TY - JOUR
T1 - Spin-orbit effects in a graphene bipolar pn junction
AU - Yamakage, A.
AU - Imura, K. I.
AU - Cayssol, J.
AU - Kuramoto, Y.
PY - 2009/8/1
Y1 - 2009/8/1
N2 - A graphene pn junction is studied theoretically in the presence of both intrinsic and Rashba spin-orbit couplings. We show that a crossover from perfect reflection to perfect transmission is achieved at normal incidence by tuning the perpendicular electric field. By further studying angular-dependent transmission, we demonstrate that perfect reflection at normal incidence can be clearly distinguished from trivial band gap effects. We also investigate how spin-orbit effects modify the conductance and the Fano factor associated with a potential step in both nn and np cases.
AB - A graphene pn junction is studied theoretically in the presence of both intrinsic and Rashba spin-orbit couplings. We show that a crossover from perfect reflection to perfect transmission is achieved at normal incidence by tuning the perpendicular electric field. By further studying angular-dependent transmission, we demonstrate that perfect reflection at normal incidence can be clearly distinguished from trivial band gap effects. We also investigate how spin-orbit effects modify the conductance and the Fano factor associated with a potential step in both nn and np cases.
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U2 - 10.1209/0295-5075/87/47005
DO - 10.1209/0295-5075/87/47005
M3 - Article
AN - SCOPUS:77954823911
VL - 87
JO - Journal de Physique (Paris), Lettres
JF - Journal de Physique (Paris), Lettres
SN - 0295-5075
IS - 4
M1 - 47005
ER -