Self-aligned Nanoscale SQUID on a Tip

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Self-aligned Nanoscale SQUID on a Tip

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Title: Self-aligned Nanoscale SQUID on a Tip
Author: Finkler, Amit; Segev, Yehonathan; Myasoedov, Yuri; Rappaport, Michael; Vasyukov, Denis; Zeldov, Eli; Martin, Jens; Huber, Martin; Yacoby, Amir; Ne'eman, Lior

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Citation: Finkler, Amit, Yehonathan Segev, Yuri Myasoedov, Michael L. Rappaport, Lior Ne'eman, Denis Vasyukov, Eli Zeldov, Martin Huber, Jens Martin, and Amir Yacoby. 2010. Self-aligned nanoscale SQUID on a tip. Nano Letters 10(3): 1046–1049.
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Abstract: A nanometer-sized superconducting quantum interference device (nanoSQUID) is fabricated on the apex of a sharp quartz tip and integrated into a scanning SQUID microscope. A simple self-aligned fabrication method results in nanoSQUIDs with diameters down to 100 nm with no lithographic processing. An aluminum nanoSQUID with an effective area of \(0.034 \mu m^2\) displays flux sensitivity of \(1.8 \times 10^{−6} \phi_0/Hz^{\frac {1}{2}}\) and operates in fields as high as \(0.6 T\). With projected spin sensitivity of \(65 \mu_B/Hz^{\frac {1}{2}}\) and high bandwidth, the SQUID on a tip is a highly promising probe for nanoscale magnetic imaging and spectroscopy.
Published Version: doi://10.1021/nl100009r
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