Incommensurate magnetic ground state revealed by RXS in the frustrated spin system Ca3Co2O6

Abstract

We have performed a resonant x-ray scattering study at the Co pre-K edge on a single crystal of Ca3Co2O6. The measurements reveal an abrupt transition to a magnetically ordered state immediately below T_N = 25 K, with a magnetic correlation length in excess of 5500 Å along the c-axis chains. There is no evidence for modifications to the Co${}^{3+}$ spin state. A temperature dependent modulation in the magnetic order along the c-axis and an unusual decrease in the magnetic correlation lengths on cooling are observed. The results are compatible with the onset of a partially disordered antiferromagnetic structure in Ca3Co2O6.

RevTex 4, 5 pages + 3 figures

References in corpus (3)

• Valence, spin, and orbital state of the Co ions in the one-dimensional Ca3Co2O6: an x-ray absorption and magnetic circular dichroism study
• Nature of magnetism in Ca${}_3$Co${}_2$O${}_6$
• Magnetic structure and phase diagram in a spin-chain system: Ca${}_3$Co${}_2$O${}_6$

Cited by in corpus (10)

• The nature of the magnetic order in Ca3Co2O6
• Slow Magnetic Order-Order Transition in the Spin Chain Antiferromagnet Ca3Co2O6
• Formation of Magnetic Microphases in Ca${}_3$Co${}_2$O${}_6$
• Origin of Ising magnetism in Ca3Co2O6 unveiled by orbital imaging
• Magnetization plateau and incommensurate spin modulation in Ca3Co2O6
• Resonant X-ray scattering investigation of the multipolar ordering in Ca3Co2O6
• Reaching the equilibrium state of frustrated triangular Ising magnet Ca3Co2O6
• Electronic and magnetic properties of a quasi-one-dimensional spin chain system, Sr${}_3$NiRhO${}_6$
• Magnetic field-induced deformation of the spin-density wave microphases in Ca${}_3$Co${}_2$O${}_6$
• Three-dimensional ferrimagnetic ground state of triangular-lattice system Ca3Co2O6