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Title: Electron–electron interactions and the paired-to-nematic quantum phase transition in the second Landau level

Abstract

In spite of its ubiquity in strongly correlated systems, the competition of paired and nematic ground states remains poorly understood. Recently such a competition was reported in the two-dimensional electron gas at filling factor ν = 5/2. At this filling factor a pressure-induced quantum phase transition was observed from the paired fractional quantum Hall state to the quantum Hall nematic. Here we show that the pressure-induced paired-to-nematic transition also develops at ν = 7/2, demonstrating therefore this transition in both spin branches of the second orbital Landau level. However, we find that pressure is not the only parameter controlling this transition. Indeed, ground states consistent with those observed under pressure also develop in a sample measured at ambient pressure, but in which the electron–electron interaction was tuned close to its value at the quantum critical point. Our experiments suggest that electron–electron interactions play a critical role in driving the paired-to-nematic transition.

Authors:
 [1];  [2];  [1];  [1];  [1];  [3];  [3];  [1]
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Purdue Univ., West Lafayette, IN (United States); Delft Univ. of Technology, Delft (Netherlands)
  3. Princeton Univ., Princeton, NJ (United States)
Publication Date:
Research Org.:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1511486
Grant/Contract Number:  
SC0006671; SC0010544
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Schreiber, K. A., Samkharadze, N., Gardner, G. C., Lyanda-Geller, Y., Manfra, M. J., Pfeiffer, L. N., West, K. W., and Csáthy, G. A. Electron–electron interactions and the paired-to-nematic quantum phase transition in the second Landau level. United States: N. p., 2018. Web. doi:10.1038/s41467-018-04879-1.
Schreiber, K. A., Samkharadze, N., Gardner, G. C., Lyanda-Geller, Y., Manfra, M. J., Pfeiffer, L. N., West, K. W., & Csáthy, G. A. Electron–electron interactions and the paired-to-nematic quantum phase transition in the second Landau level. United States. doi:10.1038/s41467-018-04879-1.
Schreiber, K. A., Samkharadze, N., Gardner, G. C., Lyanda-Geller, Y., Manfra, M. J., Pfeiffer, L. N., West, K. W., and Csáthy, G. A. Tue . "Electron–electron interactions and the paired-to-nematic quantum phase transition in the second Landau level". United States. doi:10.1038/s41467-018-04879-1. https://www.osti.gov/servlets/purl/1511486.
@article{osti_1511486,
title = {Electron–electron interactions and the paired-to-nematic quantum phase transition in the second Landau level},
author = {Schreiber, K. A. and Samkharadze, N. and Gardner, G. C. and Lyanda-Geller, Y. and Manfra, M. J. and Pfeiffer, L. N. and West, K. W. and Csáthy, G. A.},
abstractNote = {In spite of its ubiquity in strongly correlated systems, the competition of paired and nematic ground states remains poorly understood. Recently such a competition was reported in the two-dimensional electron gas at filling factor ν = 5/2. At this filling factor a pressure-induced quantum phase transition was observed from the paired fractional quantum Hall state to the quantum Hall nematic. Here we show that the pressure-induced paired-to-nematic transition also develops at ν = 7/2, demonstrating therefore this transition in both spin branches of the second orbital Landau level. However, we find that pressure is not the only parameter controlling this transition. Indeed, ground states consistent with those observed under pressure also develop in a sample measured at ambient pressure, but in which the electron–electron interaction was tuned close to its value at the quantum critical point. Our experiments suggest that electron–electron interactions play a critical role in driving the paired-to-nematic transition.},
doi = {10.1038/s41467-018-04879-1},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {6}
}

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