REAL

Luttinger theorem for the strongly correlated Fermi liquid of composite fermions

Balram, Ajit C. and Tőke, Csaba and Jain, Jainendra K. (2015) Luttinger theorem for the strongly correlated Fermi liquid of composite fermions. PHYSICAL REVIEW LETTERS, 115. p. 186805. ISSN 0031-9007

[img]
Preview
Text
PhysRevLett.115.186805.pdf

Download (793kB) | Preview

Abstract

While an ordinary Fermi sea is perturbatively robust to interactions, the paradigmatic composite-fermion (CF) Fermi sea arises as a non-perturbative consequence of emergent gauge fields in a system where there was no Fermi sea to begin with. A mean-field picture suggests two Fermi seas, of composite fermions made from electrons or holes in the lowest Landau level, which occupy different areas away from half filling and thus appear to represent distinct states. We show that in the microscopic theory of composite fermions, which satisfies particle-hole symmetry in the lowest Landau level to an exceLuttinger theorem for the strongly correlated Fermi liquid of composite fermionsllent degree, the Fermi wave vectors at filling factors $\nu$ and $1-\nu$ are the same, and are generally consistent with the experimental findings of Kamburov {\em et al.} [Phys. Rev. Lett. {\bf 113}, 196801 (2014)]. Our calculations suggest that the area of the CF Fermi sea may slightly violate the Luttinger area rule.

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika > QC06 Physics of condensed matter / szilárdtestfizika
Depositing User: Dr Csaba Tőke
Date Deposited: 04 Oct 2016 07:18
Last Modified: 04 Oct 2016 07:18
URI: http://real.mtak.hu/id/eprint/41095

Actions (login required)

Edit Item Edit Item