TY - JOUR
T1 - Planar rotation of electric field induced by edge-plasmon in a graphene nanoribbon
AU - Ukhtary, M. Shoufie
AU - Maruoka, Masato
AU - Saito, Riichiro
N1 - Funding Information:
M.S.U. and R.S. acknowledge JSPS KAKENHI Grants No. JP18J10199 and No. JP18H01810, respectively. M.M. acknowledges support from GP-Spin at Tohoku University.
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/10/30
Y1 - 2019/10/30
N2 - The presence of an edge in a two-dimensional (2D) material can induce an accumulation of charges near the edge by the electric field. Similar to the 2D plasmon, the accumulated charges can oscillate collectively, forming a distinct plasmon mode, which is called edge-plasmon. In contrast to the 2D plasmon, the electric potential of the edge-plasmon is localized near the edge. In this work, we discuss the edge-plasmon in a 2D material with finite width, such as a graphene nanoribbon, and we find that the localization of the electric field to the edge induces a phase difference of π/2 between electric fields in the directions parallel and perpendicular to the edge. As a result, the induced electric field rotates on the surface and also induces rotating current, which does not exist in the 2D plasmon. The edge-plasmon can be excited by incident light, and we predict that the rotating current generates rotation of the electric field of the scattered light.
AB - The presence of an edge in a two-dimensional (2D) material can induce an accumulation of charges near the edge by the electric field. Similar to the 2D plasmon, the accumulated charges can oscillate collectively, forming a distinct plasmon mode, which is called edge-plasmon. In contrast to the 2D plasmon, the electric potential of the edge-plasmon is localized near the edge. In this work, we discuss the edge-plasmon in a 2D material with finite width, such as a graphene nanoribbon, and we find that the localization of the electric field to the edge induces a phase difference of π/2 between electric fields in the directions parallel and perpendicular to the edge. As a result, the induced electric field rotates on the surface and also induces rotating current, which does not exist in the 2D plasmon. The edge-plasmon can be excited by incident light, and we predict that the rotating current generates rotation of the electric field of the scattered light.
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U2 - 10.1103/PhysRevB.100.155432
DO - 10.1103/PhysRevB.100.155432
M3 - Article
AN - SCOPUS:85074923133
VL - 100
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 15
M1 - 155432
ER -