| Issue |
Europhys. Lett.
Volume 35, Number 3, July 1996
|
|
|---|---|---|
| Page(s) | 227 - 232 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00559-8 | |
| Published online | 01 September 2002 | |
Sideways tunnelling and fractional Josephson frequency in double-layered quantum Hall systems
1
Department of Physics, Massachusetts Institute of Technology,
77 Massachusetts Avenue, Cambridge, MA 02139, USA
2
Institute for Theoretical Physics,
University of California, Santa Barbara, CA 93106, USA
Received:
6
June
1994
Accepted:
11
June
1996
The filling fraction 1/k
double-layered quantum Hall state has been shown to exhibit
many superfluid properties. Here we propose the notion of
“sideways tunnelling", in which a current tunnels between two such
1/k states through an incompressible fractional
quantum Hall state of filling fraction 2/m.
We predict an alternating tunnelling current or a narrow-band noise at
a frequency 
, as a consequence of
the tunnelling of
e/m fractional charges.
PACS: 73.40.-c – Electronic transport in interface structures.
© EDP Sciences, 1996
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