期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.186401
关键词
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资金
- NSF [PHY11-25915, DMR-0748925]
- DARPA-QuEST program
- Gordon and Betty Moore Foundation [GBMF2719]
- National Science Foundation at the Princeton Center for Complex Materials [MRSEC-DMR-0819860]
- Direct For Mathematical & Physical Scien [0748925] Funding Source: National Science Foundation
- Division Of Materials Research [0748925] Funding Source: National Science Foundation
We show that the resistance of the v = 5/2 quantum Hall state, confined to an interferometer, oscillates with the magnetic field consistent with an Ising-type non-Abelian state. In three quantum Hall interferometers of different sizes, resistance oscillations at v = 7/3 and integer filling factors have the magnetic field period expected if the number of quasiparticles contained within the interferometer changes so as to keep the area and the total charge within the interferometer constant. Under these conditions, an Abelian state such as the (3, 3, 1) state would show oscillations with the same period as at an integer quantum Hall state. However, in an Ising-type non-Abelian state there would be a rapid oscillation associated with the even-odd effect and a slower one associated with the accumulated Abelian phase due to both the Aharonov-Bohm effect and the Abelian part of the quasiparticle braiding statistics. Our measurements at v = 5/2 are consistent with the latter.
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