Simultaneous loss of interlayer coherence and long-range magnetism in quasi-two-dimensional PdCrO2
Simultaneous loss of interlayer coherence and long-range magnetism in quasi-two-dimensional PdCrO2
Ghannadzadeh, S.; Licciardello, S.; Arsenijevic, S.; Robinson, P.; Takatsu, H.; Katsnelson, M. I.; Hussey, N. E.
Abstract
In many layered metals, coherent propagation of electronic excitations is often confined to the highly conducting planes. While strong electron correlations and/or proximity to an ordered phase are believed to be the drivers of this electron confinement, it is still not known what triggers the loss of interlayer coherence in a number of layered systems with strong magnetic fluctuations, such as cuprates. Here, we show that a definitive signature of interlayer coherence in the metallic-layered triangular antiferromagnet PdCrO2 vanishes at the Néel transition temperature. Comparison with the relevant energy scales and with the isostructural non-magnetic PdCoO2 reveals that the interlayer incoherence is driven by the growth of short-range magnetic fluctuations. This establishes a connection between long-range order and interlayer coherence in PdCrO2 and suggests that in many other low-dimensional conductors, incoherent interlayer transport also arises from the strong interaction between the (tunnelling) electrons and fluctuations of some underlying order.
Beteiligte Forschungsanlagen
- Hochfeld-Magnetlabor (HLD)
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Nature Communications 8(2017), 15001
DOI: 10.1038/ncomms15001
Cited 12 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-25468