name:Acta Astronautica
Keywords:high temperature superconductor superconducting unit area Schottky barrier diode nanostructure THz electronics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V - no assignment
DLR - Research theme (Project):V - no assignment
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > GSOC-German Space Operations Center
Deposited By: Schönermark, Maria
Deposited On:12 Jan 2011 11:46
Last Modified:10 Jan 2019 15:39

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