Strong bulk photovoltaic effect in chiral crystal in the visible spectrum

Abstract

Structurally chiral materials hosting multifold fermions with large topological number have attracted considerable attention because of their naturally long surface Fermi arcs and bulk quantized circular photogalvanic effect (CPGE). Multifold fermions only appear in metallic states, and therefore, most studies so far have only focused on the semimetals in compounds with chiral crystal structures. In this work, we show that the structurally chiral topological trivial insulators are also exotic states, which is interesting from the application point of view, owing to their natural advantage to host a large bulk photovoltaic effect in the visible wavelength region. In the last decades, the shift current in the visible wavelength region was limited to be 10 uA/V2 . By scanning the insulators with chiral structure, we found a class of compounds with photoconductivity ranging from 20 to 80 uA/V2 , which is approximately one order of magnitude larger than that reported in other real materials. This work illustrates that the compounds with chiral structure can host both quantum CPGE and a strong shift current in the second order optical response. Moreover, this work offers a good platform for the study of the shift current and its future application by putting the focus on insulator with chiral lattices, so far overlooked in photovoltaic technologies.

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• First-Principles Calculation of the Bulk Photovoltaic Effect in the Polar Compounds LiAsS${}_{\text{2}}$, LiAsSe${}_{\text{2}}$, and NaAsSe${}_{\text{2}}$
• Current-voltage characteristic and shot noise of shift current photovoltaics

Cited by in corpus (16)

• Topological quantum materials from the viewpoint of chemistry
• Giant topological longitudinal circular photo-galvanic effect in the chiral multifold semimetal CoSi
• Linear and nonlinear optical responses in the chiral multifold semimetal RhSi
• Phonon-Assisted Ballistic Current From First Principles Calculations
• Role of time reversal symmetry and tilting in circular photogalvanic responses
• Two-dimensional Weyl points and nodal lines in pentagonal materials and their optical response
• Assessing the role of interatomic position matrix elements in tight-binding calculations of optical properties
• Large bulk photovoltaic effect and second-harmonic generation in few-layer pentagonal semiconductors PdS${}_2$ and PdSe${}_2$
• Directional shift current in mirror-symmetric BC${}_2$N
• Antiferromagnetism-induced second-order nonlinear optical responses of centrosymmetric bilayer CrI${}_3$
• Quantum Kinetics of the Magneto Photo Galvanic Effect
• The Berry Phase Rectification Tensor and The Solar Rectification Vector
• Correlation between electronic polarization and shift current in cubic and hexagonal semiconductors LiZn$X$ ($X$ = P, As, Sb)
• Moiré amplification of highly tunable shift current response in twisted trilayer graphene
• Lattice vibrational modes in changchengite from Raman spectroscopy and first principles electronic structure
• Identification of chirality of chiral multifold fermions in anti-crystals