Charge-density waves observed with a tunneling microscope

Charge-density waves observed with a tunneling microscope

Charge-density waves on cleaved surfaces of 1 T-TaS2 appeared at 77 K as hexagonal arrays of mounds with spacings of (3.5 + or - 0.3) a0, where a0 = 3.346 A is the lattice spacing of the 1 T-TaS2. In contrast, cleaved surfaces of 2H-TaSe2 at 77 K showed only atoms. The tunneling microscope was opera...

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Veröffentlicht in:Physical review letters 1985-07, Vol.55 (4), p.394-397
Hauptverfasser: COLEMAN, R. V, DRAKE, B, HANSMA, P. K, SLOUGH, G
Format: Artikel
Sprache:eng
Schlagworte:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conductivity phenomena in semiconductors and insulators
Electronic transport in condensed matter
Exact sciences and technology
Low-field transport and mobility
piezoresistance
Physics
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Zusammenfassung:Charge-density waves on cleaved surfaces of 1 T-TaS2 appeared at 77 K as hexagonal arrays of mounds with spacings of (3.5 + or - 0.3) a0, where a0 = 3.346 A is the lattice spacing of the 1 T-TaS2. In contrast, cleaved surfaces of 2H-TaSe2 at 77 K showed only atoms. The tunneling microscope was operated under liquid nitrogen with a Pt(0.8)Ir(0.2) tip for both types of samples.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.55.394