Graphene;
Magnetic barrier;
Dirac fermion;
KLEIN PARADOX;
D O I:
10.1016/j.physe.2009.09.001
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
We have studied the tunneling of Dirac fermions through magnetic barriers in graphene. Magnetic barriers are produced via delta function-like inhomogeneous magnetic fields in which Dirac fermions in graphene experience the tunneling barrier in the real sense in contrast to Klein paradox caused by electrostatic barriers. The transmission through the magnetic barriers as functions of incident energy and angle of incoming fermions shows characteristic oscillations associated with tunneling resonances. We have also found the confined states in the magnetic barrier region which turn out to correspond to the total internal reflection in the usual optics. (C) 2009 Elsevier B.V. All rights reserved.
机构:
Saudi Ctr Theoret Phys, Dhahran, Saudi Arabia
King Fahd Univ Petr & Minerals, Dept Phys, Dhahran 31261, Saudi ArabiaChouaib Doukkali Univ, Fac Sci, Theoret Phys Grp, El Jadida 2400, Morocco
Bahlouli, Hocine
Choubabi, El Bouzzaoui
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机构:
Chouaib Doukkali Univ, Fac Sci, Theoret Phys Grp, El Jadida 2400, MoroccoChouaib Doukkali Univ, Fac Sci, Theoret Phys Grp, El Jadida 2400, Morocco
Choubabi, El Bouzzaoui
Jellal, Ahmed
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机构:
Chouaib Doukkali Univ, Fac Sci, Theoret Phys Grp, El Jadida 2400, Morocco
Saudi Ctr Theoret Phys, Dhahran, Saudi Arabia
King Faisal Univ, Coll Sci, Dept Phys, Alahsa 31982, Saudi ArabiaChouaib Doukkali Univ, Fac Sci, Theoret Phys Grp, El Jadida 2400, Morocco
Jellal, Ahmed
Mekkaoui, Miloud
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Chouaib Doukkali Univ, Fac Sci, Theoret Phys Grp, El Jadida 2400, MoroccoChouaib Doukkali Univ, Fac Sci, Theoret Phys Grp, El Jadida 2400, Morocco