Hierarchy of Lifshitz transitions in the surface electronic structure of Sr2RuO4 under uniaxial compression

Edgar Abarca Morales; Gesa-Roxanne Siemann; Andela Zivanovic; Philip  Murgatroyd; Igor Markovic; Brendan Edwards; Chris Hooley; D Sokolov; N Kikugawa; C Cacho; M Watson; T Kim; Clifford William Hicks; Andrew Mackenzie; Phil King

doi:10.1103/PhysRevLett.130.096401

Hierarchy of Lifshitz transitions in the surface electronic structure of Sr₂RuO₄ under uniaxial compression

Edgar Abarca Morales, Gesa-Roxanne Siemann, Andela Zivanovic, Philip Murgatroyd, Igor Markovic, Brendan Edwards, Chris Hooley, D Sokolov, N Kikugawa, C Cacho, M Watson, T Kim, Clifford William Hicks, Andrew Mackenzie, Phil King^*

^*Corresponding author for this work

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

Abstract

We report the evolution of the electronic structure at the surface of the layered perovskite Sr₂RuO₄ under large in-plane uniaxial compression, leading to anisotropic B_1g strains of ε_xx − ε_yy = −0.9 ± 0.1%. From angle-resolved photoemission, we show how this drives a sequence of Lifshitz transitions, reshaping the low-energy electronic structure and the rich spectrum of van Hove singularities that the surface layer of Sr₂RuO₄ hosts. From comparison to tight-binding modelling, we find that the strain is accommodated predominantly by bond-length changes rather than modifications of octahedral tilt and rotation angles. Our study sheds new light on the nature of structural distortions at oxide surfaces, and how targeted control of these can be used to tune density of states singularities to the Fermi level, in turn paving the way to the possible realisation of rich collective states at the Sr₂RuO₄ surface.

Original language	English
Article number	096401
Number of pages	7
Journal	Physical Review Letters
Volume	130
Issue number	9
Early online date	27 Feb 2023
DOIs	https://doi.org/10.1103/PhysRevLett.130.096401
Publication status	Published - 3 Mar 2023

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10.1103/PhysRevLett.130.096401

Sr214_surface_strain
Copyright © 2023 the Authors. This work has been made available online in accordance with the Rights Retention Strategy This accepted manuscript is distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The final published version of this work is available at https://journals.aps.org/prl/accepted/1d07aYd1Hc213a95a00261c77f48ade3161f83608.
Accepted author manuscript, 6.82 MBLicence: CC BY

Strain-tuning electronic structure: Strain-tuning electronic structure and quantum many-body interactions
King, P. (PI)
EPSRC
1/11/20 → 31/10/24
Project: Standard
Controlling Emergent Orders in Quantum: Controlling Emergent Orders in Quantum Materials
Wahl, P. (PI), Hooley, C. (CoI) & Lee, S. (CoI)
EPSRC
1/06/18 → 30/06/23
Project: Standard
Engineered Quantum States: Engineered quantum states via atmoic-scale assembly of artificial 2D heterostructures
King, P. (PI)
The Leverhulme Trust
1/08/17 → 31/07/22
Project: Standard

Hierarchy of Lifshitz transitions in the surface electronic structure of Sr2RuO4 under uniaxial compression (dataset)
Abarca Morales, E. (Creator), Siemann, G.-R. (Creator), Zivanovic, A. (Creator), Murgatroyd, P. (Creator), Markovic, I. (Creator), Edwards, B. (Creator), Hooley, C. (Creator), sokolov, D. (Creator), Kikugawa, N. (Creator), Cacho, C. (Creator), Watson, M. (Creator), Kim, T. (Creator), Hicks, C. W. (Creator), Mackenzie, A. (Creator) & King, P. (Creator), University of St Andrews, 28 Feb 2023
DOI: 10.17630/be3be544-f107-4863-93a3-eff656095c15
Dataset

