https://doi.org/10.1007/s100510050999
Search for antiferromagnetism in homogeneous electron systems
Instituto de Física de São Carlos,
Universidade de São Paulo, Caixa Postal 369, 13560-970 São Carlos, SP,
Brazil
Corresponding author: a capelle@if.sc.usp.br
Received:
22
December
1998
Revised:
4
May
1999
Published online: 15 November 1999
We present numerical and analytical evidence for the absence of a second-order
phase transition of homogeneous electron systems into an antiferromagnetic
state.
Our results are based on numerical data extending from the
extreme high-density regime (
) to the extreme low-density regime
(
).
The particle-particle interaction is treated within the random-phase
approximation, augmented by various types of local-field corrections.
The latter turn out to be crucial for a correct description of the
screening of spin-density waves.
Our results indicate the absence of a second-order transition of
the three-dimensional homogeneous electron gas, the two-dimensional
homogeneous electron gas, and laterally homogeneous electron layers, into a
collinear antiferromagnetic state.
PACS: 71.10.Ca – Electron gas, Fermi gas / 75.50.Ee – Antiferromagnetics / 75.30.Fv – Spin-density waves
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
