Skip to content
DraconiticResearch
Search Sources API
197,768 studies31 sourcesUpdated 24 min ago
PreprintarXiv licencearXiv

Successive Phase Transitions from a Composite Fermion Liquid to a Fractional Quantum Hall State at ν=3/2 Driven by In-Plane Magnetic Field

  • Xinghao Wang
  • L. N. Pfeiffer
  • A. Gupta
  • K. W. Baldwin
  • K. W. West
  • Rui-Rui Du
Open at sourcePDFDOICite

Abstract

We report an even-denominator fractional quantum Hall state at ν = 3/2 induced entirely by in-plane magnetic field B_|| in an ultra-high-mobility GaAs quantum well. As B_|| increases, the system undergoes two successive transitions: from a composite fermion liquid to a soft-gap FQH state (B_||~12.2 T), then via a topological phase transition to a hard-gap robust FQH state (B_||~14.7 T), accompanied by a daughter state at ν = 19/13. We present systematic data, and discuss a possible scenario in interpreting these findings. Our work demonstrates that topological order may be engineered through k-space Fermi contour splitting under an in-plane magnetic field.

Related

  1. Composite Fermion Theory of Fractional Chern Insulators in Rhombohedral Graphene
    Peize Ding, Andrew J. Millis, Yongxin Zeng
    arXivPreprintarXiv licenceFull textCondensed matterarXiv
  2. The Halperin (111) state as a paired composite-fermion wave function: Two exact finite-size identities on the sphere
    Glenn Wagner
    arXivPreprintarXiv licenceFull textCondensed matterarXiv
  3. Search for free non-Abelian anyons in paired composite-fermion states
    Mytraya Gattu, J. K. Jain
    arXivPreprintCC BY 4.0Full textCondensed matterarXiv
  4. A Unified Spin-Fermion Framework for Magnetic Diversity in Chromium Monopnictides
    Ruoshi Jiang, Bartomeu Monserrat
    arXivPreprintCC BY 4.0Full textCondensed matterarXiv
  5. Fractional Chern insulators and composite Fermi liquids vs. charge order in twisted MoTe2
    Enrique Aguilar-Méndez, Glenn Wagner
    arXivPreprintCC BY 4.0Full textCondensed matterarXiv

Cite

BibTeXRIS
BibTeX
@misc{wang2026successive,
  title = {{Successive Phase Transitions from a Composite Fermion Liquid to a Fractional Quantum Hall State at ν=3/2 Driven by In-Plane Magnetic Field}},
  author = {Xinghao Wang and L. N. Pfeiffer and A. Gupta and K. W. Baldwin and K. W. West and Rui-Rui Du},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.08141},
  eprint = {2609.08141},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.08141},
}
RIS
TY  - UNPB
TI  - Successive Phase Transitions from a Composite Fermion Liquid to a Fractional Quantum Hall State at ν=3/2 Driven by In-Plane Magnetic Field
AU  - Xinghao Wang
AU  - L. N. Pfeiffer
AU  - A. Gupta
AU  - K. W. Baldwin
AU  - K. W. West
AU  - Rui-Rui Du
PY  - 2026
DA  - 2026/09/09
PB  - arXiv
DO  - 10.48550/arxiv.2609.08141
UR  - https://arxiv.org/abs/2609.08141
AB  - We report an even-denominator fractional quantum Hall state at ν = 3/2 induced entirely by in-plane magnetic field B_|| in an ultra-high-mobility GaAs quantum well. As B_|| increases, the system undergoes two successive transitions: from a composite fermion liquid to a soft-gap FQH state (B_||~12.2 T), then via a topological phase transition to a hard-gap robust FQH state (B_||~14.7 T), accompanied by a daughter state at ν = 19/13. We present systematic data, and discuss a possible scenario in interpreting these findings. Our work demonstrates that topological order may be engineered through k-space Fermi contour splitting under an in-plane magnetic field.
ER  -