Impurity-induced modulations in Pd{sub {ital x}}NbSe{sub 3} coupled to charge-density-wave formation

Journal Article · Mon Jan 01 04:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.53.1068· OSTI ID:282061

Xue, Q; Gong, Y; Drake, D L; Qian, J; Coleman, R V ^[1]

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1. Physics Department, University of Virginia, Charlottesville, Virginia 22901 (United States)

Very dilute amounts of Pd in Pd{sub {ital x}}NbSe{sub 3} introduce long-range electronic modulations of wavelength 7{ital b}{sub 0}, 4{ital b}{sub 0}, 3{ital b}{sub 0}, and 2{ital b}{sub 0} at room temperature as the Pd concentration increases in the range {ital x}=0.002 to {ital x}=0.02 while the low-temperature charge-density waves (CDW{close_quote}s) initially remain unchanged. For {ital x}{ge}0.02 the low-temperature CDW{close_quote}s are quenched while the NbSe{sub 3} structure remains intact, and the high-temperature modulations disappear, indicating a clear correlation between the two effects. The magnetoquantum oscillations due to magnetic breakdown first detect the band-structure shift followed by the sudden quenching of the nested Fermi surface sheets. The atomic force microscope scans show substantial charge transfer between chains caused by the Pd doping. {copyright} {ital 1996 The American Physical Society.}

• DOE Contract Number: FG05-84ER45072
• OSTI ID: 282061
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 3 Vol. 53; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BAND THEORY
CHARGE TRANSPORT
ELECTRIC CONDUCTIVITY
ELECTRON DENSITY
ELECTRONIC STRUCTURE
FERMI LEVEL
MAGNETORESISTANCE
MICROSCOPY
MODULATION
NIOBIUM SELENIDES
PALLADIUM ADDITIONS
SUBSTOICHIOMETRY
TEMPERATURE DEPENDENCE