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Interplay of field-induced molecular dipole alignment and compensating surface polarization in low-temperature P − V hysteresis of MAPbBr 3 ( 001 )
- Source :
- Physical review materials 7(5), L052401 (2023). doi:10.1103/PhysRevMaterials.7.L052401
- Publication Year :
- 2023
- Publisher :
- APS, 2023.
-
Abstract
- Physical review materials 7(5), L052401 (2023). doi:10.1103/PhysRevMaterials.7.L052401<br />We demonstrate the presence of a hysteresis in tunneling spectra acquired at 4.3 K on cleaved MA-Br terminated (001) surfaces of MAPbBr3 single crystals. Simulations of the tunneling spectra reveal an underlying polarization-voltage (P-V) hysteresis, which is caused by an interplay of subsurface field-induced rotation and alignment of the MA molecules, stabilized by dipole-dipole interactions, and an ion-lattice relaxation. The resulting subsurface polarization is counteracted by a compensating surface polarization, detectable by surface-sensitive tunneling spectroscopy.<br />Published by APS, College Park, MD
- Subjects :
- ddc:530
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Physical review materials 7(5), L052401 (2023). doi:10.1103/PhysRevMaterials.7.L052401
- Accession number :
- edsair.doi.dedup.....25d69b95b83909bbe31405093c0bf6f3