Role of time reversal symmetry and tilting in circular photogalvanic responses

Abstract

We study the role of time reversal symmetry (TRS) in the circular photogalvanic (CPG) responses considering chiral Weyl semimetal (WSM) while a quantized CPG response is guaranteed by broken of both inversion symmetry (IS) and mirror symmetries. The TRS broken WSM yields one left and one right chiral Weyl nodes (WNs) while there are two left and right chiral WNs for TRS invariant WSM. We show that these features can potentially cause the quantization of CPG response at higher values compared to the topological charge of the underlying WSM. This is further supported by the fact that Berry curvature and velocity behave differently whether the system preserves or breaks the TRS. We find the CPG responses for TRS invariant type-II WSM to be quantized at two and four times the topological charge of the activated WNs while the chemical potential are respectively chosen in the vicinity of energies associated with left and right chiral WNs. By contrast, irrespective of the above choice of the chemical potential, the quantization in CPG response is directly given by the topological charge of the activated WNs for TRS broken case. Interestingly, we notice non-quantized peak in CPG response when energies of WNs associated with opposite chiralities are close to each other as it is the case for TRS invariant type-I WSM considered here. Moreover, we show that the tilt can significantly modify the CPG response as velocity in the tilt direction changes which enters into the CPG tensor through the Fermi distribution function. Given these exciting outcomes, the second order CPG response emerges as a useful indicator to characterize the system under consideration. Furthermore, we investigate the momentum resolved structure of CPG response to relate with the final results and strengthen our analysis from the perspective of the lattice models.

11 pages, 5 figures

References in corpus (9)

• Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase
• Topological response in Weyl semimetals and the chiral anomaly
• Photocurrents in Weyl semimetals
• Giant topological longitudinal circular photo-galvanic effect in the chiral multifold semimetal CoSi
• Photogalvanic effect in Weyl semimetals
• Observation of giant spin-split Fermi-arc with maximal Chern number in the chiral topological semimetal PtGa
• Probing quantum criticality using nonlinear Hall effect in a metallic Dirac system
• An ab-initio study of circular photogalvanic effect in chiral multifold semimetals
• Connecting the dots: Time-reversal symmetric Weyl Semimetals with tunable Fermi arcs

Cited by in corpus (24)

• Light control with Weyl semimetals
• Nonlinear Hall effect with time-reversal symmetry: Theory and material realizations
• Nonlinear magnetoconductivity in Weyl and multi-Weyl semimetal in quantizing magnetic field
• Electronic structure and unconventional non-linear response in double Weyl semimetal SrSi${}_2$
• Third-order Hall effect in the surface states of a topological insulator
• Understanding the three-dimensional quantum Hall effect in generic multi-Weyl semimetals
• Topological Magnus responses in two and three dimensional systems
• Effect of chirality imbalance on Hall transport of PrRhC${}_2$
• Nonlinear photoconductivities and quantum geometry of chiral multifold fermions
• Photocurrent generation in solids via linearly polarized laser
• How massless are Weyl fermions in Weyl semimetals?
• Theoretical investigations on Kerr and Faraday rotations in topological multi-Weyl Semimetals
• Nonlinear magnetotransport in Weyl semimetal
• Tailoring Photocurrent in Weyl Semimetals via Intense Laser Irradiation
• Distinct signatures of particle-hole symmetry breaking in transport coefficients for generic multi-Weyl semimetals
• Photogalvanic response in multi-Weyl semimetals
• Topological magnon in exchange frustration driven incommensurate spin spiral of a kagome lattice YMn${}_6$Sn${}_6$
• Distinct quasiparticle interference patterns for surface impurity scattering on various Weyl semimetals
• Large circular photogalvanic effect in the noncentrosymmetric magnetic Weyl semimetal CeAlSi
• Sb2Se3 and SbBiSe3 Surface Capping and Biaxial Strain Co-Engineering for Tuning the Surface Electronic Properties of Bi2Se3 Nanosheet- A Density Functional Theory based Investigation
• Energy magnetization and transport in systems with a non-zero Berry curvature in a magnetic field
• Fano resonances in tilted Weyl semimetals in an oscillating quantum well
• Topological Optical Pseudospin Injection Beyond Weyl Semimetals
• The orbital-driven topological phase transition and planar Hall responses in ternary tellurides Weyl semi-metals