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Extraordinary phase coherence length in epitaxial halide perovskites
Kostyantyn Nasyedkin1,2, Isaac King3, Liangji Zhang1
1Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA.
Iscience
|August 17, 2021
Summary
Inorganic halide perovskites show quantum effects in thin films. Cesium tin iodide films exhibit long charge carrier coherence, enabling spintronics applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Quantum Electronics
Background:
- Inorganic halide perovskites are promising for diverse applications including solar energy and light emission.
- Epitaxial thin film growth enables the study of low-dimensional quantum electronic devices.
Purpose of the Study:
- Investigate quantum electronic properties of halide perovskites.
- Explore potential applications in spintronics and spin-orbitronics.
Main Methods:
- Vapor-phase epitaxy of halide perovskites.
- Low-temperature magnetotransport measurements.
- Weak anti-localization analysis.
Main Results:
- Single-domain cesium tin iodide (CsSnI3) epitaxial thin films were studied.
- Low-field magnetoresistance showed quantum interference and spin-orbit coupling.
- A micron-scale phase coherence length for charge carriers was observed.
Conclusions:
- Epitaxial halide perovskite heterostructures are suitable for quantum electronic studies.
- These materials offer potential for spintronics and spin-orbitronics applications.
