Momentum distribution sum rule for angle-resolved photoemission

Journal Article · Mon Jun 12 04:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.74.4951· OSTI ID:69309

Randeria, M; Jennings, G ^[1]; Ding, H; Campuzano, J ^[1]; Bellman, A ^[1]; Yokoya, T; Takahashi, T; Katayama-Yoshida, H ^[2]; Mochiku, T; Kadowaki, K ^[3]

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1. Materials Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Department of Physics, Tohoku University, 980 Sendai (Japan)
3. National Research Institute for Metals, Sengen, Tsukuba, Ibaraki 305 (Japan)

Within a spectral function {ital A}(k,{omega}) interpretation of angle-resolved photoemission (ARPES), the intensity obeys the sum rule {integral}{ital d}{omega}{ital f}({omega}){ital A}(k,{omega})={ital n}(k), where {ital f} is the Fermi function and {ital n}(k) the momentum distribution. We show the usefulness of this sum rule for analyzing ARPES data. The integrated intensity in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} {ital at} k{sub {ital F}} is independent of temperature even though the spectrum is strongly {ital T} dependent. We also demonstrate the possibility of measuring {ital n}(k) using ARPES for YBa{sub 2}Cu{sub 4}O{sub 8}.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 69309
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 24 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ANGULAR DISTRIBUTION
DATA ANALYSIS
ELECTRONIC STRUCTURE
FERMI LEVEL
HIGH-TC SUPERCONDUCTORS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
SPECTRAL FUNCTIONS
SUM RULES
TEMPERATURE DEPENDENCE