File

Studying the electronic structure of the polar surfaces of delafossites using μ-ARPES
Siemann, G.-R. (Author), King, P. D. (Supervisor), 10 Jun 2024
Student thesis: Doctoral Thesis (PhD)

Cite this

Abarca Morales, E., Siemann, G.-R., Zivanovic, A., Murgatroyd, P., Markovic, I., Edwards, B., Hooley, C., Sokolov, D., Kikugawa, N., Cacho, C., Watson, M., Kim, T., Hicks, C. W., Mackenzie, A., & King, P. (2023). Hierarchy of Lifshitz transitions in the surface electronic structure of Sr₂RuO₄ under uniaxial compression. Physical Review Letters, 130(9), Article 096401. https://doi.org/10.1103/PhysRevLett.130.096401

@article{c4e70ae5a2b4442fb4298e06da8ecd9a,

title = "Hierarchy of Lifshitz transitions in the surface electronic structure of Sr2RuO4 under uniaxial compression",

abstract = "We report the evolution of the electronic structure at the surface of the layered perovskite Sr2RuO4 under large in-plane uniaxial compression, leading to anisotropic B1g strains of εxx − εyy = −0.9 ± 0.1%. From angle-resolved photoemission, we show how this drives a sequence of Lifshitz transitions, reshaping the low-energy electronic structure and the rich spectrum of van Hove singularities that the surface layer of Sr2RuO4 hosts. From comparison to tight-binding modelling, we find that the strain is accommodated predominantly by bond-length changes rather than modifications of octahedral tilt and rotation angles. Our study sheds new light on the nature of structural distortions at oxide surfaces, and how targeted control of these can be used to tune density of states singularities to the Fermi level, in turn paving the way to the possible realisation of rich collective states at the Sr2RuO4 surface.",

author = "{Abarca Morales}, Edgar and Gesa-Roxanne Siemann and Andela Zivanovic and Philip Murgatroyd and Igor Markovic and Brendan Edwards and Chris Hooley and D Sokolov and N Kikugawa and C Cacho and M Watson and T Kim and Hicks, {Clifford William} and Andrew Mackenzie and Phil King",

note = "Funding: We gratefully acknowledge support from the Engineering and Physical Sciences Research Council (Grant Nos. EP/T02108X/1 and EP/R031924/1), the European Research Council (through the QUESTDO project, 714193), and the Leverhulme Trust (Grant No. RL-2016-006). E.A.M., A.Z., and I.M. gratefully acknowledge studentship support from the International Max-Planck Research School for Chemistry and Physics of Quantum Materials. N.K. is supported by a KAKENHI Grants-in-Aids for Scientific Research (Grant Nos.18K04715, and 21H01033), and Core-to-Core Program (No. JPJSCCA20170002) from the Japan Society for the Promotion of Science (JSPS) and by a JST-Mirai Program (Grant No. JPMJMI18A3). APM and CWH acknowledge support from the Deutsche Forschungsgemeinschaft - TRR 435 288 - 422213477 (project A10). We thank Diamond Light Source for access to Beamline I05 (Proposals SI27471 and SI28412), which contributed to the results presented here.",

year = "2023",

month = mar,

day = "3",

doi = "10.1103/PhysRevLett.130.096401",

language = "English",

volume = "130",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

Abarca Morales, E, Siemann, G-R, Zivanovic, A, Murgatroyd, P, Markovic, I, Edwards, B, Hooley, C, Sokolov, D, Kikugawa, N, Cacho, C, Watson, M, Kim, T, Hicks, CW, Mackenzie, A & King, P 2023, 'Hierarchy of Lifshitz transitions in the surface electronic structure of Sr₂RuO₄ under uniaxial compression', Physical Review Letters, vol. 130, no. 9, 096401. https://doi.org/10.1103/PhysRevLett.130.096401

TY - JOUR

T1 - Hierarchy of Lifshitz transitions in the surface electronic structure of Sr2RuO4 under uniaxial compression

