Prediction of ferroelectricity-driven Berry curvature enabling charge- and spin-controllable photocurrent in tin telluride monolayers

Kim J, Kim KW, Shin D, Lee SH, Sinova J, Park N, Jin H (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 10

Article Number: 3965

Journal Issue: 1

DOI: 10.1038/s41467-019-11964-6

Abstract

In symmetry-broken crystalline solids, pole structures of Berry curvature (BC) can emerge, and they have been utilized as a versatile tool for controlling transport properties. For example, the monopole component of the BC is induced by the time-reversal symmetry breaking, and the BC dipole arises from a lack of inversion symmetry, leading to the anomalous Hall and nonlinear Hall effects, respectively. Based on first-principles calculations, we show that the ferroelectricity in a tin telluride monolayer produces a unique BC distribution, which offers charge- and spin-controllable photocurrents. Even with the sizable band gap, the ferroelectrically driven BC dipole is comparable to those of small-gap topological materials. By manipulating the photon handedness and the ferroelectric polarization, charge and spin circular photogalvanic currents are generated in a controllable manner. The ferroelectricity in group-IV monochalcogenide monolayers can be a useful tool to control the BC dipole and the nonlinear optoelectronic responses.

Involved external institutions

Ulsan National Institute of Science and Technology (UNIST) / 울산과학기술원 KR Korea, Republic of (KR) Korea Institute for Advanced Study (KIAS) / 한국 고등과학원 KR Korea, Republic of (KR) Korea Institute of Science and Technology (KIST) / 한국과학기술연구원 KR Korea, Republic of (KR) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE)

How to cite

APA:

Kim, J., Kim, K.-W., Shin, D., Lee, S.-H., Sinova, J., Park, N., & Jin, H. (2019). Prediction of ferroelectricity-driven Berry curvature enabling charge- and spin-controllable photocurrent in tin telluride monolayers. Nature Communications, 10(1). https://doi.org/10.1038/s41467-019-11964-6

MLA:

Kim, Jeongwoo, et al. "Prediction of ferroelectricity-driven Berry curvature enabling charge- and spin-controllable photocurrent in tin telluride monolayers." Nature Communications 10.1 (2019).

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