Shift photovoltaic current and magnetically induced bulk photocurrent in piezoelectric sillenite crystals
Aaron M. Burger, Lingyuan Gao, Radhe Agarwal, Alexey Aprelev, Jonathan E. Spanier, Andrew M. Rappe, Vladimir M. Fridkin and Univ. of Pennsylvania, Philadelphia, PA (United States)
Recently, it has been shown how shift and ballistic currents in piezoelectric sillenite crystals Bi12GeO20 and Bi12SiO20 can be separated experimentally under the assumption that the shift component of the circular current is small. However, it has been claimed that the shift and ballistic currents cannot be quantified by this method, due to the magnetophotovoltaic effect caused either by the change of the crystal's spatial symmetry in the magnetic field or by the breaking of time-reversal symmetry. Presently, we report observations of photovoltaic currents in Bi12SiO20, excited by linearly and circularly polarized light under weak external magnetic field, as well as measurements of the corresponding photo-Hall signals. We demonstrate that the magnetophotovoltaic current constitutes a significant fraction of the measured current in the Hall direction for Bi12SiO20 under specific experimental conditions.
Shift photovoltaic current and magnetically induced bulk photocurrent in piezoelectric sillenite crystals
Creators
Aaron M. Burger - Drexel University
Lingyuan Gao - University of Pennsylvania
Radhe Agarwal - Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
Alexey Aprelev - Drexel University
Jonathan E. Spanier - Drexel University
Andrew M. Rappe - University of Pennsylvania
Vladimir M. Fridkin - Drexel University
Univ. of Pennsylvania, Philadelphia, PA (United States)
Publication Details
Physical review. B, v 102(8)
Publisher
Amer Physical Soc
Number of pages
5
Grant note
CBET 1705440 / National Science Foundation, Division of Chemical, Bioengineering, Environment and Transport Systems
DMR 1608887 / Division ofMaterials Research; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
N00014-17-1-2970 / Office of Naval Research
DE-FG02-07ER46431 / Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE)
Resource Type
Journal article
Language
English
Academic Unit
Physics; Mechanical Engineering and Mechanics
Web of Science ID
WOS:000560605900001
Scopus ID
2-s2.0-85091993941
Other Identifier
991019167921204721
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