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@ARTICLE{Elmers:626184,
      author       = {Elmers, Hans-Joachim and Tkach, O. and Lytvynenko, Y. and
                      Yogi, P. and Schmitt, M. and Biswas, D. and Liu, J. and
                      Chernov, S. V. and Nguyen, Quynh and Hoesch, M. and
                      Kutnyakhov, D. and Wind, N. and Wenthaus, L. and Scholz, M.
                      and Rossnagel, K. and Gloskovskii, A. and Schlueter, C. and
                      Winkelmann, A. and Haghighirad, A.-A. and Lee, T.-L. and
                      Sing, M. and Claessen, R. and Le Tacon, M. and Demsar, J.
                      and Schoenhense, Gerd and Fedchenko, O.},
      title        = {{C}hirality in the {K}agome {M}etal {C}s{V}$_3${S}b$_5$},
      journal      = {Physical review letters},
      volume       = {134},
      number       = {9},
      issn         = {0031-9007},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PUBDB-2025-01327},
      pages        = {096401},
      year         = {2025},
      note         = {restricted document, copyright restrictionsThis work was
                      funded by theDeutsche Forschungsgemeinschaft (DFG,
                      GermanResearch Foundation), Grant No.
                      TRR288–422213477(Projects B03, B04, and B08), and Grant
                      No. Scho341/16-1, through the Collaborative Research Center
                      SFB 1170ToCoTronics (Project No. 258499086), through
                      theWürzburg-Dresden Cluster of Excellence on Complexityand
                      Topology in Quantum Matter ct.qmat (EXC 2147,Project No.
                      390858490), and by the BMBF (Projects05K22UM2, 05K22UM4, and
                      05K22WW1). Funding forthe instrument by the Federal Ministry
                      of Education andResearch (BMBF) under framework program ErUM
                      isgratefully acknowledged. We thank the Diamond LightSource
                      for providing beamtime at beamline I09. Weacknowledge DESY
                      (Hamburg, Germany) for the provisionof experimental
                      facilities. Parts of this research were carriedout at PETRA
                      III using beamlines P04 and P22. This workwas partially
                      funded by the Helmholtz Association IVF fundunder project
                      InterLabs-0002 “HELPFEL.},
      abstract     = {Using x-ray photoelectron diffraction (XPD) and
                      angle-resolved photoemission spectroscopy, we study
                      photoemission intensity changes related to changes in the
                      geometric and electronic structure in the kagome metal
                      CsV$_3$⁢Sb$_5$ upon transition to an unconventional charge
                      density wave (CDW) state. The XPD patterns reveal the
                      presence of a chiral atomic structure in the CDW phase.
                      Furthermore, using circularly polarized x-rays, we have
                      found a pronounced nontrivial circular dichroism in the
                      angular distribution of the valence band photoemission in
                      the CDW phase, indicating a chirality of the electronic
                      structure. This observation is consistent with the proposed
                      orbital loop current order. In view of a negligible
                      spontaneous Kerr signal in recent magneto-optical studies,
                      the results suggest an antiferromagnetic coupling of the
                      orbital magnetic moments along the 𝑐 axis. While the
                      inherent structural chirality may also induce circular
                      dichroism, the observed asymmetry values seem to be too
                      large in the case of the weak structural distortions caused
                      by the CDW.},
      cin          = {DOOR ; HAS-User / FS-SXQM / FS-PETRA-S / FS-FLASH-O},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-SXQM-20190201
                      / I:(DE-H253)FS-PETRA-S-20210408 /
                      I:(DE-H253)FS-FLASH-O-20160930},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
                      DFG project G:(GEPRIS)422213477 - TRR 288: Elastisches
                      Tuning und elastische Reaktion elektronischer Quantenphasen
                      der Materie (ELASTO-Q-MAT) (422213477) / DFG project
                      G:(GEPRIS)444821420 - Elastische Kontrolle von
                      konkurrierenden Ordnungen in korrelierten Quantenmaterialien
                      (B03) (444821420) / DFG project G:(GEPRIS)444821616 -
                      Impuls-Mikroskopie von stark korrelierten Systemen unter
                      mechanischer Dehnung (B04) (444821616) / DFG project
                      G:(GEPRIS)444846624 - Ultraschnelle Spektroskopie und
                      Manipulation gekoppelter elektronischer/Gitter-Ordnungen
                      (B08) (444846624) / DFG project G:(GEPRIS)258499086 - SFB
                      1170: Topologische und korrelierte Elektronik in Ober- und
                      Grenzflächen ("ToCoTronics") (258499086) / DFG project
                      G:(GEPRIS)390858490 - EXC 2147: Komplexität und Topologie
                      in Quantenmaterialien (CT.QMAT) (390858490)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
                      G:(GEPRIS)422213477 / G:(GEPRIS)444821420 /
                      G:(GEPRIS)444821616 / G:(GEPRIS)444846624 /
                      G:(GEPRIS)258499086 / G:(GEPRIS)390858490},
      experiment   = {EXP:(DE-H253)P-P04-20150101 / EXP:(DE-H253)P-P22-20150101 /
                      EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:40131065},
      UT           = {WOS:001458956900003},
      doi          = {10.1103/PhysRevLett.134.096401},
      url          = {https://bib-pubdb1.desy.de/record/626184},
}