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Title: Direct Measurement of Anharmonic Decay Channels of a Coherent Phonon

Abstract

In this paper, we report channel-resolved measurements of the anharmonic coupling of the coherent $${A}_{1g}$$ phonon in photoexcited bismuth to pairs of high wave vector acoustic phonons. The decay of a coherent phonon can be understood as a parametric resonance process whereby the atomic displacement periodically modulates the frequency of a broad continuum of modes. This coupling drives temporal oscillations in the phonon mean-square displacements at the $${A}_{1g}$$ frequency that are observed across the Brillouin zone by femtosecond x-ray diffuse scattering. Finally, we extract anharmonic coupling constants between the $${A}_{1g}$$ and several representative decay channels that are within an order of magnitude of density functional perturbation theory calculations.

Authors:
 [1];  [2];  [3];  [2];  [4];  [5];  [5];  [5];  [6];  [7];  [7];  [8];  [8];  [1];  [9]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford PULSE Inst. Stanford Inst. for Materials and Energy Sciences
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford PULSE Inst.; Stanford Univ., CA (United States). Dept. of Physics
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford PULSE Inst.; Stanford Univ., CA (United States). Dept. of Applied Physics
  4. Stanford Univ., CA (United States). Dept. of Physics; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford PULSE Inst.
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
  6. Imperial College London (United Kingdom). Dept. of Physics. Dept. of Materials
  7. Tyndall National Inst., Cork (Ireland); Univ. College Cork (Ireland). Dept. of Physics
  8. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics
  9. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford PULSE Inst. Stanford Inst. for Materials and Energy Sciences; Stanford Univ., CA (United States). Dept. of Applied Physics. Dept. of Photon Science
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States); Tyndall National Inst., Cork (Ireland); Univ. College Cork (Ireland)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Science Foundation Ireland (SFI); Irish Research Council
OSTI Identifier:
1475393
Alternate Identifier(s):
OSTI ID: 1471767
Grant/Contract Number:  
AC02-76SF00515; SC0008574; 12/IA/1601; GOIPG/2015/2784
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 12; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; anharmonic lattice dynamics; electron-phonon coupling; thermal conductivity; ultrafast pump-probe spectroscopy; X-ray scattering

Citation Formats

Teitelbaum, Samuel W., Henighan, Thomas, Huang, Yijing, Liu, Hanzhe, Jiang, Mason P., Zhu, Diling, Chollet, Matthieu, Sato, Takahiro, Murray, Éamonn D., Fahy, Stephen, O’Mahony, Shane, Bailey, Trevor P., Uher, Ctirad, Trigo, Mariano, and Reis, David A. Direct Measurement of Anharmonic Decay Channels of a Coherent Phonon. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.121.125901.
Teitelbaum, Samuel W., Henighan, Thomas, Huang, Yijing, Liu, Hanzhe, Jiang, Mason P., Zhu, Diling, Chollet, Matthieu, Sato, Takahiro, Murray, Éamonn D., Fahy, Stephen, O’Mahony, Shane, Bailey, Trevor P., Uher, Ctirad, Trigo, Mariano, & Reis, David A. Direct Measurement of Anharmonic Decay Channels of a Coherent Phonon. United States. doi:10.1103/PhysRevLett.121.125901.
Teitelbaum, Samuel W., Henighan, Thomas, Huang, Yijing, Liu, Hanzhe, Jiang, Mason P., Zhu, Diling, Chollet, Matthieu, Sato, Takahiro, Murray, Éamonn D., Fahy, Stephen, O’Mahony, Shane, Bailey, Trevor P., Uher, Ctirad, Trigo, Mariano, and Reis, David A. Thu . "Direct Measurement of Anharmonic Decay Channels of a Coherent Phonon". United States. doi:10.1103/PhysRevLett.121.125901. https://www.osti.gov/servlets/purl/1475393.
@article{osti_1475393,
title = {Direct Measurement of Anharmonic Decay Channels of a Coherent Phonon},
author = {Teitelbaum, Samuel W. and Henighan, Thomas and Huang, Yijing and Liu, Hanzhe and Jiang, Mason P. and Zhu, Diling and Chollet, Matthieu and Sato, Takahiro and Murray, Éamonn D. and Fahy, Stephen and O’Mahony, Shane and Bailey, Trevor P. and Uher, Ctirad and Trigo, Mariano and Reis, David A.},
abstractNote = {In this paper, we report channel-resolved measurements of the anharmonic coupling of the coherent ${A}_{1g}$ phonon in photoexcited bismuth to pairs of high wave vector acoustic phonons. The decay of a coherent phonon can be understood as a parametric resonance process whereby the atomic displacement periodically modulates the frequency of a broad continuum of modes. This coupling drives temporal oscillations in the phonon mean-square displacements at the ${A}_{1g}$ frequency that are observed across the Brillouin zone by femtosecond x-ray diffuse scattering. Finally, we extract anharmonic coupling constants between the ${A}_{1g}$ and several representative decay channels that are within an order of magnitude of density functional perturbation theory calculations.},
doi = {10.1103/PhysRevLett.121.125901},
journal = {Physical Review Letters},
number = 12,
volume = 121,
place = {United States},
year = {2018},
month = {9}
}

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