期刊
PHYSICAL REVIEW B
卷 87, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.125147
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资金
- Simons Foundation [229736]
- NSF [DMR-1005434]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1005434] Funding Source: National Science Foundation
Motivated by the potential chiral spin liquid in the metallic spin ice Pr2Ir2O7, we consider how such a chiral state might be selected from the spin-ice manifold. We propose that chiral fluctuations of the conducting Ir moments promote ferrochiral couplings between the local Pr moments, as a chiral analog of the magnetic RKKY effect. Pr2Ir2O7 provides an ideal setting to explore such a chiral RKKY effect, given the inherent chirality of the spin-ice manifold. We use a slave-rotor calculation on the pyrochlore lattice to estimate the sign and magnitude of the chiral coupling, and find it can easily explain the 1.5 K transition to a ferrochiral state. DOI: 10.1103/PhysRevB.87.125147
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