AU - Abarca Morales, Edgar

AU - Siemann, Gesa-Roxanne

AU - Zivanovic, Andela

AU - Murgatroyd, Philip

AU - Markovic, Igor

AU - Edwards, Brendan

AU - Hooley, Chris

AU - Sokolov, D

AU - Kikugawa, N

AU - Cacho, C

AU - Watson, M

AU - Kim, T

AU - Hicks, Clifford William

AU - Mackenzie, Andrew

AU - King, Phil

N1 - Funding: We gratefully acknowledge support from the Engineering and Physical Sciences Research Council (Grant Nos. EP/T02108X/1 and EP/R031924/1), the European Research Council (through the QUESTDO project, 714193), and the Leverhulme Trust (Grant No. RL-2016-006). E.A.M., A.Z., and I.M. gratefully acknowledge studentship support from the International Max-Planck Research School for Chemistry and Physics of Quantum Materials. N.K. is supported by a KAKENHI Grants-in-Aids for Scientific Research (Grant Nos.18K04715, and 21H01033), and Core-to-Core Program (No. JPJSCCA20170002) from the Japan Society for the Promotion of Science (JSPS) and by a JST-Mirai Program (Grant No. JPMJMI18A3). APM and CWH acknowledge support from the Deutsche Forschungsgemeinschaft - TRR 435 288 - 422213477 (project A10). We thank Diamond Light Source for access to Beamline I05 (Proposals SI27471 and SI28412), which contributed to the results presented here.

PY - 2023/3/3

Y1 - 2023/3/3

N2 - We report the evolution of the electronic structure at the surface of the layered perovskite Sr2RuO4 under large in-plane uniaxial compression, leading to anisotropic B1g strains of εxx − εyy = −0.9 ± 0.1%. From angle-resolved photoemission, we show how this drives a sequence of Lifshitz transitions, reshaping the low-energy electronic structure and the rich spectrum of van Hove singularities that the surface layer of Sr2RuO4 hosts. From comparison to tight-binding modelling, we find that the strain is accommodated predominantly by bond-length changes rather than modifications of octahedral tilt and rotation angles. Our study sheds new light on the nature of structural distortions at oxide surfaces, and how targeted control of these can be used to tune density of states singularities to the Fermi level, in turn paving the way to the possible realisation of rich collective states at the Sr2RuO4 surface.

AB - We report the evolution of the electronic structure at the surface of the layered perovskite Sr2RuO4 under large in-plane uniaxial compression, leading to anisotropic B1g strains of εxx − εyy = −0.9 ± 0.1%. From angle-resolved photoemission, we show how this drives a sequence of Lifshitz transitions, reshaping the low-energy electronic structure and the rich spectrum of van Hove singularities that the surface layer of Sr2RuO4 hosts. From comparison to tight-binding modelling, we find that the strain is accommodated predominantly by bond-length changes rather than modifications of octahedral tilt and rotation angles. Our study sheds new light on the nature of structural distortions at oxide surfaces, and how targeted control of these can be used to tune density of states singularities to the Fermi level, in turn paving the way to the possible realisation of rich collective states at the Sr2RuO4 surface.

U2 - 10.1103/PhysRevLett.130.096401

DO - 10.1103/PhysRevLett.130.096401

M3 - Article

SN - 0031-9007

VL - 130

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 096401

ER -

Hierarchy of Lifshitz transitions in the surface electronic structure of Sr2RuO4 under uniaxial compression

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Projects

Strain-tuning electronic structure: Strain-tuning electronic structure and quantum many-body interactions

Controlling Emergent Orders in Quantum: Controlling Emergent Orders in Quantum Materials

Engineered Quantum States: Engineered quantum states via atmoic-scale assembly of artificial 2D heterostructures

Datasets

Hierarchy of Lifshitz transitions in the surface electronic structure of Sr2RuO4 under uniaxial compression (dataset)

Student theses

Studying the electronic structure of the polar surfaces of delafossites using μ-ARPES

Cite this

Hierarchy of Lifshitz transitions in the surface electronic structure of Sr₂RuO₄ under uniaxial compression