Scanning tunneling microscopy and tunneling spectroscopy of n-type iron pyrite (n-FeS sub 2 ) single crystals

Journal Article · Thu Mar 07 00:00:00 EST 1991 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100158a016· OSTI ID:5531475

Fan, Furen; Bard, A J ^[1]

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1. Univ. of Texas, Austin (USA)

The (001) surface of a highly doped (>2.7 {times} 10{sup 18} cm{sup {minus}3}) n-type FeS{sub 2} crystal was imaged by the constant current mode in air with a scanning tunneling microscopy (STM). Current (i) images at different bias voltages (V) were also obtained. Tunneling spectroscopy (TS) was carried out, and i vs V and di/dV vs V curves obtained with the tip held above the FeS{sub 2} surface were interpreted in terms of the band locations and a localized state within the band gap. The effect of band bending in the semiconductor on the interpretation of the TS results is also considered.

• OSTI ID: 5531475
• Journal Information: Journal of Physical Chemistry; (USA), Vol. 95:5; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PYRITE
SCANNING ELECTRON MICROSCOPY
DATA ANALYSIS
EXPERIMENTAL DATA
GRADED BAND GAPS
MONOCRYSTALS
SEMICONDUCTOR MATERIALS
SURFACE PROPERTIES
CHALCOGENIDES
CRYSTALS
DATA
ELECTRON MICROSCOPY
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MICROSCOPY
MINERALS
NUMERICAL DATA
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360602* - Other Materials- Structure & Phase Studies