6533b82cfe1ef96bd128e981
RESEARCH PRODUCT
Determination of thermometric parameters from the conductance curve of the normal metal based tunnel junction array
J.p PekolaK.p Hirvisubject
Polynomial regressionMathematical optimizationPolynomialNonlinear systemHardware and ArchitectureTunnel junctionOrders of magnitude (temperature)Mathematical analysisGeneral Physics and AstronomyConductanceBiasingMathematicsdescription
Abstract We propose a method for extracting thermometric parameters from the measured conductance curve, against bias voltage, of a tunnel junction array. Instead of fitting the whole theoretical conductance curve to the experiment, we perform several polynomial fits to selected bias regions. The advantages of this method is that polynomial fits are linear in their fitting parameters whereas the theoretical form for the conductance is inherently nonlinear. This way the proposed method is about three orders of magnitude faster than the nonlinear fit. Optimizing this polynomial fit procedure is discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-10-01 | Computer Physics Communications |