Switchable Rashba anisotropy in layered hybrid organic-inorganic perovskite by hybrid improper ferroelectricity  

作　　者：Fei Wang Heng Gao Coen de Graaf Josep M.Poblet Branton J.Campbell Alessandro Stroppa 

机构地区：[1]Departament de Química Física i Inorganica,Universitat Rovira i Virgili,c/Marcel·líDomingo 1,Tarragona 43007,Spain [2]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [3]Songshan Lake Materials Laboratory,Dongguan,Guangdong 523808,China [4]ICREA,Pg.Lluis Companys 23,Barcelona 08010,Spain [5]Department of Physics&Astronomy,Brigham Young University,Provo,UT 84602,USA [6]CNR-SPIN c/o Department of Physical and Chemical Sciences,University of L’Aquila,Via Vetoio,I-67100 Coppito,L’Aquila,Italy

出　　处：《npj Computational Materials》2020年第1期147-154,共8页计算材料学（英文）

基　　金：This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No.713679 and from the Universitat Rovira i Virgili(URV);J.M.P.and C.d.G thank the Spanish Ministry of Science(grants CTQ2017-87269-P and CTQ2017-83566-P);the Generalitat de Catalunya(grant 2017SGR629)for support;J.M.P.also thanks ICREA foundation for an ICREA ACADEMIA award;H.G.acknowledges support from the National Postdoctoral Program for Innovative Talents(No.BX20190361);Guangdong Basic and Applied Basic Research Foundation(No.2019A1515110965).

摘　　要：Hybrid organic–inorganic perovskites(HOIPs)are introducing exotic directions in the photovoltaic materials landscape.The coexistence of inversion symmetry breaking and spin–orbit interactions play a key role in their optoelectronic properties.We perform a detailed study on a recently synthesized ferroelectric layered HOIP,(AMP)PbI_(4)(AMP=4-aminomethyl-piperidinium).The calculated polarization and Rashba parameters are in excellent agreement with experimental values.

关 键 词：properties ferroelectric perovskite 

分 类 号：O47[理学—半导体物理]