Published October 1, 1995 | Version v1
Journal article Metadata-only

Oxidation state of mercury in HgBa2(Ca0.86Sr0.14)2Cu3O8+δ studied by x-ray photoelectron spectroscopy

Creators

  • 1. Regional Sophisticated Instrumentation Centre, Indian Institute of Technology, Madras 600 036 (India)
  • 2. Korea Research Institute of Standards and Science, Yusong, P.O. Box 102, Taejon 305-600 (Korea, Republic of)

Description

Hg 4f core levels of HgBa2(Ca0.86Sr0.14)2Cu3O8+δ (Hg-1223) and HgO were measured by x-ray photoelectron spectroscopy in order to demonstrate the oxidation state of mercury ions in the superconducting oxide. The binding energy of the Hg 4f7/2 level is found to be at 99.9 eV in HgO and 101.0 and 103.4 eV in Hg-1223. This result reveals that the oxidation state of Hg is definitely more than +2 and it exists in a mixed-valent state. The creation of charge carriers in Hg-1223 is discussed in terms of a charge transfer between Hg-Oδ and Cu-O layers

Additional details

Publishing Information

Journal Title
Physical Review. B, Condensed Matter
Journal Volume
52
Journal Issue
14
Journal Page Range
p. R9879-R9881.
ISSN
0163-1829
CODEN
PRBMDO

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
27058844
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
BARIUM OXIDES; BINDING ENERGY; CALCIUM OXIDES; CHARGE CARRIERS; CUPRATES; ELECTRONIC STRUCTURE; F STATES; HIGH-TC SUPERCONDUCTORS; LATTICE PARAMETERS; MERCURY; MERCURY OXIDES; PHOTOELECTRON SPECTROSCOPY; PRESSURE DEPENDENCE; STRONTIUM OXIDES; TRANSITION TEMPERATURE; VALENCE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRON SPECTROSCOPY; ELEMENTS; ENERGY; ENERGY LEVELS; MERCURY COMPOUNDS; METALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SPECTROSCOPY; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS