Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene

Bandurin, D. A.; Mönch, E.; Kapralov, K.; Phinney, I. Y.; Lindner, K.; Liu, S.; Edgar, J. H.; Dmitriev, I. A.; Jarillo-Herrero, P.; Svintsov, D.; Ganichev, S. D.

doi:10.48550/arxiv.2106.02117

Cited by 1 publication

(1 citation statement)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At very large wave vectors, the current-field relations become non-local and reflect the dynamics of individual electrons. While linear non-local response of twodimensional systems is quite well studied [16][17][18] , the nonlinear processes of photocurrent generation at strong non- in field wave vector 11 , or to the hydrodynamic description of electron systems 10 . The latter is valid only at small frequencies compared to that of carrier-carrier collisions, and at long wavelengths much exceeding the mean free path 19 .…”

Section: Introductionmentioning

confidence: 99%

Plasmonic drag photocurrent in graphene at extreme nonlocality

Silkin

Svintsov

2021

Phys. Rev. B

View full text Add to dashboard Cite

It is commonly assumed that photocurrent in two-dimensional systems with centrosymmetric lattice is generated at structural inhomogenities, such as p-n junctions. Here, we study an alternative mechanism of photocurrent generation associated with inhomogenity of the driving electromagnetic field, termed as 'plasmonic drag'. It is associated with direct momentum transfer from field to conduction electrons, and can be characterized by a non-local non-linear conductivity σ (2) (q, ω). By constructing a classical kinetic model of non-linear conductivity with full account of non-locality, we show that it is resonantly enhanced for wave phase velocity coinciding with electron Fermi velocity. The enhancement is interpreted as phase locking between electrons and the wave. We discuss a possible experiment where non-uniform field is created by a propagating graphene plasmon, and find an upper limit of the current responsivity vs plasmon velocity. This limit is set by a competition between resonantly growing σ (2) (q, ω) and diverging kinetic energy of electrons as the wave velocity approaches Fermi velocity.

show abstract