TY - JOUR
T1 - Quantum transport in a multi-path graphene Aharonov–Bohm interferometer
AU - Osuala, Cynthia I.
AU - Tang, Zitao
AU - Strauf, Stefan
AU - Yang, Eui Hyeok
AU - Qu, Chunlei
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2024/1
Y1 - 2024/1
N2 - We investigate the quantum transport dynamics of electrons in a multi-path Aharonov–Bohm interferometer comprising several parallel graphene nanoribbons. At low magnetic field strengths, the conductance displays a complex oscillatory behavior stemming from the interference of electron wave functions from different paths, reminiscent of the diffraction grating in optics. With increasing magnetic field strength, certain nanoribbons experience transport blockade, leading to conventional Aharonov–Bohm oscillations arising from two-path interference. We also discuss the impact of edge effects and the influence of finite temperature. Our findings offer valuable insights for experimental investigations of quantum transport in multi-path devices and their potential application for interferometry and quantum sensing.
AB - We investigate the quantum transport dynamics of electrons in a multi-path Aharonov–Bohm interferometer comprising several parallel graphene nanoribbons. At low magnetic field strengths, the conductance displays a complex oscillatory behavior stemming from the interference of electron wave functions from different paths, reminiscent of the diffraction grating in optics. With increasing magnetic field strength, certain nanoribbons experience transport blockade, leading to conventional Aharonov–Bohm oscillations arising from two-path interference. We also discuss the impact of edge effects and the influence of finite temperature. Our findings offer valuable insights for experimental investigations of quantum transport in multi-path devices and their potential application for interferometry and quantum sensing.
KW - Aharonov–Bohm effect
KW - Graphene
KW - Interferometry
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U2 - 10.1016/j.mseb.2023.117012
DO - 10.1016/j.mseb.2023.117012
M3 - Article
AN - SCOPUS:85177178338
SN - 0921-5107
VL - 299
JO - Materials Science and Engineering: B
JF - Materials Science and Engineering: B
M1 - 117012
ER -