Electron-phonon coupling in M n1-x F exSi

Nazir Khan; O. De La Peña-Seaman; Rolf Heid; David Voneshen; Ayman H. Said; Andreas Bauer; Tobias Konrad; Michael Merz; Thomas Wolf; C. Pfleiderer; Frank Weber

doi:10.1103/PhysRevB.109.184306

Electron-phonon coupling in M n1-x F exSi

Nazir Khan, O. De La Peña-Seaman, Rolf Heid, David Voneshen, Ayman H. Said, Andreas Bauer, Tobias Konrad, Michael Merz, Thomas Wolf, C. Pfleiderer, Frank Weber

Chair of Experimental Physics on the Topology of Correlated Systems

Research output: Contribution to journal › Article › peer-review

Abstract

We present a study of the lattice dynamical properties of Mn1-xFexSi with 0≤x≤0.22. Employing time-of-flight neutron spectroscopy and inelastic x-ray scattering, we investigate the doping dependence of phonon energies, Eph, and linewidths, Γph. We find anomalous softening and broadening of a phonon mode propagating along the [111] direction. Ab initio lattice dynamical calculations link this softening to an enhanced electron-phonon coupling due to the doping-dependent changes of the Fermi surface. We discuss an interplay of increased electron-phonon coupling and reduced ordered magnetic moments in Mn1-xFexSi.

Original language	English
Article number	184306
Journal	Physical Review B
Volume	109
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.109.184306
State	Published - 1 May 2024

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10.1103/PhysRevB.109.184306

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title = "Electron-phonon coupling in M n1-x F exSi",

abstract = "We present a study of the lattice dynamical properties of Mn1-xFexSi with 0≤x≤0.22. Employing time-of-flight neutron spectroscopy and inelastic x-ray scattering, we investigate the doping dependence of phonon energies, Eph, and linewidths, Γph. We find anomalous softening and broadening of a phonon mode propagating along the [111] direction. Ab initio lattice dynamical calculations link this softening to an enhanced electron-phonon coupling due to the doping-dependent changes of the Fermi surface. We discuss an interplay of increased electron-phonon coupling and reduced ordered magnetic moments in Mn1-xFexSi.",

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T1 - Electron-phonon coupling in M n1-x F exSi

AU - Khan, Nazir

AU - De La Peña-Seaman, O.

AU - Heid, Rolf

AU - Voneshen, David

AU - Said, Ayman H.

AU - Bauer, Andreas

AU - Konrad, Tobias

AU - Merz, Michael

AU - Wolf, Thomas

AU - Pfleiderer, C.

AU - Weber, Frank

PY - 2024/5/1

Y1 - 2024/5/1

N2 - We present a study of the lattice dynamical properties of Mn1-xFexSi with 0≤x≤0.22. Employing time-of-flight neutron spectroscopy and inelastic x-ray scattering, we investigate the doping dependence of phonon energies, Eph, and linewidths, Γph. We find anomalous softening and broadening of a phonon mode propagating along the [111] direction. Ab initio lattice dynamical calculations link this softening to an enhanced electron-phonon coupling due to the doping-dependent changes of the Fermi surface. We discuss an interplay of increased electron-phonon coupling and reduced ordered magnetic moments in Mn1-xFexSi.

AB - We present a study of the lattice dynamical properties of Mn1-xFexSi with 0≤x≤0.22. Employing time-of-flight neutron spectroscopy and inelastic x-ray scattering, we investigate the doping dependence of phonon energies, Eph, and linewidths, Γph. We find anomalous softening and broadening of a phonon mode propagating along the [111] direction. Ab initio lattice dynamical calculations link this softening to an enhanced electron-phonon coupling due to the doping-dependent changes of the Fermi surface. We discuss an interplay of increased electron-phonon coupling and reduced ordered magnetic moments in Mn1-xFexSi.

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DO - 10.1103/PhysRevB.109.184306

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VL - 109

JO - Physical Review B

JF - Physical Review B

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ER -

Electron-phonon coupling in M n1-x F exSi

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