SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging
Anahory Y, Naren HR, Lachman EO, Buhbut Sinai S, Uri A, Embon L, Yaakobi E, Myasoedov Y, Huber ME, Klajn R, Zeldov E. 2020. SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale. 12(5), 3174–3182.
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Journal Article
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Author
Anahory, Y.;
Naren, H. R.;
Lachman, E. O.;
Buhbut Sinai, S.;
Uri, A.;
Embon, L.;
Yaakobi, E.;
Myasoedov, Y.;
Huber, M. E.;
Klajn, RafalISTA;
Zeldov, E.
Abstract
Scanning nanoscale superconducting quantum interference devices (nanoSQUIDs) are of growing interest for highly sensitive quantitative imaging of magnetic, spintronic, and transport properties of low-dimensional systems. Utilizing specifically designed grooved quartz capillaries pulled into a sharp pipette, we have fabricated the smallest SQUID-on-tip (SOT) devices with effective diameters down to 39 nm. Integration of a resistive shunt in close proximity to the pipette apex combined with self-aligned deposition of In and Sn, has resulted in SOTs with a flux noise of 42 nΦ0 Hz−1/2, yielding a record low spin noise of 0.29 μB Hz−1/2. In addition, the new SOTs function at sub-Kelvin temperatures and in high magnetic fields of over 2.5 T. Integrating the SOTs into a scanning probe microscope allowed us to image the stray field of a single Fe3O4 nanocube at 300 mK. Our results show that the easy magnetization axis direction undergoes a transition from the 〈111〉 direction at room temperature to an in-plane orientation, which could be attributed to the Verwey phase transition in Fe3O4.
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Publishing Year
Date Published
2020-01-10
Journal Title
Nanoscale
Volume
12
Issue
5
Page
3174-3182
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eISSN
IST-REx-ID
Cite this
Anahory Y, Naren HR, Lachman EO, et al. SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale. 2020;12(5):3174-3182. doi:10.1039/c9nr08578e
Anahory, Y., Naren, H. R., Lachman, E. O., Buhbut Sinai, S., Uri, A., Embon, L., … Zeldov, E. (2020). SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale. Royal Society of Chemistry. https://doi.org/10.1039/c9nr08578e
Anahory, Y., H. R. Naren, E. O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon, E. Yaakobi, et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for High-Field and Ultra-Low Temperature Nanomagnetic Imaging.” Nanoscale. Royal Society of Chemistry, 2020. https://doi.org/10.1039/c9nr08578e.
Y. Anahory et al., “SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging,” Nanoscale, vol. 12, no. 5. Royal Society of Chemistry, pp. 3174–3182, 2020.
Anahory Y, Naren HR, Lachman EO, Buhbut Sinai S, Uri A, Embon L, Yaakobi E, Myasoedov Y, Huber ME, Klajn R, Zeldov E. 2020. SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale. 12(5), 3174–3182.
Anahory, Y., et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for High-Field and Ultra-Low Temperature Nanomagnetic Imaging.” Nanoscale, vol. 12, no. 5, Royal Society of Chemistry, 2020, pp. 3174–82, doi:10.1039/c9nr08578e.
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PMID: 31967152
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arXiv 2001.03342