Gap Structure and Gapless Structure in Fractional Quantum Hall Effect
Author
Source
Advances in Condensed Matter Physics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-05
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Higher-order composite fermion states are correlated with many quasiparticles.
The energy calculations are very complicated.
We develop the theory of Tao and Thouless to explain them.
The total Hamiltonian is (HD+HI), where HD includes Landau energies and classical Coulomb energies.
We find the most uniform electron configuration in Landau states which has the minimum energy of HD.
At ν=(2j−1)/(2j), all the nearest electron pairs are forbidden to transfer to any empty states because of momentum conservation.
Therefore, perturbation energies of the nearest electron pairs are zero in all order of perturbation.
At ν=j/(2j−1), j/(2j+1), all the nearest electron (or hole) pairs can transfer to all hole (or electron) states.
At ν=4/11, 4/13, 5/13, 5/17, 6/17, only the specific nearest hole pairs can transfer to all electron states.
For example, the nearest-hole-pair energy at ν=4/11 is lower than the limiting energies from both sides (the left side ν=(4s+1)/(11s+3) and the right side ν=(4s−1)/(11s−3) for infinitely large s).
Thus, the nearest-hole-pair energy at specific ν is different from the limiting values from both sides.
The property yields energy gap for the specific ν.
Also gapless structure appears at other filling factors (e.g., at ν=1/2).
American Psychological Association (APA)
Sasaki, Shosuke. 2012. Gap Structure and Gapless Structure in Fractional Quantum Hall Effect. Advances in Condensed Matter Physics،Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-459993
Modern Language Association (MLA)
Sasaki, Shosuke. Gap Structure and Gapless Structure in Fractional Quantum Hall Effect. Advances in Condensed Matter Physics No. 2012 (2012), pp.1-13.
https://search.emarefa.net/detail/BIM-459993
American Medical Association (AMA)
Sasaki, Shosuke. Gap Structure and Gapless Structure in Fractional Quantum Hall Effect. Advances in Condensed Matter Physics. 2012. Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-459993
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-459993