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Thermoelectric transfer difference of thermal converters measured with a Josephson source

C.J. Burroughs, S.P. Benz, C.A. Hamilton, T.E. Harvey, J.R. Kinard, T.E. Lipe, H. Sasaki
1999 IEEE Transactions on Instrumentation and Measurement  
We have measured the thermoelectric transfer difference of two thermal voltage converters using a Josephson source and compared the results to similar measurements made with a conventional semiconductor  ...  A marginally significant difference is detected between measurements with the two different sources.  ...  Takahashi, JEMIC, Japan, for his valuable contribution in the development of the semiconductor FRDC source.  ... 
doi:10.1109/19.769583 fatcat:57jm5tufljgmzoat3vn2wceku4

Fast reversed DC measurements on thermal converters using a SINIS Josephson junction array

T. Funck, R. Behr, M. Klonz
2001 IEEE Transactions on Instrumentation and Measurement  
For the first time, results of Josephson measurements on two different PMJTCs excellently agree with the results obtained using a semiconductor FRDC source within 0.06 V/V up to 200 Hz.  ...  An array of 7492 SINIS Josephson junctions was used to generate fast reversed dc (FRDC) voltages of approximately 1.1 V for the study of thermoelectric effects in planar multijunction thermal converters  ...  Sasaki from ETL, Japan, for the very valuable discussions on the theory of FRDC sources using semiconductors as well as Josephson voltage standards.  ... 
doi:10.1109/19.918132 fatcat:6jjm4jqktffdfahtfgd6xzfd3e

1 volt DC programmable Josephson voltage standard

C.J. Burroughs, S.P. Benz, T.E. Harvey, C.A. Hamilton
1999 IEEE transactions on applied superconductivity  
The Josephson chip consists of a binary array sequence of 32 768 SNS Josephson junctions.  ...  The chip has been integrated into a completely automated system that is finding application in mechanical / electrical watt-balance experiments, evaluation of thermal voltage converters, electron-counting  ...  The programmable JVS can also provide both the dc and ac inputs for the fast reversed dc (FRDC) method of measuring the thermoelectric transfer difference of thermal voltage converters (TVC).  ... 
doi:10.1109/77.783938 fatcat:foopxrqjm5aztp5rj5vr67ynti

Bipolar Thermoelectric Josephson Engine [article]

Gaia Germanese, Federico Paolucci, Giampiero Marchegiani, Alessandro Braggio, Francesco Giazotto
2022 arXiv   pre-print
Moreover, by integrating our junctions into a Josephson interferometer, we realize a bipolar thermoelectric Josephson engine (BTJE) [18] with phase-coherent thermopower control [19].  ...  Here, we experimentally demonstrate that a superconducting tunnel junction can develop a very large bipolar thermoelectric effect in the presence of a nonlinear thermal gradient thanks to spontaneous PH  ...  Bipolar thermoelectric Josephson engine. a Scheme of the bipolar thermoelectric Josephson engine (BTJE): two different superconductors S1 and S2 (with zero-temperature energy gaps ∆0,1 > ∆0,2) are tunnel-coupled  ... 
arXiv:2202.02121v2 fatcat:f234vp64cvb73oyo5na3wobcbe

Development of thin-film multi-junction thermal converters
交流電圧標準を導く薄膜型サーマルコンバータの開発

Hiroyuki FUJIKI, Yasutaka AMAGAI, Hitoshi SASAKI
2015 Synthesiology English edition  
With respect to the provision of AC-DC transfer standards, the AC-DC transfer differences of a thermal converter are calibrated, which correspond to the conversion error from a DC voltage to an AC voltage  ...  The method that can derive an AC voltage standard with the highest precision is the AC-DC transfer method, [1] in which a thermal AC-DC converter (thermal converter) is used to compare an AC voltage with  ...  The AC-DC transfer difference constitutes a major source of uncertainty as it depends on the measurement circuit of the thermocouple.  ... 
doi:10.5571/syntheng.8.3_113 fatcat:4rabntqvxvdohn52skiqvbolfu

Index by Authors

2020 2020 Conference on Precision Electromagnetic Measurements (CPEM)  
Electrical Standards -Current Analysis of Frequency-Dependent Component of AC -DC Transfer Difference of a Modified Calorimetric Thermal Converter Conventional Electrical Standards -Voltage Ratio and  ...  RF and Microwave -Antennas, Fields, and Materials Measurement of Thermoelectric Power Sensors Using a Thermal Voltage Converter of 1 kHz to 1 MHz RF and Microwave -Power and Noise Parks, Harold  ... 
doi:10.1109/cpem49742.2020.9191903 fatcat:lbfsuf6uvzbgjpywo2lkbobx5i

Ferromagnetic-Insulator-Based Superconducting Junctions as Sensitive Electron Thermometers

F. Giazotto, P. Solinas, A. Braggio, F. S. Bergeret
2015 Physical Review Applied  
We investigated the transfer functions and the intrinsic noise performance for different measurement configurations.  ...  We also discuss a temperature-to-frequency converter where the obtained thermo-voltage developed over a Josephson junction operated in the dissipative regime is converted into a high-frequency signal.  ...  A temperature difference localized between the N and S sides of the TE induces a thermoelectric signal [4] .  ... 
doi:10.1103/physrevapplied.4.044016 fatcat:cvjb6nxnqzh5vouydlgikppwlu

Phase-coherent caloritronics with ordinary and topological Josephson junctions [article]

