O. Ambacher

University of Freiburg — Germany

Physics and Astronomy · Physical Sciences

73h-index31.9kcitations961works5.82yr avg
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Research Topics

GaN-based semiconductor devices and materials(574), Radio Frequency Integrated Circuit Design(204), Ga2O3 and related materials(181), Semiconductor materials and devices(179), Acoustic Wave Resonator Technologies(143)

Publications961 total

Performance enhancement of AlGaN/GaN-based high electron mobility transistors with sputtered AlScN gate dielectric
Journal of Applied Physics·2026Open Access
Experimental demonstration of wurtzite to rock salt transition and bandgap evolution in In1− <i>x</i> Sc <i>x</i> N grown by sputtering
Journal of Applied Physics·2026Open Access
Giant spontaneous polarization in zinc-blende III-V semiconductors
Physical review. B./Physical review. B·2025Open Access
Strategy to obtain epitaxial aluminum scandium nitride thin films with reduced defect densities by magnetron sputtering
Journal of Applied Physics·2025· 1 citedOpen Access
Epitaxial and Fiber‐Textured Stacks of Al<sub>0.7</sub>Sc<sub>0.3</sub>N/Mo/AlN Prepared by Magnetron Sputter Epitaxy for Bulk Acoustic Wave Devices: A Comparison using High Overtone Bulk Acoustic Wave Resonator
physica status solidi (a)·2025Open Access
Giant spontaneous polarization in zincblende III-V semiconductors
arXiv (Cornell University)·2025Open Access
Electrical properties of SiN<i>y</i>/Al1−<i>x</i>Sc<i>x</i>N/GaN-based metal–insulator–semiconductor structures
Journal of Applied Physics·2025· 4 cited
A comprehensive review of yttrium aluminum nitride: crystal structure, growth techniques, properties, and applications
Frontiers in Materials·2025· 9 citedOpen Access
Erratum: “Electrical and structural characterization of YAlN at high alloy concentrations” [J. Appl. Phys. 136, 185103 (2024)]
Journal of Applied Physics·2025
Structural and electrical properties of fiber textured and epitaxial molybdenum thin films prepared by magnetron sputter epitaxy
Applied Physics Letters·2025· 6 citedOpen Access
Elastic properties of rock salt ScN thin films investigated by laser ultrasound
Journal of Applied Physics·2024Open Access
Electrical and structural characterization of YAlN at high alloy concentrations
Journal of Applied Physics·2024· 6 cited
Structural and electrical properties of fiber textured and epitaxial molybdenum thin films prepared by magnetron sputter epitaxy
arXiv (Cornell University)·2024Open Access
Temperature-dependent properties of wurtzite and rock salt Al<sub>1−x</sub>Sc<sub>x</sub>N for applications in BAW resonators
Journal of Physics D Applied Physics·2024· 2 cited
Clarification of the spontaneous polarization direction in crystals with wurtzite structure
Applied Physics Letters·2024· 17 citedOpen Access
Comparison of aluminum nitride thin films prepared by magnetron sputter epitaxy in nitrogen and ammonia atmosphere
Applied Physics Letters·2024· 11 citedOpen Access
Understanding Interfaces in AlScN/GaN Heterostructures
Advanced Functional Materials·2024· 31 citedOpen Access
Modeling of polarization reversal-induced interface sheet charge in wurtzite-type AlScN/GaN heterostructures
Journal of Applied Physics·2024· 18 citedOpen Access
Thermal expansion coefficient of ScN(111) thin films grown on Si(111) determined by X-ray diffraction
Applied Physics Letters·2024· 5 citedOpen Access
Influence of growth temperature on the properties of aluminum nitride thin films prepared by magnetron sputter epitaxy
Journal of Applied Physics·2023· 23 citedOpen Access
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Frequent Co-authors

M. Stutzmann(27), R. Dimitrov(13), L.F. Eastman(7), Martin Eickhoff(7), W. J. Schaff(6), H. Angerer(6), V. Cimalla(6), J. Schalwig(6), J. Smart(5), J. R. Shealy(5), Michael J. Murphy(5), Nils Weimann(4), Gerhard Müller(4), R. Neuberger(4), Lutz Kirste(4), K. Chu(3), W. Rieger(3), Arnulf Leuther(3), A. Tessmann(3), R. Höpler(3)