1207.0490 (Rui Zhu)

Spin-dependent Fano resonance induced by conducting chiral helimagnet
contained in a quasi-one-dimensional electron waveguide    [PDF]

Rui Zhu

Fano resonance appears for conduction through an electron waveguide containing donor impurities. In this work, we consider the thin-film conducting chiral helimagnet (CCH) as the donor impurity in a one-dimensional waveguide model. Due to the spin spiral coupling, interference between the direct and intersubband transmission channels gives rise to spin-dependent Fano resonance effect. The spin-dependent Fano resonance is sensitively dependent on the helicity of the spiral. By tuning the CCH potential well depth and the incident energy, this provides a potential way to detect the spin structure in the CCH.

View original: http://arxiv.org/abs/1207.0490