Lateral electron tunneling through single self-assembled InAs quantum dots coupled to superconducting nanogap electrodes. Applied Physics Letters, 91(11):112102, September, 2007.
Lateral electron tunneling through single self-assembled InAs quantum dots coupled to superconducting nanogap electrodes [link]Paper  doi  abstract   bibtex   
The authors have fabricated superconductor-quantum dot-superconductor (SC-QD-SC) junctions by using SC aluminum electrodes with narrow gaps laterally contacting a single self-assembled InAs QD. The fabricated junctions exhibited clear Coulomb staircases and Coulomb oscillations at 40mK40mK\textlessmath display="inline" overflow="scroll" altimg="eq-00001.gif"\textgreater\textlessmrow\textgreater\textlessmn\textgreater40\textless/mn\textgreater\textlessmspace width="0.3em"\textgreater\textless/mspace\textgreater\textlessmi\textgreatermK\textless/mi\textgreater\textless/mrow\textgreater\textless/math\textgreater. Furthermore, clear suppression in conductance was observed for the source-drain voltage, ∣VSD∣\textless2Δ∕e∣VSD∣\textless2Δ∕e\textlessmath display="inline" overflow="scroll" altimg="eq-00002.gif"\textgreater\textlessmrow\textgreater\textlessmrow\textgreater\textlessmo\textgreater∣\textless/mo\textgreater\textlessmsub\textgreater\textlessmi\textgreaterV\textless/mi\textgreater\textlessmi\textgreaterSD\textless/mi\textgreater\textless/msub\textgreater\textlessmo\textgreater∣\textless/mo\textgreater\textless/mrow\textgreater\textlessmo\textgreater<\textless/mo\textgreater\textlessmn\textgreater2\textless/mn\textgreater\textlessmi\textgreaterΔ\textless/mi\textgreater\textlessmo\textgreater∕\textless/mo\textgreater\textlessmi\textgreatere\textless/mi\textgreater\textless/mrow\textgreater\textless/math\textgreater, where ΔΔ\textlessmath display="inline" overflow="scroll" altimg="eq-00003.gif"\textgreater\textlessmi\textgreaterΔ\textless/mi\textgreater\textless/math\textgreater is the SC energy gap of Al. The absence of Josephson current that flows through QDs is due to the strong Coulomb interaction and non-negligible thermal fluctuation in our measurement system.
@article{noauthor_lateral_2007,
	title = {Lateral electron tunneling through single self-assembled {InAs} quantum dots coupled to superconducting nanogap electrodes},
	volume = {91},
	issn = {0003-6951},
	url = {http://aip.scitation.org/doi/10.1063/1.2779970},
	doi = {10.1063/1.2779970},
	abstract = {The authors have fabricated superconductor-quantum dot-superconductor (SC-QD-SC) junctions by using SC aluminum electrodes with narrow gaps laterally contacting a single self-assembled InAs QD. The fabricated junctions exhibited clear Coulomb staircases and Coulomb oscillations at 40mK40mK{\textless}math display="inline" overflow="scroll" altimg="eq-00001.gif"{\textgreater}{\textless}mrow{\textgreater}{\textless}mn{\textgreater}40{\textless}/mn{\textgreater}{\textless}mspace width="0.3em"{\textgreater}{\textless}/mspace{\textgreater}{\textless}mi{\textgreater}mK{\textless}/mi{\textgreater}{\textless}/mrow{\textgreater}{\textless}/math{\textgreater}. Furthermore, clear suppression in conductance was observed for the source-drain voltage, ∣VSD∣{\textless}2Δ∕e∣VSD∣{\textless}2Δ∕e{\textless}math display="inline" overflow="scroll" altimg="eq-00002.gif"{\textgreater}{\textless}mrow{\textgreater}{\textless}mrow{\textgreater}{\textless}mo{\textgreater}∣{\textless}/mo{\textgreater}{\textless}msub{\textgreater}{\textless}mi{\textgreater}V{\textless}/mi{\textgreater}{\textless}mi{\textgreater}SD{\textless}/mi{\textgreater}{\textless}/msub{\textgreater}{\textless}mo{\textgreater}∣{\textless}/mo{\textgreater}{\textless}/mrow{\textgreater}{\textless}mo{\textgreater}\&lt;{\textless}/mo{\textgreater}{\textless}mn{\textgreater}2{\textless}/mn{\textgreater}{\textless}mi{\textgreater}Δ{\textless}/mi{\textgreater}{\textless}mo{\textgreater}∕{\textless}/mo{\textgreater}{\textless}mi{\textgreater}e{\textless}/mi{\textgreater}{\textless}/mrow{\textgreater}{\textless}/math{\textgreater}, where ΔΔ{\textless}math display="inline" overflow="scroll" altimg="eq-00003.gif"{\textgreater}{\textless}mi{\textgreater}Δ{\textless}/mi{\textgreater}{\textless}/math{\textgreater} is the SC energy gap of Al. The absence of Josephson current that flows through QDs is due to the strong Coulomb interaction and non-negligible thermal fluctuation in our measurement system.},
	number = {11},
	urldate = {2017-01-25},
	journal = {Applied Physics Letters},
	month = sep,
	year = {2007},
	pages = {112102},
}
Downloads: 0
About
Documentation
Keywords
Search
Users
Terms and Conditions of Use
Privacy Policy
Sitemap
© BibBase.org 2021