Print Email Facebook Twitter Sensing the Local Magnetic Environment through Optically Active Defects in a Layered Magnetic Semiconductor Title Sensing the Local Magnetic Environment through Optically Active Defects in a Layered Magnetic Semiconductor Author Klein, Julian (Massachusetts Institute of Technology) Song, Zhigang (Harvard University; UCLA) Pingault, B.J. (TU Delft QID/Taminiau Lab; Harvard University) Dirnberger, Florian (City College of New York) Chi, Hang (U.S. Army Research Laboratory; Massachusetts Institute of Technology) Curtis, Jonathan B. (Harvard University; UCLA) Dana, Rami (Massachusetts Institute of Technology) Bushati, Rezlind (City College of New York; City University of New York) Quan, Jiamin (The University of Texas at Austin; City University of New York; City College of New York) Date 2023 Abstract Atomic-level defects in van der Waals (vdW) materials are essential building blocks for quantum technologies and quantum sensing applications. The layered magnetic semiconductor CrSBr is an outstanding candidate for exploring optically active defects because of a direct gap, in addition to a rich magnetic phase diagram, including a recently hypothesized defect-induced magnetic order at low temperature. Here, we show optically active defects in CrSBr that are probes of the local magnetic environment. We observe a spectrally narrow (1 meV) defect emission in CrSBr that is correlated with both the bulk magnetic order and an additional low-temperature, defect-induced magnetic order. We elucidate the origin of this magnetic order in the context of local and nonlocal exchange coupling effects. Our work establishes vdW magnets like CrSBr as an exceptional platform to optically study defects that are correlated with the magnetic lattice. We anticipate that controlled defect creation allows for tailor-made complex magnetic textures and phases with direct optical access. Subject CrSBrdefect emissiondefect magnetic ordermagnetic correlationmagnetic semiconductorsensingvan der Waals magnet To reference this document use: http://resolver.tudelft.nl/uuid:50e1cc03-d74a-4ec6-8649-0e6a6a927afc DOI https://doi.org/10.1021/acsnano.2c07655 Embargo date 2023-07-01 ISSN 1936-0851 Source ACS Nano (online), 17 (1), 288-299 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Julian Klein, Zhigang Song, B.J. Pingault, Florian Dirnberger, Hang Chi, Jonathan B. Curtis, Rami Dana, Rezlind Bushati, Jiamin Quan, More Authors Files PDF acsnano.2c07655.pdf 5.65 MB Close viewer /islandora/object/uuid:50e1cc03-d74a-4ec6-8649-0e6a6a927afc/datastream/OBJ/view