Macroscopic signature of protected spins in a dense frustrated magnet

Abstract

The inability of systems of interacting objects to satisfy all constraints simultaneously leads to frustration. A particularly important consequence of frustration is the ability to access certain protected parts of a system without disturbing the others. For magnets such "protectorates" have been inferred from theory and from neutron scattering, but their practical consequences have been unclear. We show that a magnetic analogue of optical hole-burning can address these protected spin clusters in a well-known, geometrically frustrated Heisenberg system, gadolinium gallium garnet. Our measurements additionally provide a resolution of a famous discrepancy between the bulk magnetometry and neutron diffraction results for this magnetic compound.

References in corpus (11)

• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Emergent excitations in a geometrically frustrated magnet
• Ferromagnetism in the Hubbard Model-- Examples from Models with Degenerate Single-Electron Ground States
• Topologically protected quantum bits from Josephson junction arrays
• Direct measurement of antiferromagnetic domain fluctuations
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• Exact eigenstates and macroscopic magnetization jumps in strongly frustrated spin lattices
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• Lattice gas description of pyrochlore and checkerboard antiferromagnets in a strong magnetic field
• Mesoscopic quantum coherence in antiferromagnetic molecular clusters
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Cited by in corpus (14)

• Dynamics in many-body localized quantum systems without disorder
• Dynamics and Transport at the Threshold of Many-Body Localization
• Semi-classical spin dynamics of the antiferromagnetic Heisenberg model on the kagome lattice
• Juxtaposition of Spin Freezing and Long Range Order in a Series of Geometrically Frustrated Antiferromagnetic Gadolinium Garnets
• Dispersionless spin waves in Gadolinium Gallium Garnet
• Updating the phase diagram of the archetypal frustrated magnet Gd3Ga5O12
• Probing short-range magnetic order in a geometrically frustrated magnet by spin Seebeck effect
• Resolving magnetic frustration in a pyrochlore lattice
• Domain Wall Spin Dynamics in Kagome Antiferromagnets
• Anisotropic phase diagram and spin fluctuations of the hyperkagome magnet Gd3Ga5O12 as revealed by sound velocity measurements
• Antiferromagnetism and Ising Ground States in the Rare-earth Garnet Nd${}_3$Ga${}_5$O${}_{12}$
• Model of the low temperature magnetic phases of gadolinium gallium garnet
• Spin dynamics of the director state in frustrated hyperkagome systems
• Interplay of disorder and geometrical frustration in doped Gadolinium Gallium Garnet