Short-range correlations in the magnetic ground state of Na4Ir3O8.
Phys Rev Lett
; 113(24): 247601, 2014 Dec 12.
Article
en En
| MEDLINE
| ID: mdl-25541804
ABSTRACT
The magnetic ground state of the J(eff)=1/2 hyperkagome lattice in Na4Ir3O8 is explored via combined bulk magnetization, muon spin relaxation, and neutron scattering measurements. A short-range, frozen state comprised of quasistatic moments develops below a characteristic temperature of T(F)=6 K, revealing an inhomogeneous distribution of spins occupying the entirety of the sample volume. Quasistatic, short-range spin correlations persist until at least 20 mK and differ substantially from the nominally dynamic response of a quantum spin liquid. Our data demonstrate that an inhomogeneous magnetic ground state arises in Na4Ir3O8 driven either by disorder inherent to the creation of the hyperkagome lattice itself or stabilized via quantum fluctuations.
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01-internacional
Base de datos:
MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2014
Tipo del documento:
Article
País de afiliación:
Estados Unidos