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arXiv · 2203.15192

Rotation and electric-field responses and absolute enantioselection in chiral crystals

Rikuto Oiwa·Hiroaki Kusunose
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Abstract

Microscopic origin of chirality and possible electric-field induced rotation and rotation-field induced electric polarization are investigated. By building up a realistic tight-binding model for elemental Te crystal in terms of symmetry-adopted basis, we identify the microscopic origin of the chirality and essential couplings among polar and axial vectors with the same time-reversal properties. Based on this microscopic model, we elucidate quantitatively that the inter-band process, driven by the nearest-neighbor spin-dependent imaginary hopping, is the key factor in the electric-field induced rotation and its inverse response. From the symmetry point of view, these couplings are characteristic common to any chiral material, leading to a possible experimental approach to achieve absolute enantioselection by simultaneously applied electric and rotation fields, or magnetic field and electric current, and so on, as a conjugate field of the chirality.

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Rikuto Oiwa, Hiroaki Kusunose. 2022-03-29. Rotation and electric-field responses and absolute enantioselection in chiral crystals. https://doi.org/10.1103/physrevlett.129.116401

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