Nanofabrication

Group-III-arsenides

Reflectivity measured in situ during growth of a microcavity structure

These alloys are well-known semiconductors, which can be used to produce heterostructures of highest structural and optical quality. Accordingly, for many device applications and basic research experiments they are still the first choice. Within the core research area Nanofabrication, our activities on group-III-arsenides focus on the study of

fundamental growth mechanisms on GaAs substrates of various orientations and miscuts

adatom migration during growth on patterned substrates or epitaxial templates

the development of in-situ control tools, in particular continuous measurements of the spectral reflectivity, to fabricate thick and complex heterostructures with highest precision even for prolonged growth times of more than 24 h.

The resulting growth expertise mainly serves as the basis for the fabrication of tailored structures in the core research areas Control of Elementary Excitations by Acoustic Fields and Intersubband emitters. In addition, we provide samples for various internal and external collaborators.

4	Autor	F. Mahler , K. Reimann , M. Woerner , T. Elsaesser , C. Flytzanis , K. Biermann
	Titel	Impact of piezoelectric ﬁelds on coherent zone-folded phonons in GaAs/AlAs superlattices
	Source	Phys. Rev. B , 100 , 121302 ( 2019 )
DOI : 10.1103/PhysRevB.100.121302 \| Download: PDF \| 3146 Cite : Bibtex RIS @article{ author = { F. Mahler and K. Reimann and M. Woerner and T. Elsaesser and C. Flytzanis and K. Biermann }, title = { Impact of piezoelectric ﬁelds on coherent zone-folded phonons in GaAs/AlAs superlattices }, journal = { Physical Review B: Solid State }, volume = { 100 }, year = { 2019 }, pages = { 121302 } } F. Mahler, K. Reimann, M. Woerner, T. Elsaesser, C. Flytzanis, and K. Biermann TY - JOUR AU - F. Mahler AU - K. Reimann AU - M. Woerner AU - T. Elsaesser AU - C. Flytzanis AU - K. Biermann TI - Impact of piezoelectric ﬁelds on coherent zone-folded phonons in GaAs/AlAs superlattices JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 100 SP - 121302 PY - 2019/09/12

3	Autor	P. L. J. Helgers , H. Sanada , Y. Kunihashi , A. Rubino , C. J. B. Ford , K. Biermann , P. V. Santos
	Titel	Sidewall Quantum Wires on GaAs(001) Substrates
	Source	Phys. Rev. Appl. , 11 , 064017 ( 2019 )
DOI : 10.1103/PhysRevApplied.11.064017 \| arxiv: 1901.02735 \| 3077 Cite : Bibtex RIS @article{ author = { P. L. J. Helgers and H. Sanada and Y. Kunihashi and A. Rubino and C. J. B. Ford and K. Biermann and P. V. Santos }, title = { Sidewall Quantum Wires on GaAs(001) Substrates }, journal = { Physical Review Applied }, volume = { 11 }, year = { 2019 }, pages = { 064017 } } P. L. J. Helgers, H. Sanada, Y. Kunihashi, A. Rubino, C. J. B. Ford, K. Biermann, and P. V. Santos TY - JOUR AU - P. L. J. Helgers AU - H. Sanada AU - Y. Kunihashi AU - A. Rubino AU - C. J. B. Ford AU - K. Biermann AU - P. V. Santos TI - Sidewall Quantum Wires on GaAs(001) Substrates JF - Physical Review Applied JA - Phys. Rev. Appl. J1 - VL - 11 SP - 064017 PY - 2019/06/10

2	Autor	A. S. Kuznetsov , P. L. J. Helgers , K. Biermann , P. V. Santos
	Titel	Quantum confinement of exciton-polaritons in structured (Al,Ga)As microcavities
	Source	Phys. Rev. B , 97 , 195309 ( 2018 )
DOI : 10.1103/PhysRevB.97.195309 \| Download: PDF \| 2976 Cite : Bibtex RIS @article{ author = { A. S. Kuznetsov and P. L. J. Helgers and K. Biermann and P. V. Santos }, title = { Quantum confinement of exciton-polaritons in structured (Al,Ga)As microcavities }, journal = { Physical Review B: Solid State }, volume = { 97 }, year = { 2018 }, pages = { 195309 } } A. S. Kuznetsov, P. L. J. Helgers, K. Biermann, and P. V. Santos TY - JOUR AU - A. S. Kuznetsov AU - P. L. J. Helgers AU - K. Biermann AU - P. V. Santos TI - Quantum confinement of exciton-polaritons in structured (Al,Ga)As microcavities JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 97 SP - 195309 PY - 2018/05/18

1	Autor	K. Biermann , E. A. Cerda-Méndez , M. Höricke , P. V. Santos , R. Hey
	Titel	Controlled growth of exciton-polariton microcavities using in-situ spectral reflectivity measurements
	Source	J. Cryst. Growth , 323 , 56 ( 2011 )
2170 Cite : Bibtex RIS @article{ author = { K. Biermann and E. A. Cerda-Méndez and M. Höricke and P. V. Santos and R. Hey }, title = { Controlled growth of exciton-polariton microcavities using in-situ spectral reflectivity measurements }, journal = { Journal of Crystal Growth }, volume = { 323 }, year = { 2011 }, pages = { 56 } } K. Biermann, E. A. Cerda-Méndez, M. Höricke, P. V. Santos, and R. Hey TY - JOUR AU - K. Biermann AU - E. A. Cerda-Méndez AU - M. Höricke AU - P. V. Santos AU - R. Hey TI - Controlled growth of exciton-polariton microcavities using in-situ spectral reflectivity measurements JF - Journal of Crystal Growth JA - J. Cryst. Growth J1 - JGC VL - 323 SP - 56 PY - 2011/01/01