Sun-Yong Hwang, Björn Sothmann
2019 arXiv   pre-print
We start from the simple case of a short, one-dimensional superconductor-normal metal-superconductor (S-N-S) Josephson junction and derive the phase-dependent thermal conductance within the Bogoliubov-de  ...  We provide a brief and comprehensive overview over recent developments in the field of phase-coherent caloritronics in ordinary and topological Josephson junctions.  ...  The key idea of the experiment is to heat the source electrode to T source and measure the temperature of the drain electrode T drain as the phase difference across the Josephson junctions is modulated  ... 
arXiv:1905.09262v1 fatcat:ltmhu5i6yzabvgnad3j3n7gvxm

ac-Josephson-Effect Determination ofeh: A Standard of Electrochemical Potential Based on Macroscopic Quantum Phase Coherence in Superconductors

T. F. Finnegan, A. Denenstein, D. N. Langenberg
1971 Physical Review B  
used with a low resistance source such as a Josephson junction.  ...  (k) The last source of uncertainty considered here (associated with the SPC) is variations in the thermal emfs.  ... 
doi:10.1103/physrevb.4.1487 fatcat:lxpg6fq365hrneoj5m6s72bj3a

High accuracy AC current sources calibration by single junction thermal converters at INM

Carlos Fernando Hernández Prada, Mauricio Sáchica Avellaneda, Alexander Martínez lópez
2021 Dyna  
We describe the implementation at INM of AC-DC current transfer standards by single junction thermal converters (SJTC) to improve the accuracy of AC measurements and give traceability to the International  ...  Expanded uncertainties between 68 μA/A and 2.6 mA/A were obtained for the calibration of high accuracy calibrators and transconductance amplifiers for currents from 5 mA to 20 A (40 Hz to 5 kHz).  ...  However, SJTC are affected by thermoelectric effects such as Peltier and Thomson heating [9] , that causes a deviation from the ideal behavior known as the AC-DC transfer difference of the thermal converter  ... 
doi:10.15446/dyna.v88n216.86244 fatcat:3wid5v3hufbcjexvg2y3ywck5m

INTERLABORATORY COMPARISON IN CONTEXT OF INAPPROPRIATE RESULTS OF VOLTAGE THERMAL CONVERTER CALIBRATION

Oleh Velychko
2018 Journal of Electrical Engineering and Information Technologies  
A b s t r a c t: The paper is devoted to the analysis of calibration results of thermoelectric voltage converter obtained by five participants of interlaboratory comparisons which ended in 2017.  ...  The measurement model for a non-standardized measurement set-up is proposed, taking into account the drift of input and output signals.  ...  V3 are required to measure the output signal of single junction thermal converter (SJTC) and the Fluke 792A ac/dc transfer standard.  ... 
doi:10.51466/jeeit1831-205v fatcat:rfbhegutmve3vlwnj4wmrvqmgm

The ampere and electrical standards

R.E. Elmquist, M.E. Cage, Y.H. Tang, A.M. Jeffery, J.R. Kinard, R.F. Dziuba, N.M. Oldham, E.R. Williams
2001 Journal of Research of the National Institute of Standards and Technology  
Four projects covering a number of voltage and impedance measurements are described in detail.  ...  The early work of the Electricity Division staff included the development of precision standards, such as Rosa and Thomas standard resistors and the ac-dc thermal converter.  ...  Cryogenic Thermal Converter At audio frequency, thermal and thermoelectric effects ultimately limit the measurement uncertainty in conventional room-temperature thermal converters.  ... 
doi:10.6028/jres.106.005 pmid:27500018 pmcid:PMC4865284 fatcat:evgl4zquo5eeljerahi2jws6oa

On-demand thermoelectric generation of equal-spin Cooper pairs

Felix Keidel, Sun-Yong Hwang, Björn Trauzettel, Björn Sothmann, Pablo Burset
2020 Physical Review Research  
We consider a S-F-S junction, connecting two leads at different temperatures, on top of the helical edge of a two-dimensional topological insulator.  ...  Heat and charge currents generated by the thermal bias are caused by different transport processes, where electron cotunneling is responsible for the heat flow to the cold lead and, strikingly, only crossed  ...  As a result of the carrier-selective heat and charge transfer in this setup, thermal noise is caused by normal scattering processes that do not experience interference and S RR increases steadily with  ... 
doi:10.1103/physrevresearch.2.022019 fatcat:2n577ek5irhwzgdskhjv4usg5y

Thermoelectric transport through a quantum dot coupled to a normal metal and BCS superconductor [article]

Mariusz Krawiec
2008 arXiv   pre-print
I will focus on conductance, thermal conductance, thermopower and related quantities like thermoelectric figure of merit which is a direct measure of the usefulness of the system for applications and Wiedemann-Franz  ...  I discuss thermoelectric properties of a quantum dot coupled to one normal and one superconducting lead in the presence of Kondo effect and Andreev scattering.  ...  Acknowledgments This work has been supported by the Grant No N N202 1468 33 of the Polish Ministry of Education and Science.  ... 
arXiv:0803.0208v1 fatcat:vezspqu5i5gtvahi5zkiayib4a

Nonlocal thermoelectric engines in hybrid topological Josephson junctions [article]

Gianmichele Blasi, Fabio Taddei, Liliana Arrachea, Matteo Carrega, Alessandro Braggio
2021 arXiv   pre-print
The thermoelectric performance of a topological Josephson nonlocal heat engine is thoroughly investigated.  ...  In this configuration, we investigate how the flux bias and the phase bias trigger the nonlocal thermoelectric effects under the application of a thermal difference between the superconducting terminals  ...  We conclude this section by observing that the local thermoelectric effect in the probe, which emerges with gap asymmetry, represents one of the main source of disturbance to the measurement of the nonlocal  ... 
arXiv:2103.14394v1 fatcat:dkcehiycbbg45dwiy3oljlxyle
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