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Journal Articles

Alloying during local droplet etching of AlGaAs surfaces with aluminium

M. Zocher, Ch. Heyn, W. Hansen
Journal: Journal of Applied Physics
J. Appl. Phys. 125, 025306 (2019)
https://doi.org/10.1063/1.5053464
Published: January 2019
View article titled, Alloying during local droplet etching of AlGaAs surfaces with aluminium
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Journal Articles

Droplet etched GaAs quantum dots close to surfaces and metallic interfaces

Ch. Heyn, M. Zocher, L. Pudewill, H. Runge, A. Küster, W. Hansen
Journal: Journal of Applied Physics
J. Appl. Phys. 121, 044306 (2017)
https://doi.org/10.1063/1.4974965
Published: January 2017
View article titled, Droplet etched GaAs quantum dots close to surfaces and metallic interfaces
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Journal Articles

Congruent evaporation temperature of molecular beam epitaxy grown GaAs (001) determined by local droplet etching

Ch. Heyn, D. E. Jesson
Journal: Applied Physics Letters
Appl. Phys. Lett. 107, 161601 (2015)
https://doi.org/10.1063/1.4934218
Published: October 2015
View article titled, Congruent evaporation temperature of molecular beam epitaxy grown GaAs (001) determined by local droplet etching
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Journal Articles

Electrical and terahertz magnetospectroscopy studies of laser-patterned micro- and nanostructures on InAs-based heterostructures

O. Chiatti, S. S. Buchholz, Ch. Heyn, W. Hansen, M. Pakmehr, B. D. McCombe, S. F. Fischer
Journal: Applied Physics Letters
Appl. Phys. Lett. 106, 052102 (2015)
https://doi.org/10.1063/1.4907571
Published: February 2015
View article titled, Electrical and terahertz magnetospectroscopy studies of laser-patterned micro- and nanostructures on InAs-based heterostructures
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Journal Articles

Local droplet etching – Nanoholes, quantum dots, and air-gap heterostructures

Ch. Heyn, D. Sonnenberg, A. Graf, J. Kerbst, A. Stemmann, W. Hansen
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1598, 91–94 (2014)
https://doi.org/10.1063/1.4878285
Published: May 2014
View article titled, Local droplet etching – Nanoholes, quantum dots, and air-gap heterostructures
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Journal Articles

Scaling of the structural characteristics of nanoholes created by local droplet etching

Ch. Heyn, S. Schnüll, W. Hansen
Journal: Journal of Applied Physics
J. Appl. Phys. 115, 024309 (2014)
https://doi.org/10.1063/1.4861722
Published: January 2014
View article titled, Scaling of the structural characteristics of nanoholes created by local droplet etching
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Journal Articles

Ballistic thermal point contacts made of GaAs nanopillars

Th. Bartsch, A. Wetzel, D. Sonnenberg, M. Schmidt, Ch. Heyn, W. Hansen
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1566, 243–244 (2013)
https://doi.org/10.1063/1.4848376
Published: December 2013
View article titled, Ballistic thermal point contacts made of GaAs nanopillars
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Journal Articles

High excitation power photoluminescence studies of ultra-low density GaAs quantum dots

D. Sonnenberg, A. Graf, V. Paulava, Ch. Heyn, W. Hansen
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1566, 431–432 (2013)
https://doi.org/10.1063/1.4848470
Published: December 2013
View article titled, High excitation power photoluminescence studies of ultra-low density GaAs quantum dots
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Journal Articles

Highly versatile ultra-low density GaAs quantum dots fabricated by filling of self-assembled nanoholes

D. Sonnenberg, A. Graf, V. Paulava, W. Hansen, Ch. Heyn
Journal: Applied Physics Letters
Appl. Phys. Lett. 101, 143106 (2012)
https://doi.org/10.1063/1.4756945
Published: October 2012
View article titled, Highly versatile ultra-low density GaAs quantum dots fabricated by filling of self-assembled nanoholes
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Journal Articles

Air-gap heterostructures

Ch. Heyn, M. Schmidt, S. Schwaiger, A. Stemmann, S. Mendach, W. Hansen
Journal: Applied Physics Letters
Appl. Phys. Lett. 98, 033105 (2011)
https://doi.org/10.1063/1.3544047
Published: January 2011
View article titled, Air-gap heterostructures
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Journal Articles

Magnetism in a Mn modulation-doped InAs/InGaAs heterostructure with a two-dimensional hole system

