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The Effective Charge Velocity of Spin-{1}{2} Superlattices
Heinsenberg DMRG Plateaus Luttinger liquid
2010/9/25
We calculate the spin gap of homogeneous and inhomogeneous spin chains, using the White’s density matrix renormalization group technique. We found that the spin gap is related to the ration between th...
Evidence of the Miniband Formation in InGaAs/InP Superlattices
Superlattices Plasmons Raman scattering
2010/9/25
The formation of the miniband electron energy structure was explored in doped InGaAs=InP superlattices with different periods. The analysis of the Raman data allowed us to conclude that in spite of th...
Coherence of Elementary Excitations in Disordered GaAs/AlGaAs Superlattices
Coherence Localization Superlattices
2010/9/25
The localization properties of the single-particle and collective electron excitations were investigated in the intentionally disordered GaAs=AlGaAs superlattices by weak field magnetoresistance and R...