Ferromagnetism in the Hubbard model with an infinite-range hopping

被引：16
作者：
Pieri, P [1 ]
机构：
[1] UNIV BOLOGNA,IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY
来源：
MODERN PHYSICS LETTERS B | 1996年 / 10卷 / 26期
关键词：
D O I：
10.1142/S0217984996001449
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We prove, as recently conjectured, that the ground state of the Hubbard Hamiltonian with an infinite-range hopping, when the number of electrons N-e = N + 1 (M being the number of sites), is ferromagnetic fully polarized. This turns out to be a simple consequence of a general theorem proven by Mielke on flat-band ferromagnetism.
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页码：1277 / 1281
页数：5
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