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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

Interface matching and intermixing of thin MgO barriers and ferromagnetic layers deposited on GaAs (001)

R. Tholapi, I. A. Karateev, B. S. Roshchin, V. E. Asadchikov, T. Slobodskyy, W. Hansen, A. L. Vasiliev
Journal: Journal of Applied Physics
J. Appl. Phys. 121, 205308 (2017)
https://doi.org/10.1063/1.4984754
Published: May 2017
View article titled, Interface matching and intermixing of thin MgO barriers and ferromagnetic layers deposited on GaAs (001)
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Journal Articles

Time resolved small angle X-ray scattering experiments performed on detonating explosives at the advanced photon source: Calculation of the time and distance between the detonation front and the x-ray beam

R. L. Gustavsen, D. M. Dattelbaum, E. B. Watkins, M. A. Firestone, D. W. Podlesak, B. J. Jensen, B. S. Ringstrand, R. C. Huber, J. T. Mang, C. E. Johnson, K. A. Velizhanin, T. M. Willey, D. W. Hansen, C. M. May, R. L. Hodgin, M. Bagge-Hansen, A. W. van Buuren, L. M. Lauderbach, A. C. Jones, T. J. Graber, N. Sinclair, S. Seifert, T. Gog
Journal: Journal of Applied Physics
J. Appl. Phys. 121, 105902 (2017)
https://doi.org/10.1063/1.4978036
Published: March 2017
View article titled, Time resolved small angle X-ray scattering experiments performed on detonating explosives at the advanced photon source: Calculation of the time and distance between the detonation front and the x-ray beam
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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

Effect of low-temperature post-growth annealing on anisotropic strain in epitaxial Fe layers deposited on GaAs(001)

R. Tholapi, L. Liefeith, G. Ekindorf, K. Perumal, T. Slobodskyy, W. Hansen
Journal: Journal of Applied Physics
J. Appl. Phys. 119, 245304 (2016)
https://doi.org/10.1063/1.4954872
Published: June 2016
View article titled, Effect of low-temperature post-growth annealing on anisotropic strain in epitaxial Fe layers deposited on GaAs(001)
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Journal Articles

The g-factor of quasi-two-dimensional electrons in InAs/InGaAs/InAlAs inserted-channels

Mehdi Pakmehr, A. Khaetskii, B. D. McCombe, N. Bhandari, M. Cahay, Olivio Chiatti, S. F. Fischer, C. Heyn, W. Hansen
Journal: Applied Physics Letters
Appl. Phys. Lett. 107, 082107 (2015)
https://doi.org/10.1063/1.4929373
Published: August 2015
View article titled, The g-factor of quasi-two-dimensional electrons in InAs/InGaAs/InAlAs inserted-channels
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Journal Articles

Versatile atomic force microscopy setup combined with micro-focused X-ray beam

T. Slobodskyy, A. V. Zozulya, R. Tholapi, L. Liefeith, M. Fester, M. Sprung, W. Hansen
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 86, 065104 (2015)
https://doi.org/10.1063/1.4922605
Published: June 2015
View article titled, Versatile atomic force microscopy setup combined with micro-focused X-ray beam
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Includes: Supplementary data
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

Spin and charge transport in double-junction Fe/MgO/GaAs/MgO/Fe heterostructures

S. Wolski, T. Szczepański, V. K. Dugaev, J. Barnaś, B. Landgraf, T. Slobodskyy, W. Hansen
Journal: Journal of Applied Physics
J. Appl. Phys. 117, 043908 (2015)
https://doi.org/10.1063/1.4906397
Published: January 2015
View article titled, Spin and charge transport in double-junction Fe/MgO/GaAs/MgO/Fe 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

How predictable is DNI? An evaluation of day ahead DNI forecasts from four different providers

Tobias Gerstmaier, Michael Bührer, Michael Röttger, Andreas Gombert, Clifford W. Hansen, Joshua S. Stein
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1477, 305–308 (2012)
https://doi.org/10.1063/1.4753892
Published: October 2012
View article titled, How predictable is DNI? An evaluation of day ahead DNI forecasts from four different providers
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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

Enhancing the visibility of graphene on GaAs

K. Peters, A. Tittel, N. Gayer, A. Graf, V. Paulava, U. Wurstbauer, W. Hansen
Journal: Applied Physics Letters
Appl. Phys. Lett. 99, 191912 (2011)
https://doi.org/10.1063/1.3660584
Published: November 2011
View article titled, Enhancing the visibility of graphene on GaAs
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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

Strong localization effect in magnetic two-dimensional hole systems

U. Wurstbauer, S. Knott, A. Zolotaryov, D. Schuh, W. Hansen, W. Wegscheider
Journal: Applied Physics Letters
Appl. Phys. Lett. 96, 022103 (2010)
https://doi.org/10.1063/1.3291673
Published: January 2010
View article titled, Strong localization effect in magnetic two-dimensional hole systems
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Journal Articles

DEFLAGRATION RATES OF SECONDARY EXPLOSIVES UNDER STATIC MPA—GPA PRESSURE

Joseph M. Zaug, Christopher E. Young, Gregory T. Long, Jon L. Maienschein, Elizabeth A. Glascoe, Donald W. Hansen, Jeffery F. Wardell, C. Kevin Black, Gregory B. Sykora
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1195, 420–423 (2009)
https://doi.org/10.1063/1.3295162
Published: December 2009
View article titled, DEFLAGRATION RATES OF SECONDARY EXPLOSIVES UNDER STATIC MPA—GPA PRESSURE
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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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