Effects of high magnetic fields on charge-density waves in NbSe sub 3
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (USA)
- Department of Physics, University of California, Berkeley, Berkeley, California 94720 Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (USA)
The magnetotransport properties of NbSe{sub 3} in the temperature range below the second charge-density-wave (CDW) onset of 59 K have been studied in magnetic fields up to 230 kG. At liquid-helium temperatures giant magnetoquantum oscillations caused by magnetic breakdown (MB) between the normal Fermi surface (FS) and open orbits on the nested sheets of the FS dominate the magnetotransport and are extremely sensitive to the pinned CDW configuration. Spatial variations in the phase of the pinned CDW change the local Fermi level and CDW gap, giving rise to a distribution of FS cross-sectional areas. These variations in FS cross section and CDW gap produce frequency shifts, amplitude modulations, and beat structures in the quantum oscillations observed in both the magnetoresistance and Hall effect. A model conductivity tensor has been developed describing the open-orbit network and MB interference as well as the closed-orbit contribution. The adjustable parameters of the model are the frequency of oscillation, the frequency-distribution spread {Delta}{ital F}, and critical MB parameter {omega}{sub 0}{tau}.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 7171257
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:1; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Magnetoquantum oscillations, magnetic breakdown, and Fermi-surface modifications in NbSe/sub 3/
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Magnetotransport and Fermi-surface modification in NbSe(sub 3)
Journal Article
·
Sat Oct 31 23:00:00 EST 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:5680351
Fermi surface modifications and magnetic breakdown connected to charge-density waves in NbSe/sub 3/
Conference
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Wed Jul 01 00:00:00 EDT 1987
·
OSTI ID:6391782
Magnetotransport and Fermi-surface modification in NbSe(sub 3)
Thesis/Dissertation
·
Sat Dec 31 23:00:00 EST 1988
·
OSTI ID:6109843
Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
FERMI LEVEL
HALL EFFECT
MAGNETIC FIELDS
MAGNETORESISTANCE
NIOBIUM COMPOUNDS
NIOBIUM SELENIDES
OSCILLATIONS
PHYSICAL PROPERTIES
PLASMA WAVES
REFRACTORY METAL COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
360603* -- Materials-- Properties
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
FERMI LEVEL
HALL EFFECT
MAGNETIC FIELDS
MAGNETORESISTANCE
NIOBIUM COMPOUNDS
NIOBIUM SELENIDES
OSCILLATIONS
PHYSICAL PROPERTIES
PLASMA WAVES
REFRACTORY METAL COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE