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Supraconductivité |  |
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Supraconductivité | |
| HAL : hal-00533111, version 1 |
| Fiche détaillée |  Récupérer au format |
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| Applied Superconductivity Conférence, Washington : États-Unis (2010) |
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| Superconducting nanowire single electron detector |
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| Michael Rosticher 1François-René Ladan 1 |
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| (01/08/2010) |
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| WE REPORT THE DETECTION OF SINGLE ELECTRONS USING A 6 NM-THICK, 100 NM-WIDE, NB0.7TI0.3N SUPERCONDUCTING STRIP DEPOSITED ON A SIOX/SI SUBSTRATE. WHEN BIASED SLIGHTLY BELOW THE CRITICAL CURRENT, A MEANDER-SHAPED DEVICE, NOT ONLY DETECTS SINGLE PHOTONS, BUT ALSO COUNTS THE SINGLE KEV ELECTRONS ISSUED FROM A SCANNING ELECTRON MICROSCOPE (SEM) WITH AN EFFICIENCY APPROACHING UNITY. THE RESPONSE TIME IS SHORT ENOUGH TO DISCRIMINATE THE INCIDENT ELECTRONS FROM THOSE BACKSCATTERED FROM THE UNDERLYING MATERIAL. IT IS THEREFORE POSSIBLE TO MAP THE ELECTRON DETECTIVITY AS WELL AS THE PHOTON DETECTIVITY ON THE SAME DEVICE. A CLEAR CORRELATION BETWEEN THE TWO MEASUREMENTS IS OBSERVED, WITH A SUPERIOR SPATIAL RESOLUTION THOUGH (AROUND 100 NM) FOR THE SEM MAPPING. IT ILLUSTRATES THE POTENTIAL USE OF THIS SINGLE ELECTRON MAPPING BY THE SEM METHOD TO CHARACTERIZE THE DETECTION HOMOGENEITY OF SSPDS |
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| 1 : | Laboratoire Pierre Aigrain (LPA) |
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CNRS : UMR8551 – Université Pierre et Marie Curie (UPMC) - Paris VI – Université Paris VII - Paris Diderot – Ecole normale supérieure de Paris - ENS Paris |
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| 2 : | Kavli Institute of Nanosciences (KI-NANO) |
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Delft University of Technology |
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| 3 : | Laboratoire Kastler Brossel (LKB (Lhomond)) |
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CNRS : UMR8552 – Université Pierre et Marie Curie (UPMC) - Paris VI – Ecole normale supérieure de Paris - ENS Paris |
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| 4 : | Institute for Quantum Computing |
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University of Waterloo |
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| 5 : | Institut Néel (NEEL) |
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CNRS : UPR2940 – Université Joseph Fourier - Grenoble I – Institut National Polytechnique de Grenoble (INPG) |
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| Domaine | : | Physique/Matière Condensée/Supraconductivité |
| hal-00533111, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00533111 | |
| oai:hal.archives-ouvertes.fr:hal-00533111 | |
| Contributeur : Michael Rosticher | |
| Soumis le : Vendredi 5 Novembre 2010, 11:22:06 | |
| Dernière modification le : Vendredi 9 Mars 2012, 10:59:48 | |
