Controllable nonreciprocal optical response and handedness-switching in magnetized spin orbit coupled graphene
arXiv:2201.01779 · doi:10.1103/PhysRevB.105.045409
Abstract
Starting from a low-energy effective Hamiltonian model, we theoretically calculate the dynamical optical conductivity and permittivity tensor of a magnetized graphene layer with Rashba spin orbit coupling (SOC). Our results reveal a transverse Hall conductivity correlated with the usual nonreciprocal longitudinal conductivity. Further analysis illustrates that for intermediate magnetization strengths, the relative magnitudes of the magnetization and SOC can be identified experimentally by two well-separated peaks in the dynamical optical response (both the longitudinal and transverse components) as a function of photon frequency. Moreover, the frequency dependent permittivity tensor is obtained for a wide range of chemical potentials and magnetization strengths. Employing experimentally realistic parameter values, we calculate the circular dichroism of a representative device consisting of magnetized spin orbit coupled graphene and a dielectric insulator layer, backed by a metallic plate. The results reveal that this device has different relative absorptivities for right-handed and left-handed circularly polarized electromagnetic waves. It is found that the magnetized spin orbit coupled graphene supports strong handedness-switchings, effectively controlled by varying the chemical potential and magnetization strength with respect to the SOC strength.
arXiv comment12 pages, 6 figures
References in corpus (31)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Quantum Spin Hall Effect in Graphene
- Phosphorene: A New 2D Material with High Carrier Mobility
- The structure of suspended graphene sheets
- Electronic transport in two dimensional graphene
- Photovoltaic Hall effect in graphene
- Andreev reflection and Klein tunneling in graphene
- Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
- Light-induced anomalous Hall effect in graphene
- Quantum Anomalous Hall Effect in Graphene from Rashba and Exchange Effects
- Electronic and optical properties of strained graphene and other strained 2D materials: a review
- Proximity-induced ferromagnetism in graphene revealed by anomalous Hall effect
- Spin-Orbit Proximity Effect in Graphene
- Rashba effect in the graphene/Ni(111) system
- Strong interface-induced spin-orbit coupling in graphene on WS2
- Graphene for spintronics: giant Rashba splitting due to hybridization with Au
- Magnetic Insulator-Induced Proximity Effects in Graphene: Spin Filtering and Exchange Splitting Gaps
- Graphene with Structure-Induced Spin-Orbit Coupling: Spin-Polarized States, Spin Zero Modes, and Quantum Hall Effect
- Quantum oscillations of the critical current and high-field superconducting proximity in ballistic graphene
- Perfect Absorption in Ultrathin Epsilon-Near-Zero Metamaterials Induced by Fast-Wave Non-Radiative Modes
- Strong Spin-Orbit Interaction Induced in Graphene by Monolayer WS
- Gate-tunable spin-charge conversion and a role of spin-orbit interaction in graphene
- Epsilon-Near-Zero Response and Tunable Perfect Absorption in Weyl Semimetals
- Giant optical activity and Kerr effect in type-I and type-II Weyl semimetals
- Nonlocal Andreev Entanglements and Triplet Correlations in Graphene with Spin Orbit Coupling
- Spin-controlled superconductivity and tunable triplet correlations in graphene nanostructures
- Tunable Anomalous Andreev Reflection and Triplet Pairings in Spin Orbit Coupled Graphene
- Near-perfect absorption in epsilon-near-zero structures with hyperbolic dispersion
- Waveguide Modes in Weyl Semimetals with Tilted Dirac Cones
- Extreme anisotropy and gyrotropy of surface polaritons in Weyl semimetals