Anomalous Magnetothermopower in a Metallic Frustrated Antiferromagnet.

@article{Arsenijevi2016AnomalousMI,
  title={Anomalous Magnetothermopower in a Metallic Frustrated Antiferromagnet.},
  author={Stevan Arsenijevi{\'c} and Jong Mok Ok and Peter Robinson and S Ghannadzadeh and Mikhail I. Katsnelson and Jun Sung Kim and Nigel E. Hussey},
  journal={Physical review letters},
  year={2016},
  volume={116 8},
  pages={
          087202
        }
}
We report the temperature T and magnetic field H dependence of the thermopower S of an itinerant triangular antiferromagnet PdCrO_{2} in high magnetic fields up to 32 T. In the paramagnetic phase, the zero-field thermopower is positive with a value typical of good metals with a high carrier density. In marked contrast to typical metals, however, S decreases rapidly with increasing magnetic field, approaching zero at the maximum field scale for T>70  K. We argue here that this profound change in… 
Magnetic frustration and spontaneous rotational symmetry breaking in PdCrO2
In the triangular layered magnet PdCrO2 the intralayer magnetic interactions are strong, however the lattice structure frustrates interlayer interactions. In spite of this, long-range, 120$^\circ$
Hidden Mott insulator in metallic PdCrO2
  • F. Lechermann
  • Materials Science, Physics
    Physical Review Materials
  • 2018
There has been a long-standing debate on the coexistence between itinerant electrons and localized spins in the PdCrO$_2$ delafossite. By means of the charge self-consistent combination of density
Heisenberg spins on an anisotropic triangular lattice: PdCrO2 under uniaxial stress
When Heisenberg spins interact antiferromagnetically on a triangular lattice and nearest-neighbor interactions dominate, the ground state is 120° antiferromagnetism. In this work, we probe the
Probing spin correlations using angle-resolved photoemission in a coupled metallic/Mott insulator system
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PdCrO2 is established as a model system in which to probe Kondo lattice physics and also open new routes to use the a priori nonmagnetic probe of photoemission to gain insights into the spin susceptibility of correlated electron materials.
Evidence for an Fulde-Ferrell-Larkin-Ovchinnikov State with Segmented Vortices in the BCS-BEC-Crossover Superconductor FeSe.
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It is pointed out that strongly orbital-dependent pairing as well as spin-orbit interactions, the multiband nature, and the extremely small Fermi energy are important for the formation of the FFLO state in FeSe.
Simultaneous loss of interlayer coherence and long-range magnetism in quasi-two-dimensional PdCrO2
TLDR
It is shown that a definitive signature of interlayer coherence in the metallic-layered triangular antiferromagnet PdCrO2 vanishes at the Néel transition temperature, and 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.
From basic properties to the Mott design of correlated delafossites
The natural-heterostructure concept realized in delafossites highlights these layered oxides. While metallic, band- or Mott-insulating character may be associated with individual layers, inter-layer
The properties of ultrapure delafossite metals.
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TLDR
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Unconventional aspects of electronic transport in delafossite oxides
TLDR
Several cases where the transport depends on the interlayer coupling and displays unconventional properties are reviewed, including the doped thermoelectrics based on and , which show a high-temperature recovery of Fermi-liquid transport exponents, as well as the highly anisotropic metals.
Pulsed-laser epitaxy of metallic delafossite PdCrO2 films
Alternate stacking of a highly conducting metallic layer with a magnetic triangular layer found in delafossite PdCrO2 provides an excellent platform for discovering intriguing correlated quantum
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