Literature DB >> 34168193

Transport properties through graphene with sequence of alternative magnetic barriers and wells in the presence of time-periodic scalar potential.

Fatemeh Pakdel1, Mohammad Ali Maleki2.   

Abstract

We investigate the electronic transport properties of a graphene sheet under the magnetic barriers and wells through the oscillating scalar potential combined with the static scalar potential barrier having two types of uniform and alternative profiles. We compute the total sideband transmission of the system by additional sidebands at energy, in presence of oscillating potential, [Formula: see text], using the transfer-matrix formalism and the Floquet sidebands series. The oscillating potential, generally, suppresses the Klein tunneling and the confinement of the charge carriers. In the absence of [Formula: see text], both profiles show the wave vector filtering effect for the carriers by controlling the energy E relative to the potential barrier height, [Formula: see text]. The [Formula: see text]-fold resonance splittings are observed through a region around [Formula: see text] with reduction of the transmission. The transmission vanishes in this region upon increasing the number of magnetic blocks N, strength of the magnetic field B in both configurations. We present an estimate relation for the width of the reduction region expressed in terms of E, [Formula: see text], B and the angle of incidence of the quasiparticles. We observe, in the second profile, [Formula: see text]-fold resonances in the transmission for special values of [Formula: see text] with a separation depending on the width of the magnetic blocks. The magnetic field and the width of the magnetic blocks have critical values, where the transmission reduces to zero. All the features observed in the transmission reflect to the conductance. In both configurations, there are some peaks in the conductance corresponding to the resonances of the transmission. The oscillations of the conductance are obtained which was observed in the experimental results. We, also, find the possibility for switching the transport properties of the system by changing the characteristic parameters of the magnetic system.

Entities:  

Year:  2021        PMID: 34168193     DOI: 10.1038/s41598-021-92614-0

Source DB:  PubMed          Journal:  Sci Rep        ISSN: 2045-2322            Impact factor:   4.379


  10 in total

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2.  The focusing of electron flow and a Veselago lens in graphene p-n junctions.

Authors:  Vadim V Cheianov; Vladimir Fal'ko; B L Altshuler
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3.  Magnetic confinement of massless Dirac fermions in graphene.

Authors:  A De Martino; L Dell'Anna; R Egger
Journal:  Phys Rev Lett       Date:  2007-02-06       Impact factor: 9.161

4.  Coherent control of dressed matter waves.

Authors:  Alessandro Zenesini; Hans Lignier; Donatella Ciampini; Oliver Morsch; Ennio Arimondo
Journal:  Phys Rev Lett       Date:  2009-03-13       Impact factor: 9.161

5.  Klein backscattering and Fabry-Pérot interference in graphene heterojunctions.

Authors:  Andrei V Shytov; Mark S Rudner; Leonid S Levitov
Journal:  Phys Rev Lett       Date:  2008-10-10       Impact factor: 9.161

6.  Realizing the Harper Hamiltonian with laser-assisted tunneling in optical lattices.

Authors:  Hirokazu Miyake; Georgios A Siviloglou; Colin J Kennedy; William Cody Burton; Wolfgang Ketterle
Journal:  Phys Rev Lett       Date:  2013-10-28       Impact factor: 9.161

7.  Single-particle tunneling in strongly driven double-well potentials.

Authors:  E Kierig; U Schnorrberger; A Schietinger; J Tomkovic; M K Oberthaler
Journal:  Phys Rev Lett       Date:  2008-05-14       Impact factor: 9.161

8.  Wavepacket scattering of Dirac and Schrödinger particles on potential and magnetic barriers.

Authors:  Kh Yu Rakhimov; Andrey Chaves; G A Farias; F M Peeters
Journal:  J Phys Condens Matter       Date:  2011-06-17       Impact factor: 2.333

9.  Collapse of Landau levels in gated graphene structures.

Authors:  Nan Gu; Mark Rudner; Andrea Young; Philip Kim; Leonid Levitov
Journal:  Phys Rev Lett       Date:  2011-02-09       Impact factor: 9.161

10.  Floquet bound states in the continuum.

Authors:  Stefano Longhi; Giuseppe Della Valle
Journal:  Sci Rep       Date:  2013       Impact factor: 4.379

  10 in total

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