Test for nonreciprocal circular birefringence in YBa sub 2 Cu sub 3 O sub 7 thin films as evidence for broken time-reversal symmetry

Journal Article · Mon Jul 02 00:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.65.123· OSTI ID:6668178

Spielman, S; Fesler, K; Eom, C B; Geballe, T H; Fejer, M M; Kapitulnik, A ^[1]

---

1. Edward L. Ginzton Laboratory Department of Applied Physics, Stanford University, Stanford, California 94305 (USA)

We have measured the amount of nonreciprocal circular birefringence of 50 to 800 A YBa{sub 2}Cu{sub 3}O{sub 7} films in transmission with a 15-{mu}m beam diameter. A novel instrument with a sensitivity of 2 {mu}rad for nonreciprocal phase shifts was developed by modifying a fiber-optic gyroscope. It is insensitive to reciprocal phase shifts. We observed no nonreciprocal phase shifts in any samples.

• OSTI ID: 6668178
• Journal Information: Physical Review Letters; (USA), Vol. 65:1; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
BIREFRINGENCE
COPPER OXIDES
YTTRIUM OXIDES
EXPERIMENTAL DATA
FIBER OPTICS
HIGH-TC SUPERCONDUCTORS
MODIFICATIONS
PHASE SHIFT
SENSITIVITY
SUPERCONDUCTING FILMS
SYMMETRY BREAKING
T INVARIANCE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
DATA
FILMS
INFORMATION
INVARIANCE PRINCIPLES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
REFRACTION
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity