Spin Dependent Charge Transport through 2D Chiral Hybrid Lead-Iodide Perovskites

Matthew Beard, Haipeng Lu, Chuanxiao Xiao, Xihan Chen, Roman Brunecky, Joseph Berry, Kai Zhu, Zeev Vardeny, Jingying Wang, Xin Pan

Research output: Contribution to journalArticlepeer-review

290 Scopus Citations

Abstract

Chiral-induced spin selectivity (CISS) occurs when the chirality of the transporting medium selects one of the two spin ½ states to transport through the media while blocking the other. Monolayers of chiral organic molecules demonstrate CISS but are limited in their efficiency and utility by the requirement of a monolayer to preserve the spin selectivity. We demonstrate CISS in a system that integrates an inorganic framework with a chiral organic sublattice inducing chirality to the hybrid system. Using magnetic conductive-probe atomic force microscopy, we find that oriented chiral 2D-layered Pb-iodide organic/inorganic hybrid perovskite systems exhibit CISS. Electron transport through the perovskite films depends on the magnetization of the probe tip and the handedness of the chiral molecule. The films achieve a highest spin-polarization transport of up to 86%. Magnetoresistance studies in modified spin-valve devices having only one ferromagnet electrode confirm the occurrence of spin-dependent charge transport through the organic/inorganic layers.

Original languageAmerican English
Article numbereaay0571
Number of pages7
JournalScience Advances
Volume5
Issue number12
DOIs
StatePublished - 6 Dec 2019

Bibliographical note

Publisher Copyright:
Copyright © 2019 The Authors

NREL Publication Number

  • NREL/JA-5900-73594

Keywords

  • chirality
  • perovskite
  • spin dependent transport
  • spintronics

Fingerprint

Dive into the research topics of 'Spin Dependent Charge Transport through 2D Chiral Hybrid Lead-Iodide Perovskites'. Together they form a unique fingerprint.

Cite this