Accession Number:

ADA162373

Title:

Superlattice Effects in Graphite Intercalation Compounds.

Descriptive Note:

Annual rept. 1 Oct 84-30 Sep 85,

Corporate Author:

NORTHEASTERN UNIV BOSTON MASS DEPT OF PHYSICS

Personal Author(s):

Report Date:

1985-10-22

Pagination or Media Count:

30.0

Abstract:

A new kind of two-dimensional, field-induced phase transition has been discovered in Br2 graphite intercalation compounds. Similar to, but much more pronounced than Condon domain formation in three-dimensions, it is a Landau level instability which results in two types of domains having different numbers of Landau levels occupied. The domains display a striking nonlinear dynamics in an a.c. magnetic field, with phenomena including resonance, hysteresis, and a quasiperiodic route to chaos. A theoretical basis for analyzing the data has been developed, and the high frequency resonance appears to be a transverse vibration of the domain array, similar to that predicted for the superconducting intermediate state. Keywords quantum hall effect solitons. Author

Subject Categories:

  • Electricity and Magnetism
  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE