TY - JOUR
T1 - Breaking a Bloch-wave interferometer
T2 - Quasiparticle species-specific temperature-dependent nonequilibrium dephasing
AU - Costello, Joseph B.
AU - O'Hara, Seamus D.
AU - Wu, Qile
AU - Jang, Moonsuk
AU - Pfeiffer, Loren N.
AU - West, Ken W.
AU - Sherwin, Mark S.
N1 - Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/11/15
Y1 - 2023/11/15
N2 - Recently, high-order sideband polarimetry has been established as an experimental method that links the polarization of sidebands to an interference of Bloch waves. However, the robustness of sideband polarizations to increasing dephasing remains to be explored. Here, we investigate the dependence of high-order sideband generation in bulk gallium arsenide on dephasing by tuning temperature. We find that the intensities of the sidebands, but not their polarizations, depend strongly on temperature. Using our polarimetry method, we are able to isolate the contributions of electron-heavy hole (HH) and electron-light hole (LH) pairs to sideband intensities, and separately extract the nonequilibrium dephasing coefficients associated with the longitudinal optical (LO) phonons and acoustic (A) phonons for each species of electron-hole pair. We find that ΓHH,A=6.1±1.6μeV/K, ΓLH,A<1.5μeV/K, ΓHH,LO=14±3meV, and ΓLH,LO=30±3meV.
AB - Recently, high-order sideband polarimetry has been established as an experimental method that links the polarization of sidebands to an interference of Bloch waves. However, the robustness of sideband polarizations to increasing dephasing remains to be explored. Here, we investigate the dependence of high-order sideband generation in bulk gallium arsenide on dephasing by tuning temperature. We find that the intensities of the sidebands, but not their polarizations, depend strongly on temperature. Using our polarimetry method, we are able to isolate the contributions of electron-heavy hole (HH) and electron-light hole (LH) pairs to sideband intensities, and separately extract the nonequilibrium dephasing coefficients associated with the longitudinal optical (LO) phonons and acoustic (A) phonons for each species of electron-hole pair. We find that ΓHH,A=6.1±1.6μeV/K, ΓLH,A<1.5μeV/K, ΓHH,LO=14±3meV, and ΓLH,LO=30±3meV.
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U2 - 10.1103/PhysRevB.108.195205
DO - 10.1103/PhysRevB.108.195205
M3 - Article
AN - SCOPUS:85177986051
SN - 2469-9950
VL - 108
JO - Physical Review B
JF - Physical Review B
IS - 19
M1 - 195205
ER -