Low Dimensional Semiconductors

Low Dimensional Semiconductors

Their application in the study of mesoscopic phenomena and in quantum information processing has cemented low-dimensional semiconductors at the forefront condensed matter and materials physics research. The semiconductor based implementation of a solid-state quantum information processing system, where typically the spin configuration of one or a few electrons constitutes a qubit, can be realized through the formation of an array of quantum dots using electrostatic gates over a quantum well created in a semiconductor heterostructure. Our group designs near surface quantum well systems, implements their growth by molecular beam epitaxy, and studies their electronic properties and the noise characteristics of quantum devices.

This work is funded by IARPA

Coupling a superconductor to a semiconductor results in a localized region where charge carriers feel the physics of both materials. A low dimensional semiconductor with large spin-orbit proximity coupled to an s-wave superconductor is predicted to result in a topological superconductor. This new class of material may lead to topological quantum computers. Our group designs superconductor-low dimensional semiconductor heterostructures, implements their growth by molecular beam epitaxy, and studies their electronic properties and transport in mesoscopic devices.

This work is funded by Microsoft Corporation

Researchers

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Professor, ECE and Materials Departments

Epitaxy of dissimilar materials.

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Ph.D. Candidate

Growth and characterization of Heusler compounds and III-V heterostructures.

Postdoctoral Researcher

Molecular beam epitaxy of semiconductor/superconductor heterostructures and the quantum transport in the nanostructures of the hybrid systems.

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Graduate Student Researcher

Spin injection, transport, and detection in semiconductors. IR detection and low dimensional systems. Spin torque transfer. Fabrication and characterization.

Mihir Pendharkar
Graduate Student Researcher

Molecular Beam Epitaxy (MBE) growth of III-V semiconductor heterostructures, low temperature VIS-IR spectroscopy, transmission spectroscopy, Magneto Optic Kerr Effect, Scanning Tunneling Microscopy, spintronics and quantum computing