title: Edge-state-dependent tunneling of dipole-exchange spin waves in submicrometer magnetic strips with an air gap.
abstract: We have investigated the tunneling of dipole-exchange spin waves across an air gap in submicrometer-sized permalloy magnetic strips by means of micromagnetic simulations. The magnetizations beside the gap could form three distinct end-domain states with various strengths of dipolar coupling. Spin-wave tunneling through the gap at individual end-domain states is studied. It is found that the tunneling behavior is strongly dependent on these domain states. Nonmonotonic decay of transmission of spin waves with the increase of the gap width is observed. The underlying mechanism for these behaviors is proposed. The tunneling characteristics of the dipole-exchange spin waves differ essentially from those of the magnetostatic ones reported previously.
authors.affiliation: College of Physics and Electronic Information Engineering, Wenzhou University, Wenzhou 325035, People's Republic of China. xxjun@wzu.edu.cn
authors.forename: X J
authors.initials: XJ
authors.lastname: Xing
authors.forename: D
authors.initials: D
authors.lastname: Zhang
authors.forename: S W
authors.initials: SW
authors.lastname: Li
mesh_terms: D000388:Air; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008280:Magnetics / Q000295:instrumentation*; D008962:Models, Theoretical; D036103:Nanotechnology / Q000295:instrumentation*; D012666:Semiconductors