Phase diagram of interacting composite fermions in the bilayer v = 2/3 quantum Hall effect

N. Kumada; D. Terasawa; Y. Shimoda; H. Azuhata; A. Sawada; Z. F. Ezawa; K. Muraki; T. Saku; Y. Hirayama

Phase diagram of interacting composite fermions in the bilayer v = 2/3 quantum Hall effect

N. Kumada, D. Terasawa, Y. Shimoda, H. Azuhata, A. Sawada, Z. F. Ezawa, K. Muraki, T. Saku, Y. Hirayama

Center for Science and Innovation in Spintronics (CSIS)

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

A study was conducted on the phase diagram of bilayer v=2/3. As such, three different quantum Hall (QH) ground states and two types of hysteresis were identified. While the noninteracting composite fermion (CF) model provides a qualitative account of the phase diagram, the observed renormalization of tunneling gap, Δ_SAS, indicates that the exchange interactions between CFs were nontrivial.

Original language	English
Article number	116802
Pages (from-to)	116802/1-116802/4
Journal	Physical Review Letters
Volume	89
Issue number	11
Publication status	Published - 2002 Sept 9

Cite this

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abstract = "A study was conducted on the phase diagram of bilayer v=2/3. As such, three different quantum Hall (QH) ground states and two types of hysteresis were identified. While the noninteracting composite fermion (CF) model provides a qualitative account of the phase diagram, the observed renormalization of tunneling gap, ΔSAS, indicates that the exchange interactions between CFs were nontrivial.",

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AU - Kumada, N.

AU - Terasawa, D.

AU - Shimoda, Y.

AU - Azuhata, H.

AU - Sawada, A.

AU - Ezawa, Z. F.

AU - Muraki, K.

AU - Saku, T.

AU - Hirayama, Y.

PY - 2002/9/9

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N2 - A study was conducted on the phase diagram of bilayer v=2/3. As such, three different quantum Hall (QH) ground states and two types of hysteresis were identified. While the noninteracting composite fermion (CF) model provides a qualitative account of the phase diagram, the observed renormalization of tunneling gap, ΔSAS, indicates that the exchange interactions between CFs were nontrivial.

AB - A study was conducted on the phase diagram of bilayer v=2/3. As such, three different quantum Hall (QH) ground states and two types of hysteresis were identified. While the noninteracting composite fermion (CF) model provides a qualitative account of the phase diagram, the observed renormalization of tunneling gap, ΔSAS, indicates that the exchange interactions between CFs were nontrivial.

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Phase diagram of interacting composite fermions in the bilayer v = 2/3 quantum Hall effect

Abstract

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