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Quantitative measurements of the thermal resistance of Andreev interferometers | | Z. Jiang
; V. Chandrasekhar
; | | Date: |
20 Dec 2004 | | Journal: | PRB (Rapid) 72, 020502(R) (2005) | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | Using a local thermometry technique, we have been able to quantitatively measure the thermal resistance $R^T$ of diffusive Andreev interferometers. We find that $R^T$ is strongly enhanced from its normal state value at low temperatures, and behaves non-linearly as a function of the thermal current through the sample. We also find that the $R^T$ oscillates as a function of magnetic flux with a fundamental period corresponding to one flux quantum $Phi_0=h/2e$, demonstrating the phase coherent nature of thermal transport in these devices. The magnitude of $R^T$ is larger than predicted by recent numerical simulations. | | Source: | arXiv, cond-mat/0501478 | | Services: | Forum | Review | PDF | Favorites | |
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