Blar i NTNU Open på forfatter "Cheng, Ran"
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Subterahertz spin pumping from an insulating antiferromagnet
Vaidya, Priyanka; Morley, Sophie A.; van Tol, Johan; Liu, Yan; Cheng, Ran; Brataas, Arne; Lederman, David; del Barco, Enrique (Peer reviewed; Journal article, 2020)Spin-transfer torque and spin Hall effects combined with their reciprocal phenomena, spin pumping and inverse spin Hall effects (ISHEs), enable the reading and control of magnetic moments in spintronics. The direct observation ... -
Terahertz Antiferromagnetic Spin Hall Nano-Oscillator
Cheng, Ran; Xiao, Di; Brataas, Arne (Journal article; Peer reviewed, 2016)We consider the current-induced dynamics of insulating antiferromagnets in a spin Hall geometry. Sufficiently large in-plane currents perpendicular to the Néel order trigger spontaneous oscillations at frequencies between ...