Magnetic field effect on tunneling through triple barrier in AB bilayer graphene

Saley, Mouhamadou Hassane; Jellal, Ahmed

doi:10.1016/j.commatsci.2023.112711

Cited by 3 publications

(1 citation statement)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This behavior could be attributed to the presence of BLGlike propagating states inside the barrier, while the minimal transmission at normal incidence may be linked to MLG-like propagating states [33,46]. However, transmission resonances emerge at non-normal incidence, where the modes k 1 outside and q 1,3 inside the barrier are coupled, reminiscent of BLG tunneling [27,51,[53][54][55]. For the T 2 2 channel, in both figure 5 and figure 6, the transmission is null in the energy range g < < ¢ E 0 1 where the propagating mode k 2 is unavailable on the left and right sides of the junction.…”

Section: Transmission and Reflection Probabilitiesmentioning

confidence: 99%

Transport properties in ABC-ABA-ABC trilayer graphene junctions

El Mouhafid,

Hassane Saley,

Jellal

2024

Phys. Scr.

View full text Add to dashboard Cite

Trilayer graphene consists of three layers of graphene arranged in a particular stacking order. In the case of ABC-ABA-ABC stacking, the layers are arranged in an A-B-C sequence, followed by an A-B-A sequence, and again an A-B-C sequence. This stacking arrangement introduces specific electronic properties and band structures due to the different stacking configurations. We focus on elucidating the transport properties of a p-n-p junction formed with ABC-ABA-ABC stacking TLG. Employing the transfer matrix method and considering continuity conditions at the junction boundaries, we establish transmission and reflection probabilities, along with conductance. Notably, electron transport through the ABC-ABA-ABC junction exhibits Klein tunneling, resulting in substantial conductance even in the absence of a potential barrier $V_0$. This effect arises from the effective barrier induced by our specific stacking, facilitating the passage of a maximal number of electrons. However, the presence of $V_0$ diminishes Klein tunneling, leading to conductance minima. Furthermore, our findings highlight that interlayer bias $\delta$ induces a hybridization of the linear and parabolic bands of ABA-TLG within the junction, reducing resonances. In cases where $\delta\neq0$ and $V_0\neq0$, we observe a suppression of the gap, contrary to the results obtained in ABC tunneling studies where a gap exists.

show abstract