Study of vortex states and dynamics in mesoscopic superconducting samples with MFM
Polshyn H, Naibert T, Chua V, Budakian R. 2016. Study of vortex states and dynamics in mesoscopic superconducting samples with MFM. APS March Meeting 2016. APS: American Physical Society, Bulletin of the American Physical Society, vol. 61, E25.00007.
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[Published Version]
Conference Paper
| Published
| English
Author
Polshyn, HryhoriyISTA ;
Naibert, Tyler;
Chua, Victor;
Budakian, Raffi
Series Title
Bulletin of the American Physical Society
Abstract
Vortex states in superconducting (SC) structures, their dynamics and ways to manipulate them are topics of great interest. We report a new method of magnetic force microscopy (MFM) that allows the study of vortex states in mesoscopic SC samples. For the case of a SC ring, which is biased to a half-integer flux quantum, the flux modulation through the ring caused by the motion of the magnetic tip drives the ring between two consecutive fluxoid states. The corresponding current switching in the ring produces strong position-dependent forces on the cantilever. In the regime where the frequency of the thermally activated jumps between fluxoid states is close to the frequency of the cantilever, large changes in the cantilever frequency and dissipation are observed. This effect may be understood as a stochastic resonance (SR) process. These changes in the cantilever’s mechanical properties are used to “image” the barrier energies between fluxoid states. Additionally, SR imaging of the barrier energies are used to study the effect of the locally applied magnetic field from the MFM tip on the barrier heights. We report the results of measurements for Al rings. Further, the same imaging technique can be applied to more sophisticated SC structures such as arrays of Josephson junctions.
Publishing Year
Date Published
2016-03-01
Proceedings Title
APS March Meeting 2016
Volume
61
Issue
2
Article Number
E25.00007
Conference
APS: American Physical Society
Conference Location
Baltimore, MD, United States
Conference Date
2016-03-14 – 2016-03-18
ISSN
IST-REx-ID
Cite this
Polshyn H, Naibert T, Chua V, Budakian R. Study of vortex states and dynamics in mesoscopic superconducting samples with MFM. In: APS March Meeting 2016. Vol 61. American Physical Society; 2016.
Polshyn, H., Naibert, T., Chua, V., & Budakian, R. (2016). Study of vortex states and dynamics in mesoscopic superconducting samples with MFM. In APS March Meeting 2016 (Vol. 61). Baltimore, MD, United States: American Physical Society.
Polshyn, Hryhoriy, Tyler Naibert, Victor Chua, and Raffi Budakian. “Study of Vortex States and Dynamics in Mesoscopic Superconducting Samples with MFM.” In APS March Meeting 2016, Vol. 61. American Physical Society, 2016.
H. Polshyn, T. Naibert, V. Chua, and R. Budakian, “Study of vortex states and dynamics in mesoscopic superconducting samples with MFM,” in APS March Meeting 2016, Baltimore, MD, United States, 2016, vol. 61, no. 2.
Polshyn H, Naibert T, Chua V, Budakian R. 2016. Study of vortex states and dynamics in mesoscopic superconducting samples with MFM. APS March Meeting 2016. APS: American Physical Society, Bulletin of the American Physical Society, vol. 61, E25.00007.
Polshyn, Hryhoriy, et al. “Study of Vortex States and Dynamics in Mesoscopic Superconducting Samples with MFM.” APS March Meeting 2016, vol. 61, no. 2, E25.00007, American Physical Society, 2016.
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