Quantum oscillations and high carrier mobility in the delafossite PdCoO2

Clifford William Hicks; Alexandra Sarah Gibbs; Andrew Mackenzie; Hiroshi Takatsu; Yoshiteru Maeno; Edward Alexander Yelland

doi:10.1103/PhysRevLett.109.116401

Quantum oscillations and high carrier mobility in the delafossite PdCoO₂

Clifford William Hicks, Alexandra Sarah Gibbs, Andrew Mackenzie, Hiroshi Takatsu, Yoshiteru Maeno, Edward Alexander Yelland

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Abstract

We present de Haas-van Alphen and resistivity data on single crystals of the delafossite PdCoO₂. At 295 K we measure an in-plane resistivity of 2.6 μΩcm, making PdCoO₂ the most conductive oxide known. The low-temperature in-plane resistivity has an activated rather than the usual T⁵ temperature dependence, suggesting a gapping of effective scattering that is consistent with phonon drag. Below 10 K, the transport mean free path is ∼20 μm, approximately 10⁵ lattice spacings and an astoundingly high value for flux-grown crystals. We discuss the origin of these properties in light of our data.

Original language	English
Article number	116401
Number of pages	5
Journal	Physical Review Letters
Volume	109
Issue number	11
Early online date	23 Jul 2012
DOIs	https://doi.org/10.1103/PhysRevLett.109.116401
Publication status	Published - Sept 2012

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10.1103/PhysRevLett.109.116401

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title = "Quantum oscillations and high carrier mobility in the delafossite PdCoO2",

abstract = "We present de Haas-van Alphen and resistivity data on single crystals of the delafossite PdCoO2. At 295 K we measure an in-plane resistivity of 2.6 μΩcm, making PdCoO2 the most conductive oxide known. The low-temperature in-plane resistivity has an activated rather than the usual T5 temperature dependence, suggesting a gapping of effective scattering that is consistent with phonon drag. Below 10 K, the transport mean free path is ∼20 μm, approximately 105 lattice spacings and an astoundingly high value for flux-grown crystals. We discuss the origin of these properties in light of our data.",

author = "Hicks, \{Clifford William\} and Gibbs, \{Alexandra Sarah\} and Andrew Mackenzie and Hiroshi Takatsu and Yoshiteru Maeno and Yelland, \{Edward Alexander\}",

year = "2012",

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doi = "10.1103/PhysRevLett.109.116401",

language = "English",

volume = "109",

journal = "Physical Review Letters",

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publisher = "American Physical Society",

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T1 - Quantum oscillations and high carrier mobility in the delafossite PdCoO2

AU - Hicks, Clifford William

AU - Gibbs, Alexandra Sarah

AU - Mackenzie, Andrew

AU - Takatsu, Hiroshi

AU - Maeno, Yoshiteru

AU - Yelland, Edward Alexander

PY - 2012/9

Y1 - 2012/9

N2 - We present de Haas-van Alphen and resistivity data on single crystals of the delafossite PdCoO2. At 295 K we measure an in-plane resistivity of 2.6 μΩcm, making PdCoO2 the most conductive oxide known. The low-temperature in-plane resistivity has an activated rather than the usual T5 temperature dependence, suggesting a gapping of effective scattering that is consistent with phonon drag. Below 10 K, the transport mean free path is ∼20 μm, approximately 105 lattice spacings and an astoundingly high value for flux-grown crystals. We discuss the origin of these properties in light of our data.

AB - We present de Haas-van Alphen and resistivity data on single crystals of the delafossite PdCoO2. At 295 K we measure an in-plane resistivity of 2.6 μΩcm, making PdCoO2 the most conductive oxide known. The low-temperature in-plane resistivity has an activated rather than the usual T5 temperature dependence, suggesting a gapping of effective scattering that is consistent with phonon drag. Below 10 K, the transport mean free path is ∼20 μm, approximately 105 lattice spacings and an astoundingly high value for flux-grown crystals. We discuss the origin of these properties in light of our data.

UR - http://arxiv.org/abs/1207.5402

UR - https://www.scopus.com/pages/publications/84866084322

U2 - 10.1103/PhysRevLett.109.116401

DO - 10.1103/PhysRevLett.109.116401

M3 - Article

SN - 0031-9007

VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

M1 - 116401

ER -

Quantum oscillations and high carrier mobility in the delafossite PdCoO₂

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Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems

Wolfson Research Merit Award (WRMA): Royal Society Wolfson Research Merit Award

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Quantum oscillations and high carrier mobility in the delafossite PdCoO2

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Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems

Wolfson Research Merit Award (WRMA): Royal Society Wolfson Research Merit Award

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Quantum oscillations and high carrier mobility in the delafossite PdCoO₂