B. Rupprecht, W. Krenner, U. Wurstbauer, Ch. Heyn, T. Windisch, M. A. Wilde, W. Wegscheider, D. Grundler
Journal: Journal of Applied Physics
J. Appl. Phys. 107, 093711 (2010)
https://doi.org/10.1063/1.3388303
Published: May 2010
View article titled, Magnetism in a Mn modulation-doped InAs/InGaAs heterostructure with a two-dimensional hole system
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Journal Articles

Time-resolved studies of a rolled-up semiconductor microtube laser

Ch. Strelow, M. Sauer, S. Fehringer, T. Korn, C. Schüller, A. Stemmann, Ch. Heyn, D. Heitmann, T. Kipp
Journal: Applied Physics Letters
Appl. Phys. Lett. 95, 221115 (2009)
https://doi.org/10.1063/1.3271176
Published: December 2009
View article titled, Time-resolved studies of a rolled-up semiconductor microtube laser
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Journal Articles

Dynamics of self-assembled droplet etching

Ch. Heyn, A. Stemmann, W. Hansen
Journal: Applied Physics Letters
Appl. Phys. Lett. 95, 173110 (2009)
https://doi.org/10.1063/1.3254216
Published: October 2009
View article titled, Dynamics of self-assembled droplet etching
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Journal Articles

Local etching of nanoholes and quantum rings with In x Ga 1 − x droplets

A. Stemmann, T. Köppen, M. Grave, S. Wildfang, S. Mendach, W. Hansen, Ch. Heyn
Journal: Journal of Applied Physics
J. Appl. Phys. 106, 064315 (2009)
https://doi.org/10.1063/1.3225759
Published: September 2009
View article titled, Local etching of nanoholes and quantum rings with In x Ga 1 − x droplets
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Journal Articles

Neutron-irradiated Schottky diodes with self-assembled InAs quantum dots: Optical and electrical properties

A. Schramm, A. Tukiainen, M. Pessa, C. Konetzni, Ch. Heyn, W. Hansen
Journal: Journal of Applied Physics
J. Appl. Phys. 105, 104308 (2009)
https://doi.org/10.1063/1.3126711
Published: May 2009
View article titled, Neutron-irradiated Schottky diodes with self-assembled InAs quantum dots: Optical and electrical properties
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Journal Articles

Highly uniform and strain-free GaAs quantum dots fabricated by filling of self-assembled nanoholes

Ch. Heyn, A. Stemmann, T. Köppen, Ch. Strelow, T. Kipp, M. Grave, S. Mendach, W. Hansen
Journal: Applied Physics Letters
Appl. Phys. Lett. 94, 183113 (2009)
https://doi.org/10.1063/1.3133338
Published: May 2009
View article titled, Highly uniform and strain-free GaAs quantum dots fabricated by filling of self-assembled nanoholes
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Journal Articles

Influence of Ga coverage and As pressure on local droplet etching of nanoholes and quantum rings

Ch. Heyn, A. Stemmann, R. Eiselt, W. Hansen
Journal: Journal of Applied Physics
J. Appl. Phys. 105, 054316 (2009)
https://doi.org/10.1063/1.3079789
Published: March 2009
View article titled, Influence of Ga coverage and As pressure on local droplet etching of nanoholes and quantum rings
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Journal Articles

Local droplet etching of nanoholes and rings on GaAs and AlGaAs surfaces

A. Stemmann, Ch. Heyn, T. Köppen, T. Kipp, W. Hansen
Journal: Applied Physics Letters
Appl. Phys. Lett. 93, 123108 (2008)
https://doi.org/10.1063/1.2981517
Published: September 2008
View article titled, Local droplet etching of nanoholes and rings on GaAs and AlGaAs surfaces
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Journal Articles

InAs-coverage dependence of self-assembled quantum dot size, composition, and density

A. Zolotaryov, A. Schramm, Ch. Heyn, W. Hansen
Journal: Applied Physics Letters
Appl. Phys. Lett. 91, 083107 (2007)
https://doi.org/10.1063/1.2772758
Published: August 2007
View article titled, InAs-coverage dependence of self-assembled quantum dot size, composition, and density
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Journal Articles

Faceting during GaAs quantum dot self-assembly by droplet epitaxy

Ch. Heyn, A. Stemmann, A. Schramm, H. Welsch, W. Hansen, Á. Nemcsics
Journal: Applied Physics Letters
Appl. Phys. Lett. 90, 203105 (2007)
https://doi.org/10.1063/1.2737123
Published: May 2007
View article titled, Faceting during GaAs quantum dot self-assembly by droplet epitaxy
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