Frustrated Ising charge correlations in the kagome metal ScV 6 Sn 6

Alvarado, Steven J. Gomez; Pokharel, Ganesh; Ortiz, Brenden R.; Paddison, Joseph A. M.; Sarker, Suchismita; Ruff, Jacob P. C.; Wilson, Stephen D.

doi:10.1103/physrevb.110.l140304

Frustrated Ising charge correlations in the kagome metal ScV 6 Sn 6

Journal Article · Tue Oct 15 00:00:00 EDT 2024 · Physical Review. B

DOI:https://doi.org/10.1103/physrevb.110.l140304· OSTI ID:2478328

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Univ. of California, Santa Barbara, CA (United States)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Cornell Univ., Ithaca, NY (United States)

Here we resolve the real-space nature of the high-temperature, short-range charge correlations in the kagome metal ScV₆Sn₆. Diffuse scattering appears along a frustrated wave vector q_H = ($$\frac{1}{3}, \frac{1}{3}, \frac{1}{2}$$) at temperatures far exceeding the charge order T_CO = 92 K, preempting long-range charge order with wave vectors along q$$_{\bar{K}}$$ = ($$\frac{1}{3}, \frac{1}{3}, \frac{1}{3}$$). Using a combination of real space and reciprocal space analysis, we resolve the nature of the interactions between the primary out-of-plane Sc-Sn chain instability and the secondary strain-mediated distortion of the in-plane V kagome network. Finally, a minimal model of the diffuse scattering data reveals a high-temperature, short-ranged "zig-zag" phase of in-plane correlations that maps to a frustrated triangular lattice Ising model with antiferromagnetic interactions and provides a real-space understanding of the origin frustrated charge order in this material.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); University of California, Santa Barbara, CA (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: AC05-00OR22725; SC0020305

Other Award/Contract Number:: DMR-1829070
CNS-1725797
NSF DMR-2308708

OSTI ID:: 2478328

Alternate ID(s):: OSTI ID: 2474113
OSTI ID: 3005526

Journal Information:: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 14 Vol. 110; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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