Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-02-03
Phys.Rev.B, 81,165441(2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures
Scientific paper
10.1103/PhysRevB.81.165441
Photon drag current in monolayer graphene with degenerate electron gas is studied under interband excitation near the threshold of fundamental transitions. Two main mechanisms generate an emergence of electron current. Non-resonant drag effect (NDE) results from direct transfer of in-plane photon momentum ${\bf q}$ to electron and dependence of matrix elements of transitions on ${\bf q}$. Resonant drag effect (RDE) originates from ${\bf q}$-dependent selection of transitions due to a sharp form of the Fermi distribution in energy. The drag current essentially depends on the polarization of radiation and, in general, is not parallel to ${\bf q}$. The perpendicular current component appears if the in-plain electric field is tilted towards ${\bf q}$. The RDE has no smallness connected with $q$ and exists in a narrow region of photon frequency $\omega$: $|\hbar\omega-2\epsilon_F|< \hbar sq$, where $s$ is the electron velocity.
Entin V. M.
Magarill L. I.
Shepelyansky Dima L.
No associations
LandOfFree
Theory of resonant photon drag in monolayer graphene does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Theory of resonant photon drag in monolayer graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theory of resonant photon drag in monolayer graphene will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-601893