Frustrated charge order and cooperative distortions in ScV6 Sn6

Ganesh Pokharel; Brenden R. Ortiz; Linus Kautzsch; S. J. Alvarado Gomez; Krishnanand Mallayya; Guang Wu; Eun Ah Kim; Jacob P.C. Ruff; Suchismita Sarker; Stephen D. Wilson

doi:10.1103/PhysRevMaterials.7.104201

Frustrated charge order and cooperative distortions in ScV6 Sn6

Ganesh Pokharel, Brenden R. Ortiz, Linus Kautzsch, S. J. Alvarado Gomez, Krishnanand Mallayya, Guang Wu, Eun Ah Kim, Jacob P.C. Ruff, Suchismita Sarker, Stephen D. Wilson

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Here we study the stability of charge order in the kagome metal ScV6Sn6. Synchrotron x-ray diffraction measurements reveal high-temperature, short-range charge correlations at the wave vectors along q=(13,13,12) whose interlayer correlation lengths diverge upon cooling. At the charge order transition, this divergence is interrupted, and long-range order freezes in along q=(13,13,13), as previously reported, while disorder enables the charge correlations to persist at the q=(13,13,12) wave vector down to the lowest temperatures measured. Both short-range and long-range charge correlations seemingly arise from the same instability and both are rapidly quenched upon the introduction of larger Y ions onto the Sc sites. Our results validate the theoretical prediction of the primary lattice instability at q=(13,13,12), and we present a heuristic picture for viewing the frustration of charge order in this compound.

Original language	English
Article number	104201
Journal	Physical Review Materials
Volume	7
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevMaterials.7.104201
State	Published - Oct 2023
Externally published	Yes

Funding

S.D.W. acknowledges helpful discussions with B. Yan, R. Seshadri, and L. Balents. This work was supported by the National Science Foundation (NSF) through Enabling Quantum Leap: Convergent Accelerated Discovery Foundries for Quantum Materials Science, Engineering and Information (Q-AMASE-i): Quantum Foundry at UC Santa Barbara (Grant No. DMR-1906325). The research made use of the shared facilities of the NSF Materials Research Science and Engineering Center at UC Santa Barbara (Grant No. DMR- 1720256). The UC Santa Barbara MRSEC is a member of the Materials Research Facilities Network. Research conducted at the Center for High-Energy X-ray Science (CHEXS) is supported by the National Science Foundation (BIO, ENG, and MPS directorates) under Award No. DMR-1829070. K.M. and E.-A.K. are supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering. The X-TEC analysis was carried out on a high-powered computing cluster funded in part by the New Frontier Grant from the College of Arts and Sciences at Cornell and by the Gordon and Betty Moore Foundation's EPiQS Initiative via Grant No. GBMF10436. E.-A.K. was also supported by the Ewha Frontier 10-10 Research Grant. E.-A.K. was supported in part by Simons fellows in theoretical physics program 920665.

Funders	Funder number
College of Arts and Sciences at Cornell
Materials Science, Engineering and Information
NSF Materials Research Science and Engineering Center at UC Santa Barbara	DMR- 1720256, DMR-1829070
National Science Foundation
U.S. Department of Energy
Gordon and Betty Moore Foundation	GBMF10436, 920665
Basic Energy Sciences
University of California, Santa Barbara	DMR-1906325
Division of Materials Sciences and Engineering

Access to Document

10.1103/PhysRevMaterials.7.104201

Cite this

@article{21233018c6dd4619970ab4fd57b2216a,

title = "Frustrated charge order and cooperative distortions in ScV6 Sn6",

abstract = "Here we study the stability of charge order in the kagome metal ScV6Sn6. Synchrotron x-ray diffraction measurements reveal high-temperature, short-range charge correlations at the wave vectors along q=(13,13,12) whose interlayer correlation lengths diverge upon cooling. At the charge order transition, this divergence is interrupted, and long-range order freezes in along q=(13,13,13), as previously reported, while disorder enables the charge correlations to persist at the q=(13,13,12) wave vector down to the lowest temperatures measured. Both short-range and long-range charge correlations seemingly arise from the same instability and both are rapidly quenched upon the introduction of larger Y ions onto the Sc sites. Our results validate the theoretical prediction of the primary lattice instability at q=(13,13,12), and we present a heuristic picture for viewing the frustration of charge order in this compound.",

author = "Ganesh Pokharel and Ortiz, {Brenden R.} and Linus Kautzsch and {Alvarado Gomez}, {S. J.} and Krishnanand Mallayya and Guang Wu and Kim, {Eun Ah} and Ruff, {Jacob P.C.} and Suchismita Sarker and Wilson, {Stephen D.}",

note = "Publisher Copyright: {\textcopyright} 2023 American Physical Society.",

year = "2023",

month = oct,

doi = "10.1103/PhysRevMaterials.7.104201",

language = "English",

volume = "7",

journal = "Physical Review Materials",

issn = "2475-9953",

publisher = "American Physical Society",

number = "10",

}

TY - JOUR

T1 - Frustrated charge order and cooperative distortions in ScV6 Sn6

AU - Pokharel, Ganesh

AU - Ortiz, Brenden R.

AU - Kautzsch, Linus

AU - Alvarado Gomez, S. J.

AU - Mallayya, Krishnanand

AU - Wu, Guang

AU - Kim, Eun Ah

AU - Ruff, Jacob P.C.

AU - Sarker, Suchismita

AU - Wilson, Stephen D.

PY - 2023/10

Y1 - 2023/10

N2 - Here we study the stability of charge order in the kagome metal ScV6Sn6. Synchrotron x-ray diffraction measurements reveal high-temperature, short-range charge correlations at the wave vectors along q=(13,13,12) whose interlayer correlation lengths diverge upon cooling. At the charge order transition, this divergence is interrupted, and long-range order freezes in along q=(13,13,13), as previously reported, while disorder enables the charge correlations to persist at the q=(13,13,12) wave vector down to the lowest temperatures measured. Both short-range and long-range charge correlations seemingly arise from the same instability and both are rapidly quenched upon the introduction of larger Y ions onto the Sc sites. Our results validate the theoretical prediction of the primary lattice instability at q=(13,13,12), and we present a heuristic picture for viewing the frustration of charge order in this compound.

AB - Here we study the stability of charge order in the kagome metal ScV6Sn6. Synchrotron x-ray diffraction measurements reveal high-temperature, short-range charge correlations at the wave vectors along q=(13,13,12) whose interlayer correlation lengths diverge upon cooling. At the charge order transition, this divergence is interrupted, and long-range order freezes in along q=(13,13,13), as previously reported, while disorder enables the charge correlations to persist at the q=(13,13,12) wave vector down to the lowest temperatures measured. Both short-range and long-range charge correlations seemingly arise from the same instability and both are rapidly quenched upon the introduction of larger Y ions onto the Sc sites. Our results validate the theoretical prediction of the primary lattice instability at q=(13,13,12), and we present a heuristic picture for viewing the frustration of charge order in this compound.

UR - http://www.scopus.com/inward/record.url?scp=85174205260&partnerID=8YFLogxK

U2 - 10.1103/PhysRevMaterials.7.104201

DO - 10.1103/PhysRevMaterials.7.104201

M3 - Article

AN - SCOPUS:85174205260

SN - 2475-9953

VL - 7

JO - Physical Review Materials

JF - Physical Review Materials

IS - 10

M1 - 104201

ER -

Frustrated charge order and cooperative distortions in ScV6 Sn6

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this