2009/06/13 by Y. -T. Cui, Yong‐Tao Cui, G. Finocchio +7 · 72 citations
Engineering · Physics and Astronomy · #Advanced Memory and Neural Computing #Amplitude #Coherence (philosophical gambling strategy) #Condensed matter physics #Excitation #Ferromagnetism #Magnetic Field Sensors Techniques #Magnetic field #Magnetic properties of thin films #Magnetization #Magnetization dynamics #Non-equilibrium thermodynamics #Optics #Physics #Precession #Quantum mechanics #Spin (aerodynamics) #Torque #Tunnel magnetoresistance #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.104.097201
published in Physical Review Letters 104(9), 097201 (American Physical Society) · 13 pages, 4 figures
arxiv created 2009/06/13 · openalex publication_date 2010/03/01 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report single-shot measurements of resistance versus time for thermally assisted spin-torque switching in magnetic tunnel junctions. We achieve the sensitivity to resolve the magnetic dynamics prior to as well as during switching, yielding detailed views of switching modes and variations between events. Analyses of individual traces allow measurements of coherence times, nonequilibrium excitation spectra, and variations in magnetization precession amplitude. We find that with a small in-plane hard-axis magnetic field the switching dynamics are more spatially coherent than for a zero field.