Influence of Thermal Fluctuations of Spin Density Wave Order Parameter on the Quasiparticle Spectral Function

Abstract

The two-dimensional model of itinerant electrons coupled to an anti-ferromagnetic order parameter is considered. In the mean field solution the Fermi surface undergoes reconstruction, and breaks into disconnected ``pockets''. We have studied the effect of the thermal fluctuations of the order parameter on the spectral density in such system. These fluctuations lead to a finite width of the spectral line scaling linearly with temperature. Due to the thermal fluctuations the quasi-particle spectral weight is transfered into a magnetic Brillouin zone. This can be interpreted as restoration of ``arcs'' of the non-interacting Fermi surface.

7 pages, 4 figures

References in corpus (7)

• Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor
• Quantum Oscillations in the Underdoped Cuprate YBa2Cu4O8
• Where is the quantum critical point in the cuprate superconductors?
• Fluctuating spin density waves in metals
• Effective theory of Fermi pockets in fluctuating antiferromagnets
• Antiferromagnetism and single-particle properties in the two-dimensional half-filled Hubbard model: a non-linear sigma model approach
• Influence of thermal phase fluctuations on the single particle Green function in a 2D d-wave superconductor

Cited by in corpus (5)

• The underdoped cuprates as fractionalized Fermi liquids: transition to superconductivity
• The interplay between superconductivity and non-Fermi liquid at a quantum-critical point in a metal
• Towards the Standard Model of Fermi Arcs from a Wilsonian Reduction of the Hubbard Model
• Spontaneous breaking of four-fold rotational symmetry in two-dimensional electron systems as a topological phase transition
• Effects of thermal phase fluctuations in a 2D superconductor: an exact result for the spectral function