TY - JOUR
T1 - High-resolution temperature-dependent valence-band photoemission spectroscopy of gold:mNature of electron-phonon coupling
AU - Yokoya, T.
AU - Chainani, A.
AU - Takahashi, T.
PY - 1997/1/1
Y1 - 1997/1/1
N2 - Using high-resolution temperature-dependent (20-400 K) valence-band photoemission spectroscopy, we study the nature of electron-phonon coupling in polycrystalline gold. The valence band shows systematic broadening for increasing temperatures which is well-reproduced by a Gaussian broadening of the 20 K spectrum. It depends linearly on temperature and is found to be excessive (∼9 (Formula presented) T). The results suggest the existence of anharmonic lattice vibrations and a quadratic electron-phonon coupling, similar to the case of aluminum 2p core levels.
AB - Using high-resolution temperature-dependent (20-400 K) valence-band photoemission spectroscopy, we study the nature of electron-phonon coupling in polycrystalline gold. The valence band shows systematic broadening for increasing temperatures which is well-reproduced by a Gaussian broadening of the 20 K spectrum. It depends linearly on temperature and is found to be excessive (∼9 (Formula presented) T). The results suggest the existence of anharmonic lattice vibrations and a quadratic electron-phonon coupling, similar to the case of aluminum 2p core levels.
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U2 - 10.1103/PhysRevB.55.5574
DO - 10.1103/PhysRevB.55.5574
M3 - Article
AN - SCOPUS:0000324332
SN - 0163-1829
VL - 55
SP - 5574
EP - 5577
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 9
ER -