title: Simultaneous loss of interlayer coherence and long-range magnetism in quasi-two-dimensional PdCrO2.
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 PdCrO2vanishes at the Néel transition temperature. Comparison with the relevant energy scales and with the isostructural non-magnetic PdCoO2reveals 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 PdCrO2and 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.
authors.affiliation: High Field Magnet Laboratory (HFML-EMFL), Faculty of Science, Radboud University, Toernooiveld 7, 6525ED Nijmegen, The Netherlands.|Institute of Molecules and Materials, Faculty of Science, Radboud University, 6525 AJ Nijmegen, The Netherlands.|Oxford Instruments NanoScience, Tubney Woods, Abingdon, Oxfordshire OX13 5QX, UK.
authors.forename: S
authors.identifier: 0000-0001-6488-9433
authors.initials: S
authors.lastname: Ghannadzadeh
authors.affiliation: High Field Magnet Laboratory (HFML-EMFL), Faculty of Science, Radboud University, Toernooiveld 7, 6525ED Nijmegen, The Netherlands.|Institute of Molecules and Materials, Faculty of Science, Radboud University, 6525 AJ Nijmegen, The Netherlands.
authors.forename: S
authors.initials: S
authors.lastname: Licciardello
authors.affiliation: High Field Magnet Laboratory (HFML-EMFL), Faculty of Science, Radboud University, Toernooiveld 7, 6525ED Nijmegen, The Netherlands.|Institute of Molecules and Materials, Faculty of Science, Radboud University, 6525 AJ Nijmegen, The Netherlands.|Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Arsenijević
authors.affiliation: High Field Magnet Laboratory (HFML-EMFL), Faculty of Science, Radboud University, Toernooiveld 7, 6525ED Nijmegen, The Netherlands.|Institute of Molecules and Materials, Faculty of Science, Radboud University, 6525 AJ Nijmegen, The Netherlands.
authors.forename: P
authors.initials: P
authors.lastname: Robinson
authors.affiliation: Department of Physics, Tokyo Metropolitan University, Tokyo 192-0397, Japan.|Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Takatsu
authors.affiliation: Institute of Molecules and Materials, Faculty of Science, Radboud University, 6525 AJ Nijmegen, The Netherlands.
authors.forename: M I
authors.initials: MI
authors.lastname: Katsnelson
authors.affiliation: High Field Magnet Laboratory (HFML-EMFL), Faculty of Science, Radboud University, Toernooiveld 7, 6525ED Nijmegen, The Netherlands.|Institute of Molecules and Materials, Faculty of Science, Radboud University, 6525 AJ Nijmegen, The Netherlands.
authors.forename: N E
authors.initials: NE
authors.lastname: Hussey