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Energy dispersions of single-crystalline Bi sub 2. 0 Sr sub 1. 8 Ca sub 0. 8 La sub 0. 3 Cu sub 2. 1 O sub 8+. delta. superconductors determined using angle-resolved photoelectron spectroscopy

Journal Article · · Physical Review (Section) B: Condensed Matter; (USA)
; ; ;  [1];  [2]; ;  [3];  [2]
  1. Stanford Electronics Laboratories, Stanford University, Stanford, California 94305 (US)
  2. Department of Applied Physics, Stanford University, Stanford, California 94305
  3. Stanford Electronics Laboratories, Stanford University, Stanford, California 94305
+ Show Author Affiliations

Angle-resolved photoemission studies of single-crystalline La-doped Bi-Sr-Ca-Cu- 90-K superconductors (Bi{sub 2.0}Sr{sub 1.8}Ca{sub 0.8}La{sub 0.3}Cu{sub 2.1}O{sub 8+{delta}}) were performed utilizing synchrotron radiation covering the photon energy range 10--40 eV. The data conclusively reveal a dispersionless character of the valence-band states as a function of the wave-vector component parallel to the {ital c} axis, in agreement with the predictions of band calculations. Band effects are evident from both intensity modulations of the spectral features in the valence band and from energy dispersions as a function of the wave vector component lying in the basal {ital a}-{ital b} plane.

OSTI ID:
5525019
Journal Information:
Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:7; ISSN 0163-1829; ISSN PRBMD
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BAND THEORY
BISMUTH COMPOUNDS
BISMUTH OXIDES
BREMSSTRAHLUNG
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
DISPERSION RELATIONS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTARY PARTICLES
ENERGY RANGE
EV RANGE
EV RANGE 10-100
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MASSLESS PARTICLES
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTONS
RADIATIONS
RARE EARTH COMPOUNDS
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
SYNCHROTRON RADIATION
TRANSITION ELEMENT COMPOUNDS