TY - JOUR
T1 - Spin Mode Switching at the Edge of a Quantum Hall System
AU - Khanna, Udit
AU - Murthy, Ganpathy
AU - Rao, Sumathi
AU - Gefen, Yuval
N1 - Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/11/2
Y1 - 2017/11/2
N2 - Quantum Hall states can be characterized by their chiral edge modes. Upon softening the edge potential, the edge has long been known to undergo spontaneous reconstruction driven by charging effects. In this Letter we demonstrate a qualitatively distinct phenomenon driven by exchange effects, in which the ordering of the edge modes at ν=3 switches abruptly as the edge potential is made softer, while the ordering in the bulk remains intact. We demonstrate that this phenomenon is robust, and has many verifiable experimental signatures in transport.
AB - Quantum Hall states can be characterized by their chiral edge modes. Upon softening the edge potential, the edge has long been known to undergo spontaneous reconstruction driven by charging effects. In this Letter we demonstrate a qualitatively distinct phenomenon driven by exchange effects, in which the ordering of the edge modes at ν=3 switches abruptly as the edge potential is made softer, while the ordering in the bulk remains intact. We demonstrate that this phenomenon is robust, and has many verifiable experimental signatures in transport.
UR - http://www.scopus.com/inward/record.url?scp=85032789648&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.119.186804
DO - 10.1103/PhysRevLett.119.186804
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C2 - 29219609
AN - SCOPUS:85032789648
SN - 0031-9007
VL - 119
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 186804
ER -