862 citations · 1.8k across the 14 of their papers we have counts for
14 papers
Self-training superconducting neuromorphic circuits using reinforcement learning rules
M. L. Schneider, E. M. Jué, M. R. Pufall +2
Reinforcement learning algorithms are used in a wide range of applications, from gaming and robotics to autonomous vehicles. In this paper we describe a set of reinforcement learni…
Mutual control of stochastic switching for two electrically coupled superparamagnetic tunnel junctions
Philippe Talatchian, Matthew W. Daniels, Advait Madhavan +5
Superparamagnetic tunnel junctions (SMTJs) are promising sources for the randomness required by some compact and energy-efficient computing schemes. Coupling SMTJs gives rise to co…
Strong coupling of Fe-Co alloy with ultralow damping to superconducting co-planar waveguide resonators
I. W. Haygood, M. R. Pufall, E. R. J. Edwards +2
We report on the strong coupling between a metallic ferromagnetic Fe75Co25 thin film patterned element and a range of superconducting Nb half-wavelength co-planar waveguide (CPW) r…
Spin-transfer torque switching in nanopillar superconducting-magnetic hybrid Josephson junctions
Burm Baek, William H. Rippard, Matthew R. Pufall +4
The combination of superconducting and magnetic materials to create novel superconducting devices has been motivated by the discovery of Josephson critical current (Ics) oscillatio…
Thermal Relaxation Rates of Magnetic Nanoparticles in the Presence of Magnetic Fields and Spin-Transfer Effects
William Rippard, Ranko Heindl, Matthew Pufall +2
We have measured the relaxation time of a thermally unstable ferromagnetic nanoparticle incorporated into a magnetic tunnel junction (MTJ) as a function of applied magnetic field,…
Non-white frequency noise in spin torque oscillators and its effect on spectral linewidth
Mark W. Keller, M. R. Pufall, W. H. Rippard +1
We measure the power spectral density of frequency fluctuations in nanocontact spin torque oscillators over time scales up to 50 ms. We use a mixer to convert oscillator signals ra…