Abstract

Interactions between the constituents of a condensed matter system can drive it through a plethora of different phases due to many-body effects. A prominent platform for it is a dilute two-dimensional electron system in a magnetic field, which evolves intricately through various gaseous, liquid and solid phases governed by Coulomb interaction. Here we report on the experimental observation of a phase transition between the composite fermion liquid and adjacent magnetic field induced phase with a character of Wigner solid. The experiments are performed in the lowest Landau level of a MgZnO/ZnO two-dimensional electron system with attributes of both a liquid and a solid. An in-plane magnetic field component applied on top of the perpendicular magnetic field extends the Wigner-like phase further into the composite fermion liquid phase region. Our observations indicate the direct competition between a composite fermion liquid and a Wigner solid formed either by electrons or composite fermions.

Details

Title
Composite fermion liquid to Wigner solid transition in the lowest Landau level of zinc oxide
Author
Maryenko, D 1 ; McCollam, A 2 ; Falson, J 3 ; Kozuka, Y 4 ; Bruin, J 5 ; Zeitler, U 2 ; Kawasaki, M 6 

 RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan 
 High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands 
 Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), The University of Tokyo, Tokyo, Japan; Max Planck Institute for Solid State Research, Stuttgart, Germany 
 Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), The University of Tokyo, Tokyo, Japan; National Institute for Materials Science, Tsukuba, Ibaraki, Japan 
 High Field Magnet Laboratory (HFML-EMFL) and Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands; Max Planck Institute for Solid State Research, Stuttgart, Germany 
 RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan; Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), The University of Tokyo, Tokyo, Japan 
Pages
1-6
Publication year
2018
Publication date
Oct 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2123043459
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.