Abstract: Stochastic resonance, where noise synchronizes a system’s response to an external drive, is a phenomenon that occurs in a wide variety of noisy systems ranging from the dynamics of neurons to the periodicity of ice ages. This talk will present theory and experiments on a quantum system that exhibits stochastic resonance — the quantum tunneling of the magnetization of a single Fe atom measured using spin-polarized scanning tunneling microscopy.  Stochastic resonance is shown deep in the quantum regime, where fluctuations are driven by tunneling of the magnetization, as well as in a semi-classical crossover region where thermal excitations set in. Combining theory and experiment enables one to probe the dynamics on time scales shorter than can be resolved experimentally.

You are invited to a Zoom webinar.

When: Jul 22, 2021 12:00 PM Canberra, Melbourne, Sydney

Topic: AIP Theoretical Physics Seminar: Susan Coppersmith, Quantum stochastic resonance of individual Fe atoms

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https://anu.zoom.us/webinar/register/WN_fHcRoq9tR3aDc6H2UVvdLA

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    H.323: zoom.aarnet.edu.au

    Meeting ID: 889 0480 9837

    Passcode: 143072906

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    Passcode: 143072906