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A. J. Sierakowski
Researcher at Cornell University
Publications - 2
Citations - 1587
A. J. Sierakowski is an academic researcher from Cornell University. The author has contributed to research in topics: Heterojunction & Hall effect. The author has an hindex of 2, co-authored 2 publications receiving 1498 citations.
Papers
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Journal ArticleDOI
Two dimensional electron gases induced by spontaneous and piezoelectric polarization in undoped and doped AlGaN/GaN heterostructures
Oliver Ambacher,B. E. Foutz,Joseph A. Smart,James R. Shealy,Nils Weimann,K. Chu,M. J. Murphy,A. J. Sierakowski,William J. Schaff,L.F. Eastman,Roman Dimitrov,A. Mitchell,Martin Stutzmann +12 more
TL;DR: In this paper, a combination of high resolution x-ray diffraction, atomic force microscopy, Hall effect, and capacitance-voltage profiling measurements is used to calculate the polarization induced sheet charge bound at the AlGaN/GaN interfaces.
Journal ArticleDOI
Role of Spontaneous and Piezoelectric Polarization Induced Effects in Group-III Nitride Based Heterostructures and Devices
Oliver Ambacher,Roman Dimitrov,Martin Stutzmann,B. E. Foutz,M. J. Murphy,Joseph A. Smart,James R. Shealy,Nils Weimann,K. Chu,M. Chumbes,B.M. Green,A. J. Sierakowski,William J. Schaff,L.F. Eastman +13 more
TL;DR: In this paper, the authors present theoretical and experimental results demonstrating how polarization induced electric fields and bound interface charges in group-III nitrides can lead to the formation of two-dimensional carrier gases suitable for the fabrication of high power microwave frequency transistors.