Randomness and frustration in a S= 12 square-lattice Heisenberg antiferromagnet

Ellen Fogh; Otto Mustonen; Peter Babkevich; Vamshi M. Katukuri; Helen C. Walker; Lucile Mangin-Thro; Maarit Karppinen; Simon Ward; Bruce Normand; Henrik M. Rønnow

doi:10.1103/PhysRevB.105.184410

Randomness and frustration in a S= 12 square-lattice Heisenberg antiferromagnet

Ellen Fogh^*, Otto Mustonen, Peter Babkevich, Vamshi M. Katukuri, Helen C. Walker, Lucile Mangin-Thro, Maarit Karppinen, Simon Ward, Bruce Normand, Henrik M. Rønnow

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Abstrakti

We explore the interplay between randomness and magnetic frustration in the series of S=12 Heisenberg square-lattice compounds Sr2CuTe1-xWxO6. Substituting W for Te alters the magnetic interactions dramatically, from strongly nearest-neighbor to next-nearest-neighbor antiferromagnetic coupling. We perform neutron scattering measurements to probe the magnetic ground state and excitations over a range of x. We propose a bond-disorder model that reproduces ground states with only short-ranged spin correlations in the mixed compounds. The calculated neutron diffraction patterns and powder spectra agree well with the measured data and allow detailed predictions for future measurements. We conclude that quenched randomness plays the major role in defining the physics of Sr2CuTe1-xWxO6 with frustration being less significant.

Alkuperäiskieli	Englanti
Artikkeli	184410
Sivut	1-7
Sivumäärä	7
Julkaisu	Physical Review B
Vuosikerta	105
Numero	18
DOI - pysyväislinkit	https://doi.org/10.1103/PhysRevB.105.184410
Tila	Julkaistu - 12 toukok. 2022
OKM-julkaisutyyppi	A1 Julkaistu artikkeli, soviteltu

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10.1103/PhysRevB.105.184410

Randomness and frustration in a S=12 square-lattice Heisenberg antiferromagnetFinal published version, 1,98 MB

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Inelastic neutron scattering investigation of Sr2CuTeO6
Karppinen, M. (Contributor), Mustonen, O. (Creator), Walker, H. (Creator), Adroja, D. (Creator) & Vasala, S. (Creator), ISIS Facility, 15 jouluk. 2019
DOI - pysyväislinkki: 10.5286/isis.e.rb1620093, https://doi.org/10.5286%2Fisis.e.rb1620093
Tietoaineisto: Dataset
INS study of double perovskite at the border between two and three dimensional magnetism
Walker, H. (Contributor), Mustonen, O. (Creator), Adroja, D. (Creator), Karppinen, M. (Creator), Vasala, S. (Creator) & Tiittanen, T. (Creator), ISIS Facility, 15 heinäk. 2018
DOI - pysyväislinkki: 10.5286/isis.e.rb1520052, https://doi.org/10.5286%2Fisis.e.rb1520052
Tietoaineisto: Dataset

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@article{bcf783bec09a4e768b3902a92ff6bc00,

title = "Randomness and frustration in a S= 12 square-lattice Heisenberg antiferromagnet",

abstract = "We explore the interplay between randomness and magnetic frustration in the series of S=12 Heisenberg square-lattice compounds Sr2CuTe1-xWxO6. Substituting W for Te alters the magnetic interactions dramatically, from strongly nearest-neighbor to next-nearest-neighbor antiferromagnetic coupling. We perform neutron scattering measurements to probe the magnetic ground state and excitations over a range of x. We propose a bond-disorder model that reproduces ground states with only short-ranged spin correlations in the mixed compounds. The calculated neutron diffraction patterns and powder spectra agree well with the measured data and allow detailed predictions for future measurements. We conclude that quenched randomness plays the major role in defining the physics of Sr2CuTe1-xWxO6 with frustration being less significant.",

author = "Ellen Fogh and Otto Mustonen and Peter Babkevich and Katukuri, {Vamshi M.} and Walker, {Helen C.} and Lucile Mangin-Thro and Maarit Karppinen and Simon Ward and Bruce Normand and R{\o}nnow, {Henrik M.}",

