{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T15:54:19Z","timestamp":1792166059982,"version":"4.4.0"},"reference-count":30,"publisher":"AIP Publishing","issue":"16","funder":[{"DOI":"10.13039\/100006132","name":"Office of Science","doi-asserted-by":"publisher","award":["DE-SC0019443"],"award-info":[{"award-number":["DE-SC0019443"]}],"id":[{"id":"10.13039\/100006132","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,4,28]]},"abstract":"<jats:p>An exciton\u2013polariton condensate is a hybrid light\u2013matter state in the quantum fluid phase. The photonic component endows it with characters of spin, as represented by circular polarization. Spin-polarization can form stochastically for quasi-equilibrium exciton\u2013polariton condensates at parallel momentum vector k|| \u223c 0 from bifurcation or deterministically for propagating condensates at k|| &amp;gt; 0 from the optical spin-Hall effect (OSHE). Here, we report deterministic spin-polarization in exciton\u2013polariton condensates at k|| \u223c 0 in microcavities containing methylammonium lead bromide perovskite (CH3NH3PbBr3) single crystals under non-resonant and linearly polarized excitation. We observe two energetically split condensates with opposite circular polarizations and attribute this observation to the presence of strong birefringence, which introduces a large OSHE at k|| \u223c 0 and pins the condensates in a particular spin state. Such spin-polarized exciton\u2013polariton condensates may serve not only as circularly polarized laser sources but also as effective alternatives to ultracold atom Bose\u2013Einstein condensates in quantum simulators of many-body spin\u2013orbit coupling processes.<\/jats:p>","DOI":"10.1063\/5.0202341","type":"journal-article","created":{"date-parts":[[2024,4,25]],"date-time":"2024-04-25T10:35:37Z","timestamp":1714041337000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":6,"title":["Optical spin hall effect in exciton\u2013polariton condensates in lead halide perovskite microcavities"],"prefix":"10.1063","volume":"160","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9055-7931","authenticated-orcid":false,"given":"Bo","family":"Xiang","sequence":"first","affiliation":[{"name":"Department of Chemistry, Columbia University 1 , New York, New York 10027, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3959-2675","authenticated-orcid":false,"given":"Yiliu","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Columbia University 1 , New York, New York 10027, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2480-9512","authenticated-orcid":false,"given":"M. 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