Perfect separation of intraband and interband excitations in PdCoO2

Homes, C. C.; Khim, S.; Mackenzie, Andy P.

doi:10.1103/PhysRevB.99.195127

Title: Perfect separation of intraband and interband excitations in ${PdCoO}_{2}$

Abstract

The temperature dependence of the optical properties of the delafossite PdCoO₂ has been measured in the a-b planes over a wide frequency range. The optical conductivity due to the free-carrier (intraband) response falls well below the interband transitions, allowing the plasma frequency to be determined from the f-sum rule. Drude-Lorentz fits to the complex optical conductivity yield estimates for the free-carrier plasma frequency and scattering rate. Here, the in-plane plasma frequency has also been calculated using density functional theory. The experimentally determined and calculated values for the plasma frequencies are all in good agreement; however, at low temperature the optically determined scattering rate is much larger than the estimate for the transport scattering rate, indicating a strong frequency-dependent renormalization of the optical scattering rate. In addition to the expected in-plane infrared-active modes, two very strong features are observed that are attributed to the coupling of the in-plane carriers to the out-of-plane longitudinal optic modes.

Authors:

^[1]; Khim, S. ^[2]; Mackenzie, Andy P. ^[3]

Brookhaven National Lab. (BNL), Upton, NY (United States)
Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)
Max Planck Institute for Chemical Physics of Solids, Dresden (Germany); Univ. of St. Andrews, St. Andrews (United Kingdom)

Publication Date:: Wed May 15 00:00:00 EDT 2019

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1514493

Alternate Identifier(s):: OSTI ID: 1512821

Report Number(s):: BNL-211620-2019-JAAM
Journal ID: ISSN 2469-9950; PRBMDO

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 99; Journal Issue: 19; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Homes, C. C., Khim, S., and Mackenzie, Andy P. Perfect separation of intraband and interband excitations in PdCoO2.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevB.99.195127.

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                    Homes, C. C., Khim, S., & Mackenzie, Andy P. Perfect separation of intraband and interband excitations in PdCoO2.  United States.  https://doi.org/10.1103/PhysRevB.99.195127

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                    Homes, C. C., Khim, S., and Mackenzie, Andy P. Wed .  
"Perfect separation of intraband and interband excitations in PdCoO2".  United States.  https://doi.org/10.1103/PhysRevB.99.195127.  https://www.osti.gov/servlets/purl/1514493.

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@article{osti_1514493,

  title        = {Perfect separation of intraband and interband excitations in PdCoO2},

  author       = {Homes, C. C. and Khim, S. and Mackenzie, Andy P.},

  abstractNote = {The temperature dependence of the optical properties of the delafossite PdCoO2 has been measured in the a-b planes over a wide frequency range. The optical conductivity due to the free-carrier (intraband) response falls well below the interband transitions, allowing the plasma frequency to be determined from the f-sum rule. Drude-Lorentz fits to the complex optical conductivity yield estimates for the free-carrier plasma frequency and scattering rate. Here, the in-plane plasma frequency has also been calculated using density functional theory. The experimentally determined and calculated values for the plasma frequencies are all in good agreement; however, at low temperature the optically determined scattering rate is much larger than the estimate for the transport scattering rate, indicating a strong frequency-dependent renormalization of the optical scattering rate. In addition to the expected in-plane infrared-active modes, two very strong features are observed that are attributed to the coupling of the in-plane carriers to the out-of-plane longitudinal optic modes.},

  doi          = {10.1103/PhysRevB.99.195127},

  journal      = {Physical Review B},

  number       = 19,

  volume       = 99,

  place        = {United States},

  year         = {Wed May 15 00:00:00 EDT 2019},

  month        = {Wed May 15 00:00:00 EDT 2019}

}

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Title: Perfect separation of intraband and interband excitations in PdCoO 2

Abstract

Citation Formats

Ground-state properties of lanthanum: Treatment of extended-core states journal, March 1991

Universality of the Mott–Ioffe–Regel limit in metals journal, September 2004

Growth and Anisotropic Physical Properties of PdCoO 2 Single Crystals journal, December 1996

Electrons go with the flow in exotic material systems journal, March 2016

The role of phonon–phonon and electron–phonon scattering in thermal transport in PdCoO 2 journal, January 2017

Roles of High-Frequency Optical Phonons in the Physical Properties of the Conductive Delafossite PdCoO 2 journal, October 2007

