Rashba and Dresselhaus Effects in Hybrid Organic-Inorganic Perovskites: From Basics to Devices

Mikaël Kepenekian (1) , Roberto Robles (2) , Claudine Katan (1) , Daniel Sapori (3) , Laurent Pedesseau (3) , Jacky Even (3)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 ICN2 - ICN2 - Institut Catala de Nanociencia i Nanotecnologia
3 FOTON - Fonctions Optiques pour les Technologies de l'informatiON

We use symmetry analysis, density functional theory calculations, and k·p modeling to scrutinize Rashba and Dresselhaus effects in hybrid organic-inorganic halide perovskites. These perovskites are at the center of a recent revolution in the field of photovoltaics but have also demonstrated potential for optoelectronic applications such as transistors and light emitters. Due to a large spin-orbit coupling of the most frequently used metals, they are also predicted to offer a promising avenue for spin-based applications. With an in-depth inspection of the electronic structures and bulk lattice symmetries of a variety of systems, we analyze the origin of the spin splitting in two- and three-dimensional hybrid perovskites. It is shown that low-dimensional nanostructures made of CH3NH3PbX3 (X = I, Br) lead to spin splittings that can be controlled by an applied electric field. These findings further open the door for a perovskite-based spintronics.

Mots clés: perovskite; DFT; Rashba; spin-FET; ferroelectric; nanostructure; spin-orbit

Domaines: Matériaux; Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Mikaël Kepenekian, Roberto Robles, Claudine Katan, Daniel Sapori, Laurent Pedesseau, et al.. Rashba and Dresselhaus Effects in Hybrid Organic-Inorganic Perovskites: From Basics to Devices. ACS Nano, 2015, 9 (12), pp.11557-11567. ⟨10.1021/acsnano.5b04409⟩. ⟨hal-01205437⟩