Journal Article

PUBDB-2025-05360

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Three-dimensional lattice modulations in the charge density wave system Lu$_2$Ir$_3$Si$_5$

Petkov, V. (Corresponding author)Extern* ; Zafar, A.Extern* ; Jakhar, M. ; Abeykoon, A. M. ; Hegedues, Z. (Last author)DESY*

2025
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/7ssv-t11s  doi:10.3204/PUBDB-2025-05360

Abstract: Using total and resonant x-ray scattering coupled to large-scale computer modeling, we study the latticemodulations in the complex charge density wave (CDW) material Lu$_2$Ir$_3$Si$_5$ . We find that it is a unique quantumsystem where periodic lattice modulations related to emergent CDW order occur in three orthogonal atomicplanes of the crystal lattice, leading to the emergence of an unusual three-dimensional (3D) pattern of shortand long Ir-Ir and Lu-Lu bonds. The 3D character of observed lattice modulations explains the largely isotropiccharacter of the changes in the electronic properties occurring when the CDW order sets in, demonstratingthe strong electron-lattice coupling in Lu$_2$Ir$_3$Si$_5$ . The result is supported by DFT calculations based on theexperimental structure data. Altogether, our work provides strong evidence for the presence of a relationshipbetween the dimensionality of emergent lattice distortions and that of concurrent changes in the electronicproperties of CDW materials. The relationship may need to be accounted for when these materials are exploredfor practical applications.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-D (FS-PETRA-D)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. FS-Proposal: I-20230737 (I-20230737) (I-20230737)

Experiment(s):

1. PETRA Beamline P21.2 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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