375 citations · 758 across the 9 of their papers we have counts for
9 papers
Optical Lineshape Models and the Generalized Einstein Relation between Absorption and Stimulated Emission
Aman K. Agrawal, Jisu Ryu, David M. Jonas
Recently, Ryu et al. generalized Einstein's three coefficients for absorption, stimulated emission, and spontaneous emission between two quantum levels to a set of four spectra bet…
Generalized Einstein Relations between Absorption and Emission Spectra at Thermodynamic Equilibrium
Jisu Ryu, Sarang Yeola, David M. Jonas
We present Einstein coefficient spectra and a detailed-balance derivation of generalized Einstein relations between them that is based on the connection between spontaneous and sti…
Spin-Wave Propagation in the Presence of Interfacial Dzyaloshinskii-Moriya Interaction
Jung-Hwan Moon, Soo-Man Seo, Kyung-Jin Lee +5
In ferromagnetic thin films, broken inversion symmetry and spin-orbit coupling give rise to interfacial Dzyaloshinskii-Moriya interactions. Analytic expressions for spin-wave prope…
Current-driven domain wall motion with spin Hall effect: Reduction of threshold current density
Jisu Ryu, Kyung-Jin Lee, Hyun-Woo Lee
We theoretically study the current-driven domain wall motion in the presence of both the spin Hall effect and an extrinsic pinning potential. The spin Hall effect mainly affects th…
Current-induced motion of a transverse magnetic domain wall in the presence of spin Hall effect
Soo-Man Seo, Kyoung-Whan Kim, Jisu Ryu +2
We theoretically study the current-induced dynamics of a transverse magnetic domain wall in bi-layer nanowires consisting of a ferromagnet on top of a nonmagnet having strong spin-…
Magnetization dynamics induced by in-plane currents in ultrathin magnetic nanostructures
Kyoung-Whan Kim, Soo-Man Seo, Jisu Ryu +2
Ultrathin magnetic systems have properties qualitatively different from their thicker counterparts, implying that different physics governs their properties. We demonstrate that va…
Magnetic domain wall motion in a nanowire: depinning and creep
Jisu Ryu, Sug-Bong Choe, Hyun-Woo Lee
The domain wall motion in a magnetic nanowire is examined theoretically in the regime where the domain wall driving force is weak and its competition against disorders is assisted…
Roles of adiabatic and nonadiabatic spin transfer torques on magnetic domain wall motion
Jae-Chul Lee, Kab-Jin Kim, Jisu Ryu +7
Electric current exerts torques-so-called spin transfer torques (STTs)-on magnetic domain walls (DWs), resulting in DW motion. At low current densities, the STTs should compete aga…
Universality between current- and field-driven domain wall dynamics in ferromagnetic nanowires
Jae-Chul Lee, Kab-Jin Kim, Jisu Ryu +7
Spin-polarized electric current exerts torque on local magnetic spins, resulting in magnetic domain-wall (DW) motion in ferromagnetic nanowires. Such current-driven DW motion opens…