Power loss of a beam of charged particles to encapsulated graphene
POSTER
Abstract
We have calculated the rate of loss of energy for a beam of charged particles to a hybrid structure
consisting of a graphene layer and a conducting substrate. The theory involves a determination
of the surface response function which we obtain in the random-phase approximation (RPA) in
conjunction with a transfer matrix method involving the induced electrostatic potential due to
an external electric field. A comparison of the contributions to the power loss due to plasmons
and particle-hole excitations is carried out. We analyze the way in which the plasmon losses are
influenced by an applied uniaxial strain as well as plasmon-phonon coupling.
consisting of a graphene layer and a conducting substrate. The theory involves a determination
of the surface response function which we obtain in the random-phase approximation (RPA) in
conjunction with a transfer matrix method involving the induced electrostatic potential due to
an external electric field. A comparison of the contributions to the power loss due to plasmons
and particle-hole excitations is carried out. We analyze the way in which the plasmon losses are
influenced by an applied uniaxial strain as well as plasmon-phonon coupling.
Presenters
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Dipendra Dahal
CUNY-Graduate Ctr, Physics and Astronomy, CUNY-Graduate Ctr
Authors
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Dipendra Dahal
CUNY-Graduate Ctr, Physics and Astronomy, CUNY-Graduate Ctr
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Godfrey Gumbs
Physics and Astronomy, Hunter college, Hunter college, CUNY, Physics and astronomy, Hunter College-City University of New York, Physics and Astronomy, Hunter College, CUNY, Department of Physics & Astronomy, Hunter College of CUNY, Hunter College, CUNY, Department of Physics and Astronomy, Hunter College of the City University of New York, Department of Physics and Astronomy, Hunter College, City University of New York