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Mehdi Hatefipour on Muck Rack

Mehdi Hatefipour

As seen in: Physical Review B
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Articles by Mehdi Hatefipour

Andreev reflection of quantum Hall states through a quantum point contact

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By Mehdi Hatefipour, Ido Levy, William Strickland, Joseph J. Cuozzo
| Physical Review B
We investigate the interplay between the quantum Hall (QH) effect and superconductivity in InAs surface quantum well (SQW)/NbTiN heterostructures using a quantum point contact (QPC). We use QPC to control the proximity of the edge states to the superconductor. By measuring the upstream and downstream resistances of the device, we investigate the efficiency of Andreev conversion at the InAs/NbTiN interface.
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Observing magnetoanisotropic weak antilocalization in near-surface quantum wells

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By William F. Schiela, Neda Lotfizadeh, S. M. Farzaneh, Mehdi Hatefipour
| Physical Review B
We investigate the effects of an in-plane magnetic field on the weak antilocalization signature of near-surface quantum wells lacking bulk and inversion symmetry. The measured magnetoconductivity, which is conductivity as a function of the out-of-plane magnetic field, exhibits a strong anisotropy with respect to the direction of the in-plane magnetic field. The twofold symmetry of the observed magnetoanisotropy originates from the competition between Rashba and Dresselhaus spin-orbit couplings.
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