Penn State Science
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3D topological insulators
Artificial Frustrated Magnets
Coherent Spin Control
Mesoscopic Spin Devices
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We are broadly interested in fundamental studies of spin-dependent phenomena in mesoscopic and nanoscale systems.

The central theme of our research is the fundamental understanding of spin-dependent phenomena in mesoscopic and nanoscale ''spintronic'' systems derived from semiconductors, magnetic materials and superconductors. Our laboratory employs advanced materials synthesis techniques (molecular beam epitaxy, optical/e-beam lithography and nanopatterning) to fabricate a variety of materials that can serve as model systems for addressing basic questions in spintronics. We probe the organization, transport and dynamical behavior of spins in these systems using electronic, optical and magnetic measurements, often under extreme conditions of temperature and magnetic field. Many of these studies are carried out collaboratively with David Awschalom's group at UC Santa Barbara, Peter Schiffer's group at Penn State and within the Penn State Canter for Nanoscale Science (with Profs. Chan, Jain, Mallouk, Mayer, Mohney, Redwing, Zhu). We also currently have active collaborations with researchers at several other universities: Princeton (Yazdani, Hasan, Ong and Cava), Cornell (Ralph), University of Iowa (Flatte), Ohio State (Hammel) and UC-San Diego (Basov).

This research area provides opportunities for undergraduate research.

3D topological insulator heterostructures
Artificial Frustrated Magnets
Coherent Spin Control in Microfabricated Semiconductor Geometries
Spin Transport and Manipulation in Mesoscopic Semiconductor Devices

Publications

2012 · All
N. Samarth, "Ferromagnetic Semiconductors: Battle of the Bands," Nature Mater. 11, 360 – 361 (2012)

Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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N. Samarth : Research