FRACTAL CONDUCTANCE FLUCTUATIONS IN A SOFT-WALL STADIUM AND A SINAI BILLIARD

Authors
SACHRAJDA AS KETZMERICK R GOULD C FENG Y KELLY PJ DELAGE A WASILEWSKI Z
Citation
As. Sachrajda et al., FRACTAL CONDUCTANCE FLUCTUATIONS IN A SOFT-WALL STADIUM AND A SINAI BILLIARD, Physical review letters, 80(9), 1998, pp. 1948-1951
Citations number
19
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
9
Year of publication
1998
Pages
1948 - 1951
Database
ISI
SICI code
0031-9007(1998)80:9<1948:FCFIAS>2.0.ZU;2-S
Abstract
Conductance fluctuations have been studied in a soft-wall stadium and a Sinai billiard defined by electrostatic gates on a high mobility sem iconductor heterojunction. These reproducible magnetoconductance fluct uations are found to be fractal, confirming recent theoretical predict ions of quantum signatures in classically mixed (regular and chaotic) systems. The fractal character of the fluctuations provides direct evi dence for a hierarchical phase space structure at the boundary between regular and chaotic motion.