@article{SajediKrivenkovMarchenkoetal.2020, author = {Sajedi, Maryam and Krivenkov, Maxim and Marchenko, Dmitry and Varykhalov, Andrei and Sanchez-Barriga, Jaime and Rienks, Emile D. L. and Rader, Oliver}, title = {Absence of a giant Rashba effect in the valence band of lead halide perovskites}, series = {Physical review : B, Condensed matter and materials physics}, volume = {102}, journal = {Physical review : B, Condensed matter and materials physics}, number = {8}, publisher = {American Institute of Physics; American Physical Society (APS)}, address = {Woodbury, NY}, issn = {2469-9950}, doi = {10.1103/PhysRevB.102.081116}, pages = {6}, year = {2020}, abstract = {For hybrid organic-inorganic as well as all-inorganic lead halide perovskites a Rashba effect has been invoked to explain the high efficiency in energy conversion by prohibiting direct recombination. Both a bulk and surface Rashba effect have been predicted. In the valence band of methylammonium (MA) lead bromide a Rashba effect has been reported by angle-resolved photoemission and circular dichroism with giant values of 7-11 eV angstrom. We present band dispersion measurements of MAPbBr(3) and spin-resolved photoemission of CsPbBr3 to show that a large Rashba effect detectable by photoemission or circular dichroism does not exist and cannot be the origin of the high effciency.}, language = {en} }