Home
Resources
Publications
Prediction of Ferroelectricity-Driven Berry Curvature Enabling Charge- And Spin-Controllable Photocurrent in Tin Telluride Monolayers

Prediction of Ferroelectricity-Driven Berry Curvature Enabling Charge- And Spin-Controllable Photocurrent in Tin Telluride Monolayers

Jeongwoo Kim, Kyoung-Whan Kim, Dongbin Shin, Sang-Hoon Lee, Jairo Sinova, Noejung Park, Hosub Jin

Nat Commun. 2019 Sep 3;10(1):3965.

PMID: 31481651

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP12040027	Tin telluride		12040-02-7	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: