Two-level systems in electron-irradiated quartz

Journal Article · Tue Jul 15 00:00:00 EDT 1986 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.34.1405· OSTI ID:5533883

Laermans, C; Vanelstraete, A

The longitudinal ultrasonic attenuation in electron-irradiated crystalline quartz (dose of 1.0 x 10/sup 20/ e/cm/sup 20/, E-italic = 2 MeV) was measured in the temperature range 1.4--300 K, at a frequency of 640 MHz. The data show conclusive evidence for the existence of two-level systems, similar to those in glasses. A relaxation attenuation is observed, giving rise to a T-italic/sup 3/ behavior at the lowest temperatures that levels off to a shoulder at about 10 K. The derived density of states is smaller than that in vitreous silica.

• Research Organization: Department of Physics, Katholieke Universiteit Leuven, Laboratorium voor Vaste Stof-en Hoge Druk-Fysika, Celestijnenlaan 200 D, 3030 Leuven, Belgium
• OSTI ID: 5533883
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 34:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
QUARTZ
PHYSICAL RADIATION EFFECTS
ATTENUATION
ELECTRONS
ENERGY-LEVEL DENSITY
LOW TEMPERATURE
MEDIUM TEMPERATURE
MHZ RANGE 100-1000
TEMPERATURE DEPENDENCE
ULTRALOW TEMPERATURE
ULTRASONIC WAVES
VERY LOW TEMPERATURE
CHALCOGENIDES
ELEMENTARY PARTICLES
FERMIONS
FREQUENCY RANGE
LEPTONS
MHZ RANGE
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
RADIATION EFFECTS
SILICON COMPOUNDS
SILICON OXIDES
SOUND WAVES
360605* - Materials- Radiation Effects