Higgs mode and its decay in a two-dimensional antiferromagnet

J 2017

Higgs mode and its decay in a two-dimensional antiferromagnet

JAIN, A.; M. KRAUTLOHER; J. PORRAS; G.H. RYU; D.P. CHEN et al.

Základní údaje

Originální název

Higgs mode and its decay in a two-dimensional antiferromagnet

Autoři

JAIN, A.; M. KRAUTLOHER; J. PORRAS; G.H. RYU; D.P. CHEN; D.L. ABERNATHY; J.T. PARK; A. IVANOV; Jiří CHALOUPKA; G. KHALIULLIN; B. KEIMER a B.J. KIM

Vydání

Nature Physics, London, Nature Publishing Group, 2017, 1745-2473

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 22.727

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/17:00094849

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

quantum magnetism; spin systems; spin-orbit coupling; condensate; spin excitations

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 21. 3. 2018 15:40, doc. Mgr. Jiří Chaloupka, Ph.D.

Anotace

V originále

Condensed-matter analogues of the Higgs boson in particle physics allow insights into its behaviour in different symmetries and dimensionalities(1). Evidence for the Higgs mode has been reported in a number of different settings, including ultracold atomic gases(2), disordered superconductors(3), and dimerized quantum magnets(4). However, decay processes of the Higgsmode(which are eminently important in particlephysics) have not yet been studied in condensed matter due to the lack of a suitable material system coupled to a direct experimental probe. A quantitative understanding of these processes is particularly important for low-dimensional systems, where the Higgs mode decays rapidly and has remained elusive to most experimental probes. Here, we discover and study the Higgs mode in a two-dimensional antiferromagnet using spin-polarized inelastic neutron scattering. Our spin-wave spectra of Ca2RuO4 directly reveal a well-defined, dispersive Higgs mode, which quickly decays into transverse Goldstone modes at the antiferromagnetic ordering wavevector. Through a complete mapping of the transverse modes in the reciprocal space, we uniquely specify the minimal model Hamiltonian and describe the decay process. We thus establish a novel condensed-matter platform for research on the dynamics of the Higgs mode.

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

JAIN, A.; M. KRAUTLOHER; J. PORRAS; G.H. RYU; D.P. CHEN; D.L. ABERNATHY; J.T. PARK; A. IVANOV; Jiří CHALOUPKA; G. KHALIULLIN; B. KEIMER a B.J. KIM. Higgs mode and its decay in a two-dimensional antiferromagnet. Nature Physics. London: Nature Publishing Group, 2017, roč. 13, č. 7, s. 633-637, 6 s. ISSN 1745-2473. Dostupné z: https://doi.org/10.1038/NPHYS4077.

@article{1385984,
   author = {Jain, A. and Krautloher, M. and Porras, J. and Ryu, G.H. and Chen, D.P. and Abernathy, D.L. and Park, J.T. and Ivanov, A. and Chaloupka, Jiří and Khaliullin, G. and Keimer, B. and Kim, B.J.},
   article_location = {London},
   article_number = {7},
   doi = {https://doi.org/10.1038/NPHYS4077},
   keywords = {quantum magnetism; spin systems; spin-orbit coupling; condensate; spin excitations},
   language = {eng},
   issn = {1745-2473},
   journal = {Nature Physics},
   title = {Higgs mode and its decay in a two-dimensional antiferromagnet},
   url = {http://www.nature.com/nphys/journal/v13/n7/full/nphys4077.html},
   volume = {13},
   year = {2017}
}

TY  - JOUR
ID  - 1385984
AU  - Jain, A. - Krautloher, M. - Porras, J. - Ryu, G.H. - Chen, D.P. - Abernathy, D.L. - Park, J.T. - Ivanov, A. - Chaloupka, Jiří - Khaliullin, G. - Keimer, B. - Kim, B.J.
PY  - 2017
TI  - Higgs mode and its decay in a two-dimensional antiferromagnet
JF  - Nature Physics
VL  - 13
IS  - 7
SP  - 633-637
EP  - 633-637
PB  - Nature Publishing Group
SN  - 17452473
KW  - quantum magnetism
KW  - spin systems
KW  - spin-orbit coupling
KW  - condensate
KW  - spin excitations
UR  - http://www.nature.com/nphys/journal/v13/n7/full/nphys4077.html
L2  - http://www.nature.com/nphys/journal/v13/n7/full/nphys4077.html
N2  - Condensed-matter analogues of the Higgs boson in particle physics allow insights into its behaviour in different symmetries and dimensionalities(1). Evidence for the Higgs mode has been reported in a number of different settings, including ultracold atomic gases(2), disordered superconductors(3), and dimerized quantum magnets(4). However, decay processes of the Higgsmode(which are eminently important in particlephysics) have not yet been studied in condensed matter due to the lack of a suitable material system coupled to a direct experimental probe. A quantitative understanding of these processes is particularly important for low-dimensional systems, where the Higgs mode decays rapidly and has remained elusive to most experimental probes. Here, we discover and study the Higgs mode in a two-dimensional antiferromagnet using spin-polarized inelastic neutron scattering. Our spin-wave spectra of Ca2RuO4 directly reveal a well-defined, dispersive Higgs mode, which quickly decays into transverse Goldstone modes at the antiferromagnetic ordering wavevector. Through a complete mapping of the transverse modes in the reciprocal space, we uniquely specify the minimal model Hamiltonian and describe the decay process. We thus establish a novel condensed-matter platform for research on the dynamics of the Higgs mode.
ER  -

JAIN, A.; M. KRAUTLOHER; J. PORRAS; G.H. RYU; D.P. CHEN; D.L. ABERNATHY; J.T. PARK; A. IVANOV; Jiří CHALOUPKA; G. KHALIULLIN; B. KEIMER a B.J. KIM. Higgs mode and its decay in a two-dimensional antiferromagnet. \textit{Nature Physics}. London: Nature Publishing Group, 2017, roč.~13, č.~7, s.~633-637, 6 s. ISSN~1745-2473. Dostupné z: https://doi.org/10.1038/NPHYS4077.

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