%0 Journal Article %1 PhysRevB.105.195136 %A Stahl, Q. %A Chen, D. %A Ritschel, T. %A Shekhar, C. %A Sadrollahi, E. %A Rahn, M. C. %A Ivashko, O. %A Zimmermann, M. v. %A Felser, C. %A Geck, J. %D 2022 %I American Physical Society %J Phys. Rev. B %K a %N 19 %P 195136 %R 10.1103/PhysRevB.105.195136 %T Temperature-driven reorganization of electronic order in CsV$_3$Sb$_5$ %U https://link.aps.org/doi/10.1103/PhysRevB.105.195136 %V 105 %X We report x-ray diffraction studies of the electronic ordering instabilities in the kagome material CsV3Sb5 as a function of temperature and applied magnetic field. Our zero-field measurements between 10 and 120 K reveal an unexpected reorganization of the three-dimensional electronic order in the bulk of CsV3Sb5: At low temperatures, a 2×2×2 superstructure modulation due to electronic order is observed, which upon warming changes to a 2×2×4 superstructure at 60 K. The electronic order-order transition discovered here involves a change in the stacking of electronically ordered V3Sb5 layers, which coincides with anomalies previously observed in magnetotransport measurements. This implies that the temperature-dependent three-dimensional electronic order plays a decisive role for transport properties, which are related to the Berry curvature of the V bands. We also show that the bulk electronic order in CsV3Sb5 breaks the sixfold rotational symmetry of the underlying P6/mmm lattice and perform a crystallographic analysis of the 2×2×2 phase. The latter yields two possible superlattices, namely a staggered star-of-David and a staggered inverse star-of-David structure. Applied magnetic fields up to 10 T have no effect on the x-ray diffraction signal. This, however, does not rule out time-reversal symmetry breaking in CsV3Sb5.

@article{PhysRevB.105.195136, abstract = {We report x-ray diffraction studies of the electronic ordering instabilities in the kagome material CsV3Sb5 as a function of temperature and applied magnetic field. Our zero-field measurements between 10 and 120 K reveal an unexpected reorganization of the three-dimensional electronic order in the bulk of CsV3Sb5: At low temperatures, a 2×2×2 superstructure modulation due to electronic order is observed, which upon warming changes to a 2×2×4 superstructure at 60 K. The electronic order-order transition discovered here involves a change in the stacking of electronically ordered V3Sb5 layers, which coincides with anomalies previously observed in magnetotransport measurements. This implies that the temperature-dependent three-dimensional electronic order plays a decisive role for transport properties, which are related to the Berry curvature of the V bands. We also show that the bulk electronic order in CsV3Sb5 breaks the sixfold rotational symmetry of the underlying P6/mmm lattice and perform a crystallographic analysis of the 2×2×2 phase. The latter yields two possible superlattices, namely a staggered star-of-David and a staggered inverse star-of-David structure. Applied magnetic fields up to 10 T have no effect on the x-ray diffraction signal. This, however, does not rule out time-reversal symmetry breaking in CsV3Sb5.}, added-at = {2022-06-03T14:42:48.000+0200}, author = {Stahl, Q. and Chen, D. and Ritschel, T. and Shekhar, C. and Sadrollahi, E. and Rahn, M. C. and Ivashko, O. and Zimmermann, M. v. and Felser, C. and Geck, J.}, biburl = {https://www.bibsonomy.org/bibtex/226335c506ee69491e705fef9e11b89b4/ctqmat}, day = 24, description = {Phys. Rev. B 105, 195136 (2022) - Temperature-driven reorganization of electronic order in ${\mathrm{CsV}}_{3}{\mathrm{Sb}}_{5}$}, doi = {10.1103/PhysRevB.105.195136}, interhash = {1f790bcd5be36ccb36407ad77044020c}, intrahash = {26335c506ee69491e705fef9e11b89b4}, journal = {Phys. Rev. B}, keywords = {a}, month = {05}, number = 19, numpages = {7}, pages = 195136, publisher = {American Physical Society}, timestamp = {2023-10-19T09:10:55.000+0200}, title = {Temperature-driven reorganization of electronic order in CsV$_{\mathbf{3}}$Sb$_{\mathbf{5}}$}, url = {https://link.aps.org/doi/10.1103/PhysRevB.105.195136}, volume = 105, year = 2022 }