Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session E07: Fractional Quantum Hall 1
8:00 AM–11:00 AM,
Tuesday, March 6, 2018
LACC Room: 153B
Sponsoring Unit: DCMP
Chair: Michael Zudov, University of Minnesota
Abstract: E07.00013 : 3/2 fractional quantum Hall plateau in a single layer two-dimensional electron gas*
10:48 AM–11:00 AM
(Beijing Normal Univ)
In a single layer two-dimensional electron gas, we observed a new even-denominator fractional quantum Hall plateau quantized at (h/e^2 )/(3/2) under confinement, at a bulk filling factor of 5/3. This unexpected plateau develops below 300 mK with a quantization of 0.02%. The conductance transmitting through the confined region is also quantized at 3/2 e^2/h, and the conductance of 1/6 e^2/h is backscattered. A new elemental excitation with e/6 effective charge, the further fractionalization of the e/3 quasi-particles, through topological soliton and topological phase transition is proposed as a tentative explanation.
*The work was funded by NBRPC (2015CB921101, 2015CB921102), NSFC (11674009, 11274020, 11322435, 11534001), Gordon and Betty Moore Foundation (GBMF4420), National Science Foundation MRSEC (DMR-1420541), Keck Foundation.
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