title: Nanothermometer Based on Resonant Tunneling Diodes: From Cryogenic to Room Temperatures.
abstract: 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.
authors.affiliation: †Technische Physik, Physikalisches Institut, Universität Würzburg and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Pfenning
authors.affiliation: †Technische Physik, Physikalisches Institut, Universität Würzburg and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany.
authors.forename: Fabian
authors.initials: F
authors.lastname: Hartmann
authors.affiliation: ‡Departamento de Física, Universidade Federal de São Carlos, 13565-905 São Carlos, São Paulo, Brazil.
authors.forename: Mariama
authors.initials: M
authors.lastname: Rebello Sousa Dias
authors.affiliation: ‡Departamento de Física, Universidade Federal de São Carlos, 13565-905 São Carlos, São Paulo, Brazil.
authors.forename: Leonardo Kleber
authors.initials: LK
authors.lastname: Castelano
authors.affiliation: †Technische Physik, Physikalisches Institut, Universität Würzburg and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany.
authors.forename: Christoph
authors.initials: C
authors.lastname: Süßmeier
authors.affiliation: †Technische Physik, Physikalisches Institut, Universität Würzburg and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany.
authors.forename: Fabian
authors.initials: F
authors.lastname: Langer
authors.affiliation: †Technische Physik, Physikalisches Institut, Universität Würzburg and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany.|§SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS, United Kingdom.
authors.forename: Sven
authors.initials: S
authors.lastname: Höfling
authors.affiliation: †Technische Physik, Physikalisches Institut, Universität Würzburg and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Kamp
authors.affiliation: ‡Departamento de Física, Universidade Federal de São Carlos, 13565-905 São Carlos, São Paulo, Brazil.
authors.forename: Gilmar Eugenio
authors.initials: GE
authors.lastname: Marques
authors.affiliation: †Technische Physik, Physikalisches Institut, Universität Würzburg and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany.
authors.forename: Lukas
authors.initials: L
authors.lastname: Worschech
authors.affiliation: ‡Departamento de Física, Universidade Federal de São Carlos, 13565-905 São Carlos, São Paulo, Brazil.
authors.forename: Victor
authors.initials: V
authors.lastname: Lopez-Richard
keywords: resonant tunneling diode; thermometer