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Title: Implications of the electron-phonon coupling in CuPb 9 ( PO 4 ) 6 O for superconductivity: An ab initio study

Journal Article · · Physical Review Materials
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]
  1. Univ. of Iowa, Iowa City, IA (United States); Ames Lab., and Iowa State Univ., Ames, IA (United States)
  2. Univ. of Iowa, Iowa City, IA (United States); Eindhoven Univ. of Technology (Netherlands)
  3. Ames Lab., and Iowa State Univ., Ames, IA (United States)

Here we report ab initio calculations of the electronic and vibrational properties in CuPb9 (PO4)6O, including the electron-phonon coupling strength via strong-coupling Migdal-Eliashberg theory. We verify the presence of appealing flat electronic bands near the Fermi level, a strong hybridization between the Cu 3d and O 2p states, and soft low-energy phonons, which can suggest high-temperature superconducting behavior. However, the electron-phonon coupling strength appears insufficient to overcome the Coulomb repulsion between an electron pair and thus does not support high-temperature superconductivity in CuPb9 (PO4)6O via the conventional electron-phonon Migdal-Eliashberg mechanism. Even neglecting Coulomb repulsion of the electron pair we find this electron-phonon coupling suggests a superconducting transition temperature of less than 2 K.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE
Grant/Contract Number:
SC0016379; AC02-07CH11358
OSTI ID:
2282322
Alternate ID(s):
OSTI ID: 2474230
Report Number(s):
IS-J-11,241; TRN: US2408642
Journal Information:
Physical Review Materials, Vol. 8, Issue 1; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (34)

Generalized Gradient Approximation Made Simple journal October 1996
The PseudoDojo: Training and grading a 85 element optimized norm-conserving pseudopotential table journal May 2018
Superconductivity at 39 K in magnesium diboride journal March 2001
Transition temperature of strong-coupled superconductors reanalyzed journal August 1975
Pb10−x Cu x (PO4)6O: a Mott or charge transfer insulator in need of further doping for (super)conductivity journal November 2023
FermiSurfer: Fermi-surface viewer providing multiple representation schemes journal June 2019
A perspective on conventional high-temperature superconductors at high pressure: Methods and materials journal April 2020
Phonons and related crystal properties from density-functional perturbation theory journal July 2001
Development of ex situ processed MgB2 wires and their applications to magnets journal June 2007
Semiconducting Transport in Pb10−XCux(PO4)6O Sintered from Pb2SO5 and Cu3P journal September 2023
Synthesis of possible room temperature superconductor LK-99: Pb9Cu(PO4)6O journal August 2023
Special points for Brillouin-zone integrations journal June 1976
Anomalously high value of Coulomb pseudopotential for the H5S2 superconductor journal August 2018
First-principles study on the electronic structure of Pb10−Cu (PO4)6O (x = 0, 1) journal February 2024
Wannier90 as a community code: new features and applications journal January 2020
Anisotropic Migdal-Eliashberg theory using Wannier functions journal January 2013
Electron–phonon physics from first principles using the EPW code journal August 2023
Origin of Superconductivity and Latent Charge Density Wave in NbS 2 journal August 2017
Theory of Superconducting Tc book January 1983
Absence of Superconductivity in LK-99 at Ambient Conditions journal October 2023
The 2021 Room-Temperature Superconductivity Roadmap journal September 2021
EPW: Electron–phonon coupling, transport and superconducting properties using maximally localized Wannier functions journal December 2016
Conventional superconductivity at 203 kelvin at high pressures in the sulfur hydride system journal August 2015
Metallization and spin fluctuations in Cu-doped lead apatite journal November 2023
Superconductivity and topological properties of MgB2 -type diborides from first principles journal October 2021
Electron-phonon coupling and spin fluctuations in the Ising superconductor NbSe2 journal April 2023
High-precision sampling for Brillouin-zone integration in metals journal August 1989
Evidence for Superconductivity above 260 K in Lanthanum Superhydride at Megabar Pressures journal January 2019
Crystal chemistry of lead oxide phosphates: crystal structures of Pb4O(PO4)2, Pb8O5(PO4)2 and Pb10(PO4)6O journal May 2003
Superconducting materials: Challenges and opportunities for large-scale applications journal June 2021
Electronic structure of the putative room-temperature superconductor Pb9Cu(PO4)6O journal September 2023
Recent Development of ${\rm MgB}_{2}$-Based Large Scale Applications journal June 2007
Superconductivity up to 243 K in the yttrium-hydrogen system under high pressure journal August 2021
Advanced capabilities for materials modelling with Quantum ESPRESSO journal October 2017