title: A reconfigurable waveguide for energy-efficient transmission and local manipulation of information in a nanomagnetic device.
abstract: Spin-wave-based devices promise to usher in an era of low-power computing where information is carried by the precession of the electrons' spin instead of dissipative translation of their charge. This potential is, however, undermined by the need for a bias magnetic field, which must remain powered on to maintain an anisotropic device characteristic. Here, we propose a reconfigurable waveguide design that can transmit and locally manipulate spin waves without the need for any external bias field once initialized. We experimentally demonstrate the transmission of spin waves in straight as well as curved waveguides without a bias field, which has been elusive so far. Furthermore, we experimentally show a binary gating of the spin-wave signal by controlled switching of the magnetization, locally, in the waveguide. The results have potential implications in high-density integration and energy-efficient operation of nanomagnetic devices at room temperature.
authors.affiliation: Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore.
authors.forename: Arabinda
authors.initials: A
authors.lastname: Haldar
authors.affiliation: Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore.
authors.forename: Dheeraj
authors.initials: D
authors.lastname: Kumar
authors.affiliation: Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore.
authors.forename: Adekunle Olusola
authors.initials: AO
authors.lastname: Adeyeye
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