Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session T70: Poster Session III(1:00pm-4:00pm)
1:00 PM,
Thursday, March 7, 2019
BCEC
Room: Exhibit Hall
Abstract: T70.00089 : Electronic structure and optical responses of chalcopyrite semiconductors ZnSnX_2 (X = P, As, Sb)
Presenter:
Banasree Sadhukhan
(IFW Institute for Theoretical Solid State Physics, Leibniz Institute for Solid State and Materials Research)
Author:
Banasree Sadhukhan
(IFW Institute for Theoretical Solid State Physics, Leibniz Institute for Solid State and Materials Research)
functions of the electric field of the light. The spontaneous photocurrent is due to the topological
character of the constituting electronic bands; the Berry connection. The photogalvanic effect rectifies light to dc currents and often plays a crucial role in optical devices and solar cells. Under linearly polarized light, the induced photocurrent is usually called shift current originated due to the charge center shift between the valence and conduction bands in the optical excitation. We study the electronic structure, linear and nonlinear optical response, specially the shift current of chalcopyrite
semiconductors ZnSnX_2 (X = P, As, Sb) using Kubo formulism via a multiband approach using first
principles. We analyze the relationship between the response and the matherials properties which
serves as a deep understanding of the shift current effects in noncentrosymmetric materials over
linear response.
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