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Spin dynamics of the director state in frustrated hyperkagome systems

Jacobsen, Henrik (author)
Köpenhamns universitet,University of Copenhagen,European Spallation Source (ESS),Paul Scherrer Institut,University Of Oxford,Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland.;Univ Oxford, Dept Phys, Oxford OX1 3PU, England.;Univ Copenhagen, Niels Bohr Inst, Nanosci Ctr, DK-2100 Copenhagen O, Denmark.;European Spallat Source, Tunavagen 24, S-22363 Lund, Sweden.
Florea, Ovidiu (author)
Université Grenoble Alpes,Grenoble Alpes University,Centre national de la recherche scientifique (CNRS),CNRS, Inst Neel, F-38000 Grenoble, France.;Univ Grenoble Alpes, F-38000 Grenoble, France.
Lhotel, Elsa (author)
Université Grenoble Alpes,Grenoble Alpes University,Centre national de la recherche scientifique (CNRS),CNRS, Inst Neel, F-38000 Grenoble, France.;Univ Grenoble Alpes, F-38000 Grenoble, France.
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Lefmann, Kim (author)
Köpenhamns universitet,University of Copenhagen,Univ Copenhagen, Niels Bohr Inst, Nanosci Ctr, DK-2100 Copenhagen O, Denmark.
Petrenko, Oleg A. (author)
The University of Warwick,Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
Knee, Christopher, 1973 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Seydel, Tilo (author)
Institut Laue-Langevin,Inst Laue Langevin, 71 Ave Martyrs,BP156, F-38042 Grenoble 9, France.
Henry, Paul, 1972 (author)
Uppsala universitet,Oorganisk kemi,European Spallat Source, Tunavagen 24, S-22363 Lund, Sweden.;Chalmers Univ Technol, Dept Chem & Biol Engn, SE-41296 Gothenburg, Sweden.;Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.
Bewley, Robert (author)
STFC Rutherford Appleton Laboratory,Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.
Voneshen, David (author)
STFC Rutherford Appleton Laboratory,Royal Holloway University of London,Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.;Royal Holloway Univ London, 13Department Phys, Egham TW20 0EX, Surrey, England.
Wildes, Andrew (author)
Institut Laue-Langevin,Inst Laue Langevin, 71 Ave Martyrs,BP156, F-38042 Grenoble 9, France.
Nilsen, Goran (author)
STFC Rutherford Appleton Laboratory,Institut Laue-Langevin,Inst Laue Langevin, 71 Ave Martyrs,BP156, F-38042 Grenoble 9, France.;Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.
Deen, Pascale P. (author)
Köpenhamns universitet,University of Copenhagen,European Spallation Source (ESS),Univ Copenhagen, Niels Bohr Inst, Nanosci Ctr, DK-2100 Copenhagen O, Denmark.;European Spallat Source, Tunavagen 24, S-22363 Lund, Sweden.
Knee, Chris S. (author)
Chalmers Univ Technol, Dept Chem & Biol Engn, SE-41296 Gothenburg, Sweden.;ESAB AB, Lindholmsallen 9,Box 8004, SE-40277 Gothenburg, Sweden.
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 (creator_code:org_t)
American Physical Society, 2021
2021
English.
In: Physical Review B. - : American Physical Society. - 2469-9969 .- 2469-9950. ; 104:5
Related links:
https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We present an experimental study of the magnetic structure and dynamics of two frustrated hyperkagome compounds, Gd3Ga5O12 and Gd3Al5O12. It has previously been shown that Gd3Ga5O12 exhibits long-range correlations of multipolar directors that are formed from antiferromagnetic spins on loops of ten ions. Using neutron diffraction and reverse Monte Carlo simulations we prove the existence of similar magnetic correlations in Gd3Al5O12, showing the ubiquity of these complex structures in frustrated hyperkagome materials. Using inelastic neutron scattering we shed further light on the director state and the associated low-lying magnetic excitations. In addition, we have measured quasielastic dynamics that show evidence of spin diffusion. Finally, we present AC susceptibility measurements on both Gd3Ga5O12 and Gd3Al5O12, revealing a large difference in the low-frequency dynamics between the two otherwise similar compounds.

Subject headings

NATURVETENSKAP  -- Kemi -- Oorganisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
NATURVETENSKAP  -- Fysik -- Annan fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Other Physics Topics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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