Quantum Correlations and Topological Quantum Numbers in the Fractional Quantum Hall Effect

1993 ◽  
Vol 97 (1) ◽  
pp. 49-54 ◽  
Author(s):  
Erkki J. Brändas
Keyword(s):  
Hall Effect ◽  
Quantum Hall Effect ◽  
Quantum Hall ◽  
Quantum Correlations ◽  
Fractional Quantum Hall Effect ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Quantum Numbers ◽  
Topological Quantum

scholarly journals Recent experimental progress of fractional quantum Hall effect: 5/2 filling state and graphene

2014 ◽  
Vol 1 (4) ◽  
pp. 564-579 ◽  
Author(s):  
Xi Lin ◽  
Ruirui Du ◽  
Xincheng Xie
Keyword(s):  
Hall Effect ◽  
Quantum Hall Effect ◽  
Quantum Hall ◽  
High Mobility ◽  
Fractional Quantum Hall Effect ◽  
Coulomb Interactions ◽  
Fractional Quantum ◽  
Fractional Quantum Hall ◽  
Technical Developments ◽  
Topological Quantum

Abstract The phenomenon of fractional quantum Hall effect (FQHE) was first experimentally observed 33 years ago. FQHE involves strong Coulomb interactions and correlations among the electrons, which leads to quasiparticles with fractional elementary charge. Three decades later, the field of FQHE is still active with new discoveries and new technical developments. A significant portion of attention in FQHE has been dedicated to filling factor 5/2 state, for its unusual even denominator and possible application in topological quantum computation. Traditionally, FQHE has been observed in high-mobility GaAs heterostructure, but new materials such as graphene also open up a new area for FQHE. This review focuses on recent progress of FQHE at 5/2 state and FQHE in graphene.

Second Activation Energy in the Fractional Quantum Hall Effect

1987 ◽  
Vol 56 (9) ◽  
pp. 3005-3008 ◽  
Author(s):  
Junichi Wakabayashi ◽  
Satoru Sudou ◽  
Shinji Kawaji ◽  
Kazuhiko Hirakawa ◽  
Hiroyuki Sakaki
Keyword(s):  
Activation Energy ◽  
Hall Effect ◽  
Quantum Hall Effect ◽  
Quantum Hall ◽  
Fractional Quantum Hall Effect ◽  
Fractional Quantum ◽  
Fractional Quantum Hall
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