Proliferation of neutral modes in fractional quantum Hall states

• Published in: Nature communications Vol. 5; no. 1; p. 4067
• Main Authors: Inoue, Hiroyuki, Grivnin, Anna, Ronen, Yuval, Heiblum, Moty, Umansky, Vladimir, Mahalu, Diana
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 06.06.2014; Nature Publishing Group
• Subjects: 142/126; 639/766/119/2794; 639/766/25; Humanities and Social Sciences; multidisciplinary; Science; Science (multidisciplinary)

The fractional quantum Hall effect is a canonical example of topological phases. While electric currents flow downstream in edge modes, neutral edge modes, observed only in hole-conjugate states and in ν =5/2, flow upstream. It is believed that the latter transport results from multiple counter-prop...