Raman Scattering from Higgs Mode Oscillations in the
Two-Dimensional Antiferromagnet Ca2RuO4

J 2017

Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4

SOULIOU, S.M., Jiří CHALOUPKA, G. KHALIULLIN, G. RYU, A. JAIN et. al.

Základní údaje

Originální název

Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4

Autoři

SOULIOU, S.M. (300 Řecko), Jiří CHALOUPKA (203 Česká republika, garant, domácí), G. KHALIULLIN (643 Rusko), G. RYU (410 Korejská republika), A. JAIN (356 Indie), B.J. KIM (410 Korejská republika), M. LE TACON (250 Francie) a B. KEIMER (276 Německo)

Vydání

Physical Review Letters, COLLEGE PK, MD USA, The Americal Physical Society, 2017, 0031-9007

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 8.839

Kód RIV

RIV/00216224:14310/17:00095388

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1103/PhysRevLett.119.067201

UT WoS

000407100100014

Klíčová slova anglicky

ruthenates; Raman scattering; magnetic model; magnon; amplitude mode

Štítky

NZ, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 4. 2018 11:04, Ing. Nicole Zrilić

Anotace

V originále

We present and analyze Raman spectra of the Mott insulator Ca2RuO4, whose quasi-two-dimensional antiferromagnetic order has been described as a condensate of low-lying spin-orbit excitons with angular momentum J(eff) = 1. In the A(g) polarization geometry, the amplitude (Higgs) mode of the spin-orbit condensate is directly probed in the scalar channel, thus avoiding infrared-singular magnon contributions. In the B-1g geometry, we observe a single-magnon peak as well as two-magnon and two-Higgs excitations. Model calculations using exact diagonalization quantitatively agree with the observations. Together with recent neutron scattering data, our study provides strong evidence for excitonic magnetism in Ca2RuO4 and points out new perspectives for research on the Higgs mode in two dimensions.

Návaznosti

GJ15-14523Y, projekt VaV

Název: Mikroskopické modely magnetismu supravodivých pniktidů železa a vrstevnatých oxidů iridia

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

Citovat

SOULIOU, S.M., Jiří CHALOUPKA, G. KHALIULLIN, G. RYU, A. JAIN, B.J. KIM, M. LE TACON a B. KEIMER. Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4. Physical Review Letters. COLLEGE PK, MD USA: The Americal Physical Society, 2017, roč. 119, č. 6, s. "067201-1"-"067201-5", 5 s. ISSN 0031-9007. Dostupné z: https://dx.doi.org/10.1103/PhysRevLett.119.067201.

@article{1403072,
   author = {Souliou, S.M. and Chaloupka, Jiří and Khaliullin, G. and Ryu, G. and Jain, A. and Kim, B.J. and Le Tacon, M. and Keimer, B.},
   article_location = {COLLEGE PK, MD USA},
   article_number = {6},
   doi = {http://dx.doi.org/10.1103/PhysRevLett.119.067201},
   keywords = {ruthenates; Raman scattering; magnetic model; magnon; amplitude mode},
   language = {eng},
   issn = {0031-9007},
   journal = {Physical Review Letters},
   title = {Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4},
   url = {https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.067201},
   volume = {119},
   year = {2017}
}

TY  - JOUR
ID  - 1403072
AU  - Souliou, S.M. - Chaloupka, Jiří - Khaliullin, G. - Ryu, G. - Jain, A. - Kim, B.J. - Le Tacon, M. - Keimer, B.
PY  - 2017
TI  - Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4
JF  - Physical Review Letters
VL  - 119
IS  - 6
SP  - "067201-1"-"067201-5"
EP  - "067201-1"-"067201-5"
PB  - The Americal Physical Society
SN  - 00319007
KW  - ruthenates
KW  - Raman scattering
KW  - magnetic model
KW  - magnon
KW  - amplitude mode
UR  - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.067201
L2  - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.067201
N2  - We present and analyze Raman spectra of the Mott insulator Ca2RuO4, whose quasi-two-dimensional antiferromagnetic order has been described as a condensate of low-lying spin-orbit excitons with angular momentum J(eff) = 1. In the A(g) polarization geometry, the amplitude (Higgs) mode of the spin-orbit condensate is directly probed in the scalar channel, thus avoiding infrared-singular magnon contributions. In the B-1g geometry, we observe a single-magnon peak as well as two-magnon and two-Higgs excitations. Model calculations using exact diagonalization quantitatively agree with the observations. Together with recent neutron scattering data, our study provides strong evidence for excitonic magnetism in Ca2RuO4 and points out new perspectives for research on the Higgs mode in two dimensions.
ER  -

SOULIOU, S.M., Jiří CHALOUPKA, G. KHALIULLIN, G. RYU, A. JAIN, B.J. KIM, M. LE TACON a B. KEIMER. Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4. \textit{Physical Review Letters}. COLLEGE PK, MD USA: The Americal Physical Society, 2017, roč.~119, č.~6, s.~''067201-1''-''067201-5'', 5 s. ISSN~0031-9007. Dostupné z: https://dx.doi.org/10.1103/PhysRevLett.119.067201.

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