note = "Funding Information: We thank E. Cussen, A. Sandvik, and O. Yazyev for helpful discussions. This work was funded by the Swiss National Science Foundation, including by its Sinergia networks MPBH (Grant Nos. CRSII2 141962/1 and CRSII2 160765/1) and Nanoskyrmionics (Grant No. 171003), by the European Research Council through the project CONQUEST (Grant No. 259602) and the Synergy network HERO (Grant No. 810451), and by the Leverhulme Trust through Research Project Grant No. RPG-2017-109 and Early Career Fellowship No. ECF-2021-170. We thank the ILL and ISIS for the allocation of beam time for this study. Data collected at both facilities are available as Refs. . Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

year = "2022",

month = may,

day = "12",

doi = "10.1103/PhysRevB.105.184410",

language = "English",

volume = "105",

pages = "1--7",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

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TY - JOUR

T1 - Randomness and frustration in a S= 12 square-lattice Heisenberg antiferromagnet

AU - Fogh, Ellen

AU - Mustonen, Otto

AU - Babkevich, Peter

AU - Katukuri, Vamshi M.

AU - Walker, Helen C.

AU - Mangin-Thro, Lucile

AU - Karppinen, Maarit

AU - Ward, Simon

AU - Normand, Bruce

AU - Rønnow, Henrik M.

N1 - Funding Information: We thank E. Cussen, A. Sandvik, and O. Yazyev for helpful discussions. This work was funded by the Swiss National Science Foundation, including by its Sinergia networks MPBH (Grant Nos. CRSII2 141962/1 and CRSII2 160765/1) and Nanoskyrmionics (Grant No. 171003), by the European Research Council through the project CONQUEST (Grant No. 259602) and the Synergy network HERO (Grant No. 810451), and by the Leverhulme Trust through Research Project Grant No. RPG-2017-109 and Early Career Fellowship No. ECF-2021-170. We thank the ILL and ISIS for the allocation of beam time for this study. Data collected at both facilities are available as Refs. . Publisher Copyright: © 2022 American Physical Society.

PY - 2022/5/12

Y1 - 2022/5/12

N2 - We explore the interplay between randomness and magnetic frustration in the series of S=12 Heisenberg square-lattice compounds Sr2CuTe1-xWxO6. Substituting W for Te alters the magnetic interactions dramatically, from strongly nearest-neighbor to next-nearest-neighbor antiferromagnetic coupling. We perform neutron scattering measurements to probe the magnetic ground state and excitations over a range of x. We propose a bond-disorder model that reproduces ground states with only short-ranged spin correlations in the mixed compounds. The calculated neutron diffraction patterns and powder spectra agree well with the measured data and allow detailed predictions for future measurements. We conclude that quenched randomness plays the major role in defining the physics of Sr2CuTe1-xWxO6 with frustration being less significant.

AB - We explore the interplay between randomness and magnetic frustration in the series of S=12 Heisenberg square-lattice compounds Sr2CuTe1-xWxO6. Substituting W for Te alters the magnetic interactions dramatically, from strongly nearest-neighbor to next-nearest-neighbor antiferromagnetic coupling. We perform neutron scattering measurements to probe the magnetic ground state and excitations over a range of x. We propose a bond-disorder model that reproduces ground states with only short-ranged spin correlations in the mixed compounds. The calculated neutron diffraction patterns and powder spectra agree well with the measured data and allow detailed predictions for future measurements. We conclude that quenched randomness plays the major role in defining the physics of Sr2CuTe1-xWxO6 with frustration being less significant.

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U2 - 10.1103/PhysRevB.105.184410

DO - 10.1103/PhysRevB.105.184410

M3 - Article

AN - SCOPUS:85130376092

SN - 2469-9950

VL - 105

SP - 1

EP - 7

JO - Physical Review B

JF - Physical Review B

IS - 18

M1 - 184410

ER -

Randomness and frustration in a S= 12 square-lattice Heisenberg antiferromagnet

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Tietoaineistot

Inelastic neutron scattering investigation of Sr2CuTeO6

INS study of double perovskite at the border between two and three dimensional magnetism

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