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arXiv · 1608.00993

Spintronics of Organometal Trihalide Perovskites

Dali Sun·Chuang Zhang·Marzieh Kavand·Kipp J. van Schooten·Hans Malissa·Matthew Groesbeck·Ryan McLaughlin·Christoph Boehme·Z. Valy Vardeny
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Abstract

The family of organometal trihalide perovskite (OTP), CH3NH3PbX3 (where X is halogen) has recently revolutionized the photovoltaics field and shows promise in a variety of optoelectronic applications. The characteristic spin properties of charge and neutral excitations in OTPs are influenced by the large spin-orbit coupling of the Pb atoms, which may lead to spin-based device applications. Here we report the first studies of pure spin-current and spin-aligned carrier injection in OTP spintronics devices using spin-pumping and spin-injection, respectively. We measure a relatively large inverse-spin-Hall effect using pulsed microwave excitation in OTP devices at resonance with a ferromagnetic substrate, from which we derive room temperature spin diffusion length, lambda_sd~9nm; and low-temperature giant magnetoresistance in OTP-based spin-valves from which we estimate lambda_sd~85nm.

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Dali Sun, Chuang Zhang, Marzieh Kavand, Kipp J. van Schooten, Hans Malissa, Matthew Groesbeck, Ryan McLaughlin, Christoph Boehme, Z. Valy Vardeny. 2016-08-02. Spintronics of Organometal Trihalide Perovskites. https://arxiv.org/abs/1608.00993

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