Three-dimensional Fermi surface from charge order in layered CsV3Sb5
Xiangwei Huang, Chunyu Guo, Carsten Putzke, Martin Gutierrez-Amigo, Yan Sun, Maia G. Vergniory, Ion Errea, Dong Chen, Claudia Felser, and Philip J. W. Moll
Phys. Rev. B 106 064510
23 August 2022
DOI: 10.1103/PhysRevB.106.064510
Abstract:
The cascade of electronic phases in CsV3Sb5 raises the prospect to disentangle their mutual interactions in a clean, strongly interacting kagome lattice. When the kagome planes are stacked into a crystal, its electronic dimensionality encodes how much of the kagome physics and its topological aspects survive. The layered structure of CsV3Sb5 reflects in Brillouin-zone-sized quasi-two-dimensional Fermi surfaces and significant transport anisotropy. Yet here we demonstrate that CsV3Sb5 is a three-dimensional (3D) metal within the charge density wave (CDW) state. Small 3D pockets play a crucial role in its low-temperature magneto- and quantum transport. Their emergence at TCDW ≈ 93 K results in an anomalous sudden increase of the in-plane magnetoresistance by four orders of magnitude. The presence of these 3D pockets is further confirmed by quantum oscillations under in-plane magnetic fields, demonstrating their closed nature. These results emphasize the impact of interlayer coupling on the kagome physics in 3D materials. more

Martin Gutierrez-Amigo, Yan Sun, Maia G. Vergniory, Ion Errea, Dong Chen, Claudia Felser, and Philip J. W. Moll
Phys. Rev. B 106 064510
23 August 2022
DOI: 10.1103/PhysRevB.106.064510

Abstract

The cascade of electronic phases in CsV3Sb5 raises the prospect to disentangle their mutual interactions in a clean, strongly interacting kagome lattice. When the kagome planes are stacked into a crystal, its electronic dimensionality encodes how much of the kagome physics and its topological aspects survive. The layered structure of CsV3Sb5 reflects in Brillouin-zone-sized quasi-two-dimensional Fermi surfaces and significant transport anisotropy. Yet here we demonstrate that CsV3Sb5 is a three-dimensional (3D) metal within the charge density wave (CDW) state. Small 3D pockets play a crucial role in its low-temperature magneto- and quantum transport. Their emergence at TCDW ≈ 93 K results in an anomalous sudden increase of the in-plane magnetoresistance by four orders of magnitude. The presence of these 3D pockets is further confirmed by quantum oscillations under in-plane magnetic fields, demonstrating their closed nature. These results emphasize the impact of interlayer coupling on the kagome physics in 3D materials.

 

Journal Article (1026)

1.
Journal Article
Y. Yang, T. Zhao, M.-H. Li, X. Wu, M. Han, S.-C. Yang, Q. Xu, L. D. Xian, X. Chi, N.-J. Zhao, H. Cui, S. Li, J.-S. Hu, B. Zhang, and Y. Jiang, "Passivation of positively charged cationic defects in perovskite with nitrogen-donor crown ether enabling efficient perovskite solar cells," Chemical Engineering Journal 451 (4), 138962 (2023).
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Three-dimensional Fermi surface from charge order in layered CsV3Sb5
Xiangwei Huang, Chunyu Guo, Carsten Putzke, Martin Gutierrez-Amigo, Yan Sun, Maia G. Vergniory, Ion Errea, Dong Chen, Claudia Felser, and Philip J. W. Moll
Phys. Rev. B 106 064510
23 August 2022
DOI: 10.1103/PhysRevB.106.064510

Three-dimensional Fermi surfaces from charge order in layered CsV3Sb5
X. Huang, C. Guo, C. Putzke, M. Gutierrez-Amigo, Y. Sun, M. G. Vergniory, I. Errea, D. Chen, C. Felser, P. J. W. Moll
Physical Review B 106 (6), 064510 (2022)
Three-dimensional Fermi surfaces from charge order in layered CsV3Sb5
X. Huang, C. Guo, C. Putzke, M. Gutierrez-Amigo, Y. Sun, M. G. Vergniory, I. Errea, D. Chen, C. Felser, P. J. W. Moll
Physical Review B 106 (6), 064510 (2022)
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