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

Abstract

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.

14 pages, 6 figures

References in corpus (3)

• The Fano resonance for Anderson impurity systems
• Spin inversion devices with Fano anti-resonances
• Spin-dependent diffraction at ferromagnetic/spin spiral interface

Cited by in corpus (5)

• Resonance in the nonadiabatic quantum pumping of the time-dependent Josephson junction
• Fano resonance via bonding and antibonding states in nonadiabatically-pumped double-quantum-well systems
• Quantum pumping in helimagnet heterostructures
• Fano resonances in tilted Weyl semimetals in an oscillating quantum well
• Conductance and shot noise in the helimagnet tunnel junction