Particle-hole symmetry and electromagnetic response of a half-filled Landau level
- Univ. of Chicago, IL (United States)
We derive exact physical consequences of particle-hole symmetry of the ν = 1/2 state of electrons in a strong magnetic field. We show that if the symmetry is not spontaneously broken, the Hall conductivity and the susceptibility satisfy an exact relationship, valid at any wave numbers and any frequencies much below the cyclotron frequency. The relationship holds for clean systems and also for systems with statistically particle-hole symmetric disorder. We work out the constraints this relationship imposes on the theory of the Dirac composite fermion. Here, we also argue that that the exact relationship is violated in the Halperin-Lee-Read (HLR) field theory and present an explicit calculation within a Galilean invariant mean-field approximation to the HLR theory to illustrate the breakdown.
- Research Organization:
- Univ. of Chicago, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); Simons Foundation
- Grant/Contract Number:
- SC0009924; DMR-1254741; FG02-13ER41958
- OSTI ID:
- 1595711
- Alternate ID(s):
- OSTI ID: 1347050
- Journal Information:
- Physical Review B, Vol. 95, Issue 12; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Thermopower and Nernst measurements in a half-filled lowest Landau level
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journal | June 2018 |
Berry phase of the composite-fermion Fermi sea: Effect of Landau-level mixing
|
journal | August 2018 |
Weiss oscillations and particle-hole symmetry at the half-filled Landau level | text | January 2016 |
Bimetric Theory of Fractional Quantum Hall States | text | January 2017 |
Berry phase of the composite-fermion Fermi Sea: Effect of Landau-level mixing | text | January 2018 |
Dirac Fermion Hierarchy of Composite Fermi Liquids | text | January 2018 |
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