TY - JOUR
T1 - Unrestricted Electron Bunching at the Helical Edge
AU - Kurilovich, Pavel D.
AU - Kurilovich, Vladislav D.
AU - Burmistrov, Igor S.
AU - Gefen, Yuval
AU - Goldstein, Moshe
N1 - Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/7/31
Y1 - 2019/7/31
N2 - A quantum magnetic impurity of spin S at the edge of a two-dimensional time reversal invariant topological insulator may give rise to backscattering. We study here the shot noise associated with the backscattering current for arbitrary S. Our full analytical solution reveals that for S>12 the Fano factor may be arbitrarily large, reflecting bunching of large batches of electrons. By contrast, we rigorously prove that for S=12 the Fano factor is bounded between 1 and 2, generalizing earlier studies.
AB - A quantum magnetic impurity of spin S at the edge of a two-dimensional time reversal invariant topological insulator may give rise to backscattering. We study here the shot noise associated with the backscattering current for arbitrary S. Our full analytical solution reveals that for S>12 the Fano factor may be arbitrarily large, reflecting bunching of large batches of electrons. By contrast, we rigorously prove that for S=12 the Fano factor is bounded between 1 and 2, generalizing earlier studies.
UR - http://www.scopus.com/inward/record.url?scp=85070319442&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.123.056803
DO - 10.1103/PhysRevLett.123.056803
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:85070319442
VL - 123
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 5
M1 - 056803
ER -