@article{22f7b208359646ec9c868be5274fea28,
title = "Intrinsic circularly polarized exciton emission in a twisted van der Waals heterostructure",
abstract = "We report the emergence of a significant degree of intrinsic circular polarization of exciton photoluminescence in a twisted MoSe2/WSe2 heterostructure upon nonresonant driving with a linearly polarized laser. The effect is not related to the polarization of the incident light. Moreover, it is present at zero magnetic field, and reacts perceptibly to a perpendicularly applied magnetic field that, unexpectedly, can strongly diminish this effect. The giant magnitude of the polarization, which cannot be explained by natural optical activity or circular dichroism of the twisted lattice, suggests a kinematic origin arising from an emergent pyromagnetic symmetry in our structure, which we exploit to gain insight into the microscopic optical processes of our device.",
author = "J. Michl and Palekar, {C. C.} and Tarasenko, {S. A.} and F. Lohof and C. Gies and {Von Helversen}, M. and R. Sailus and S. Tongay and T. Taniguchi and K. Watanabe and T. Heindel and B. Rosa and M. R{\"o}del and T. Shubina and S. H{\"o}fling and S. Reitzenstein and C. Anton-Solanas and C. Schneider",
note = "Funding Information: We thank M. Florian, D. Erben, S. Kersch, and A.V. Poshakinskiy for useful discussions. We acknowledge funding via the priority program SPP2244 2DMP of the German Research Foundation (DFG), via Projects No. SCHN1376 14-1, No. RE2974/26-1, No. GI1121/4-1, and No. RTG2247 (graduate school program). F.L. is grateful for his support from the CRDF of the University of Bremen. S.A.T. acknowledges support by Russian Science Foundation (Grant No. 19-12-00051, theory). T.S. acknowledges support by Russian Science Foundation (Grant No. 19-12-00273; data analysis). S.T. acknowledges Grants No. DOE-SC0020653, No. DMR 2111812, No. DMR 1933214, No. DMR 1904716, and No. ECCS 2052527 for material development and integration. K.W. and T.T. acknowledge support from the MEXT Element Strategy Initiative to Form Core Research Center, Grant No. JPMXP0112101001 and JSPS KAKENHI Grant No. JP20H00354. T.H. acknowledges financial support by the German Federal Ministry of Education and Research (BMBF) via the QuSecure project (Grant No. 13N14876) within the Photonic Research Germany funding program. S.H. acknowledges funding via the DFG Grant HO 5194/16-1. Publisher Copyright: {\textcopyright} 2022 American Physical Society.",
year = "2022",
month = jun,
day = "15",
doi = "10.1103/PhysRevB.105.L241406",
language = "English (US)",
volume = "105",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "24",
}