FeTe 0.55 Se 0.45 : A multiband superconductor in the clean and dirty limit journal, April 2015

Fermi surface and surface electronic structure of delafossite PdCoO 2 journal, July 2009

The properties of ultrapure delafossite metals journal, January 2017

Unconventional Anomalous Hall Effect in the Metallic Triangular-Lattice Magnet PdCrO 2 journal, September 2010

VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data journal, October 2011

Technique for measuring the reflectance of irregular, submillimeter-sized samples journal, January 1993

Electrodynamics of correlated electron matter journal, July 2006

Quantum Oscillations and High Carrier Mobility in the Delafossite PdCoO 2 journal, September 2012

Superconductivity in Bad Metals journal, April 1995

First principles study of structural, bonding and vibrational properties of PtCoO2, PdCoO2 and PdRhO2 metallic delafossites journal, February 2013

Chemistry of noble metal oxides. I. Syntheses and properties of ABO2 delafossite compounds journal, April 1971

Evidence for a - b -plane coupling to longitudinal c -axis phonons in high- T c superconductors journal, November 1992

On the Metallic Conductivity of the Delafossites PdCoO 2 and PtCoO 2 journal, March 2008

Linear optical properties of solids within the full-potential linearized augmented planewave method journal, July 2006

Origin of anisotropy and metallic behavior in delafossite PdCoO 2 journal, March 2010

Electrodynamics of high- T c superconductors journal, August 2005

Metal−Metal Bonding and Metallic Behavior in Some ABO 2 Delafossites journal, August 1998

Anisotropic Electric Conductivity of Delafossite PdCoO 2 Studied by Angle-Resolved Photoemission Spectroscopy journal, June 2009

Evidence for hydrodynamic electron flow in PdCoO2 journal, February 2016

Title: Perfect separation of intraband and interband excitations in ${PdCoO}_{2}$

Ground-state properties of lanthanum: Treatment of extended-core states
journal, March 1991

Universality of the Mott–Ioffe–Regel limit in metals
journal, September 2004

Growth and Anisotropic Physical Properties of PdCoO ₂ Single Crystals
journal, December 1996

Electrons go with the flow in exotic material systems
journal, March 2016

The role of phonon–phonon and electron–phonon scattering in thermal transport in PdCoO ₂
journal, January 2017

Roles of High-Frequency Optical Phonons in the Physical Properties of the Conductive Delafossite PdCoO ₂
journal, October 2007

${FeTe}_{0.55} {Se}_{0.45}$ : A multiband superconductor in the clean and dirty limit
journal, April 2015

Fermi surface and surface electronic structure of delafossite ${PdCoO}_{2}$
journal, July 2009

The properties of ultrapure delafossite metals
journal, January 2017

Unconventional Anomalous Hall Effect in the Metallic Triangular-Lattice Magnet ${PdCrO}_{2}$
journal, September 2010

VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data
journal, October 2011

Technique for measuring the reflectance of irregular, submillimeter-sized samples
journal, January 1993

Electrodynamics of correlated electron matter
journal, July 2006

Quantum Oscillations and High Carrier Mobility in the Delafossite ${PdCoO}_{2}$
journal, September 2012

Superconductivity in Bad Metals
journal, April 1995

First principles study of structural, bonding and vibrational properties of PtCoO2, PdCoO2 and PdRhO2 metallic delafossites
journal, February 2013

Chemistry of noble metal oxides. I. Syntheses and properties of ABO2 delafossite compounds
journal, April 1971

Evidence for a - b -plane coupling to longitudinal c -axis phonons in high- $T_{c}$ superconductors
journal, November 1992

On the Metallic Conductivity of the Delafossites PdCoO ₂ and PtCoO ₂
journal, March 2008

Linear optical properties of solids within the full-potential linearized augmented planewave method
journal, July 2006

Origin of anisotropy and metallic behavior in delafossite ${PdCoO}_{2}$
journal, March 2010

Electrodynamics of high- $T_{c}$ superconductors
journal, August 2005

Metal−Metal Bonding and Metallic Behavior in Some ABO ₂ Delafossites
journal, August 1998

Anisotropic Electric Conductivity of Delafossite ${PdCoO}_{2}$ Studied by Angle-Resolved Photoemission Spectroscopy
journal, June 2009

Evidence for hydrodynamic electron flow in PdCoO2
journal, February 2016