Magnetic structure of the conductive triangular-lattice antiferromagnet PdCrO2

Abstract

We performed neutron single crystal and synchrotron X-ray powder diffraction experiments in order to investigate the magnetic and crystal structures of the conductive layered triangular-lattice antiferromagnet PdCrO2 with a putative spin chirality, which contributes to an unconventional anomalous Hall effect. We revealed that the ground-state magnetic structure is a commensurate and nearly-coplanar 120-degrees spin structure. The 120-degrees plane in different Cr layers seem to tilt with one another, leading to a small noncoplanarity. Such a small but finite non-coplanar stacking of the 120-degrees planes gives rise to a finite scalar spin chirality, which may be responsible for the unconventional nature of the Hall effect of PdCrO2.

Phys. Rev. B 89, 104408 (2014)

References in corpus (6)

• Scalar spin chirality and quantum Hall effect on a triangular lattice
• Unconventional Anomalous Hall Effect in the Metallic Triangular-Lattice Magnet PdCrO2
• Unconventional Dynamics in Triangular Heisenberg Antiferromagnet NaCrO2
• Critical behavior of the metallic triangular-lattice Heisenberg antiferromagnet PdCrO2
• Anomalous Hall Effect in $t_{2g}$ Orbital Kagome Lattice due to Non-collinearity:Significance of Orbital Aharonov-Bohm Effect
• Studies of the Anomalous Hall Effect and Magnetic Structure of Nd2Mo2O7 -Test of the Chirality Mechanism-

Cited by in corpus (4)

• The properties of ultrapure delafossite metals
• Exotic magnetic phases in an Ising-spin Kondo lattice model on a kagome lattice
• Magnetic ground states and magnetodielectric effect in $R$Cr(BO${}_3$)${}_2$ ($R$ = Y and Ho)
• Heisenberg spins on an anisotropic triangular lattice: PdCrO2 under uniaxial stress