Abstract
Electronic transmittance vs energy for two identical coupled random-dimer chains is investigated within the Anderson tight-binding model. The electronic transmittance is calculated by using the Block recursion algorithm proposed by Godin and Haydock. The single-chain random-dimer result such as occurrence of band of nonscattered states is recovered for very small interchain hopping parameter. The transmittance vs energy curve shows a resonance pattern, which is highly sensitive to both interchain hopping and lead positions. Even for the moderate interchain hopping the band of nonscattered states gets modified by appearance of strong fluctuations or irregular dips leading to a new pattern for the transmittance vs energy curve. \textcopyright{} 1996 The American Physical Society.
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