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تسجيل مستخدم جديدElectronic transport in disordered graphene superlattices with scale-free correlated barrier spacements
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نشر من قبل
Anderson Barbosa A. L. R. Barbosa
تاريخ النشر
2020
مجال البحث
فيزياء
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English
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A transfer matrix approach is used to study the electronic transport in graphene superlattices with long-range correlated barrier spacements. By considering the low-energy electronic excitations as massless Dirac fermions, we compute by transmission spectra of graphene superlattices with potential barriers having spacements randomly distributed with long-range correlations governed by a power-law spectral density $S(k)propto 1/k^{alpha}$. We show that at large incidence angles, the correlations in the disorder distribution do not play a significant role in the electronic transmission. However, long-range correlations suppress the Anderson localization as normal incidence is approached and a band of transmitting modes sets up reminiscent of Klein tunneling.
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