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Low-density ferromagnetism in biased bilayer graphene

Title
Low-density ferromagnetism in biased bilayer graphene
Type
Article in International Scientific Journal
Year
2008
Authors
Eduardo V Castro
(Author)
FCUP
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Peres, NMR
(Author)
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Stauber, T
(Author)
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Silva, NAP
(Author)
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Journal
Vol. 100
ISSN: 0031-9007
Other information
Authenticus ID: P-003-ZED
Abstract (EN): We compute the phase diagram of a biased graphene bilayer. The existence of a ferromagnetic phase is discussed with respect to both carrier density and temperature. We find that the ferromagnetic transition is first-order, lowering the value of U relatively to the usual Stoner criterion. We show that in the ferromagnetic phase the two planes have unequal magnetization and that the electronic density is holelike in one plane and electronlike in the other.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 4
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