Determining the Fermi Surface from Arpes Integrals

• Authors: K. Matho
• Languages of publication: EN

Abstracts

EN

ARPES integrals are related to the momentum distribution n_{k}. In case of a metal, points k_{F} on the Fermi surface were identified by: (i) a change of sign in the temperature variation of the ARPES integrals or (ii) maximum slope in its angular variation. These criteria are based on the assumption of particle-hole symmetry in the vicinity of the Fermi edge. Here, we check (i) and (ii) on the level of the momentum distribution, for an electronic structure with most of its incoherent weight below the Fermi edge. Evaluating n_{k}(T) up to T ≈ Δ*, a Fermi liquid coherence energy, we find: criterion (i) remains stable, while (ii) deviates from k_{F} ∝ m*T/k_{F}. Published data on the hole doped t-J model are examined in this light.

Keywords

EN

71.10.Ay; 71.18.+y; 79.60.-i

Discipline

• 71.10.Ay: Fermi-liquid theory and other phenomenological models
• 79.60.-i: Photoemission and photoelectron spectra(for photoelectron spectroscopy, see 87.64.ks in biological physics; 82.80.Pv in chemical analysis)
• 71.18.+y: Fermi surface: calculations and measurements; effective mass, g factor

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 1
• Pages: 201-204

Dates

published

2000-01

Contributors

author

K. Matho

• Centre de Recherches sur les Très Basses Températures, Laboratoire associéŕ l'Université Joseph Fourier, CNRS, B.P. 166, 38042 Grenoble cedex 9, France

Identifiers

DOI

10.12693/APhysPolA.97.201