title: Electric-field-induced modification of the magnon energy, exchange interaction, and curie temperature of transition-metal thin films.
abstract: The electric-field-induced modification in the Curie temperature of prototypical transition-metal thin films with the perpendicular magnetic easy axis, a freestanding Fe(001) monolayer and a Co monolayer on Pt(111), is investigated by first-principles calculations of spin-spiral structures in an external electric field (E field). An applied E field is found to modify the magnon (spin-spiral formation) energy; the change arises from the E-field-induced screening charge density in the spin-spiral states due to p-d hybridizations. The Heisenberg exchange parameters obtained from the magnon energy suggest an E-field-induced modification of the Curie temperature, which is demonstrated via Monte Carlo simulations that take the magnetocrystalline anisotropy into account.
authors: Department of Physics Engineering, Mie University, Tsu, Mie 514-8507, Japan.
authors: M
authors: M
authors: Oba
authors: Department of Physics Engineering, Mie University, Tsu, Mie 514-8507, Japan.
authors: K
authors: K
authors: Nakamura
authors: Department of Physics Engineering, Mie University, Tsu, Mie 514-8507, Japan.
authors: T
authors: T
authors: Akiyama
authors: Department of Physics Engineering, Mie University, Tsu, Mie 514-8507, Japan.
authors: T
authors: T
authors: Ito
authors: Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA.
authors: M
authors: M
authors: Weinert
authors: Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA.
authors: A J
authors: AJ
authors: Freeman