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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Nanothermometer Based on Resonant Tunneling Diodes: From Cryogenic to Room Temperatures

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Pfenning, Andreas [1, 2] ; Hartmann, Fabian [1, 2] ; Sousa Dias, Mariama Rebello [3] ; Castelano, Leonardo Kleber [3] ; Suessmeier, Christoph [1, 2] ; Langer, Fabian [1, 2] ; Hoefling, Sven [4, 1, 2] ; Kamp, Martin [1, 2] ; Marques, Gilmer Eugenio [3] ; Worschech, Lukas [1, 2] ; Lopez-Richard, Victor [3]
Total Authors: 11
[1] Univ Wurzburg, Phys, Tech Phys, D-97074 Wurzburg - Germany
[2] Wilhelm Conrad Rontgen Res Ctr Complex Mat Syst, D-97074 Wurzburg - Germany
[3] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Paulo - Brazil
[4] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife - Scotland
Total Affiliations: 4
Document type: Journal article
Source: ACS NANO; v. 9, n. 6, p. 6271-6277, JUN 2015.
Web of Science Citations: 15

Sensor miniaturization together with broadening temperature sensing range are fundamental challenges in nanothermometry. By exploiting a large temperature-dependent screening effect observed in a resonant tunneling diode in sequence with a GaInNAs/GaAs quantum well, we present a low dimensional, wide range, and high sensitive nanothermometer. This sensor shows a large threshold voltage shift of the bistable switching of more than 4.5 V for a temperature raise from 4.5 to 295 K, with a linear voltage temperature response of 19.2 mV K-1, and a temperature uncertainty in the millikelvin (mK) range. Also, when we monitor the electroluminescence emission spectrum, an optical read-out control of the thermometer is provided. The combination of electrical and optical read-outs together with the sensor architecture excel the device as a thermometer with the capability of noninvasive temperature sensing, high local resolution, and sensitivity. (AU)

FAPESP's process: 12/51415-3 - Network for nano-optics and nano-electronics
Grantee:Victor Lopez Richard
Support type: Regular Research Grants
FAPESP's process: 13/24253-5 - Electronic and optical properties of quasi-two-dimensional nano-structutures and exfoliable systems
Grantee:Diana Mercedes Meneses Gustin
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 12/13052-6 - Transport properties and quantum computation in nanostructures
Grantee:Leonardo Kleber Castelano
Support type: Regular Research Grants