Photoemission study of the surface electronic structure of Mo(001) and Mo(001)-2H

Journal Article · Mon Jun 15 04:00:00 EDT 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.13642· OSTI ID:7040661

Smith, K E; Kevan, S D ^[1]

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1. Department of Physics, University of Oregon, Eugene, Oregon 97403 (United States)

We report a high-resolution angle-resolved photoemission study of the surface electronic structure of the room-temperature phase of Mo(001) and Mo(001)-2H. We have focused particularly upon the electron states on the clean surface within a few electron volts of the Fermi level in an attempt to characterize the interplay between the electronic and atomic structures of this surface. We relate these measurements of the surface band structure along the high-symmetry directions to recently published surface Fermi contours. Most importantly, we observe a band to be located at or near the Fermi level over a small region of momentum space, near the middle of the {Sigma} line. This feature is well placed to couple to phonon modes characteristic of the low-temperature reconstruction observed on this surface. The relationship of these results to existing calculations, to our previous results for W(001), to the wave vector of the reconstruction, and to recent measurements of surface phonon dispersion relations will be discussed.

• DOE Contract Number: FG06-86ER45275
• OSTI ID: 7040661
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:23; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION
ENERGY LEVELS
FERMI LEVEL
HYDROGEN ADDITIONS
METALS
MOLYBDENUM
PHONONS
PHOTOEMISSION
QUASI PARTICLES
SECONDARY EMISSION
SURFACE PROPERTIES
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENTS