Thumbnail
Access Restriction
Open

Author Liu, Yizhou ♦ Yin, Gen ♦ Lake, Roger K. ♦ Zang, Jiadong ♦ Shi, Jing
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ AMPLITUDES ♦ ANNIHILATION ♦ CRITICAL FREQUENCY ♦ GEOMETRY ♦ HEAT ♦ SKYRME POTENTIAL ♦ SOLITONS ♦ SPIN WAVES
Abstract Single skyrmion creation and annihilation by spin waves in a crossbar geometry are theoretically analyzed. A critical spin-wave frequency is required both for the creation and the annihilation of a skyrmion. The minimum frequencies for creation and annihilation are similar, but the optimum frequency for creation is below the critical frequency for skyrmion annihilation. If a skyrmion already exists in the cross bar region, a spin wave below the critical frequency causes the skyrmion to circulate within the central region. A heat assisted creation process reduces the spin-wave frequency and amplitude required for creating a skyrmion. The effective field resulting from the Dzyaloshinskii-Moriya interaction and the emergent field of the skyrmion acting on the spin wave drive the creation and annihilation processes.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-10-12
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 15


Open content in new tab

   Open content in new tab