TY - JOUR
T1 - Relativistic ferromagnetic magnon at the zigzag edge of graphene
AU - You, Jhih Shih
AU - Huang, Wen Min
AU - Lin, Hsiu Hau
PY - 2008/10/22
Y1 - 2008/10/22
N2 - We study the spin-wave excitations near the zigzag edge of graphene. It is rather interesting that we obtain a single branch of relativistic ferromagnetic magnon due to the presence of the open boundary. Note that magnons in antiferromagnets appear in pairs, while the single branch magnon in ferromagnets does not have relativistic dispersion. Thus, the magnon near the zigzag edge of graphene is a hybrid of both, signaling its intrinsic property as a boundary excitation that must be embedded in a higher dimensional bulk system.
AB - We study the spin-wave excitations near the zigzag edge of graphene. It is rather interesting that we obtain a single branch of relativistic ferromagnetic magnon due to the presence of the open boundary. Note that magnons in antiferromagnets appear in pairs, while the single branch magnon in ferromagnets does not have relativistic dispersion. Thus, the magnon near the zigzag edge of graphene is a hybrid of both, signaling its intrinsic property as a boundary excitation that must be embedded in a higher dimensional bulk system.
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U2 - 10.1103/PhysRevB.78.161404
DO - 10.1103/PhysRevB.78.161404
M3 - Article
AN - SCOPUS:55449118252
SN - 1098-0121
VL - 78
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 16
M1 - 161404
ER -