TY - GEN
A1 - Körner, Roman
A1 - Schwarz, Daniel
A1 - Fischer, Inga Anita
A1 - Augel, Lion
A1 - Bechler, Stefan
A1 - Hänel, Linda A.
A1 - Kern, Michael
A1 - Oehme, Michael
A1 - Rolseth, Erlend Granbo
A1 - Schwartz, Bernhard
A1 - Weißhaupt, David
A1 - Zhang, Wogong
A1 - Schulze, Jörg
T1 - The Zener-Emitter: A Novel Superluminescent Ge Optical Waveguide-Amplifier with 4.7 dB Gain at 92 mA Based on Free-Carrier Modulation by Drect Zener Tunneling Monolithically Integrated on Si
T2 - 2016 IEEE International Electronic Devices Meeting (IEDM), 3-7 Dec. 2016
Y1 - 2016
SN - 978-1-5090-3901-2
SN - 978-1-5090-3902-9
SP - 22.5.1
EP - 22.5.4
PB - IEEE
CY - Piscataway, NJ
ER -
TY - GEN
A1 - Funk, Hannes S.
A1 - Kern, Michael
A1 - Weisshaupt, David
A1 - Sürgers, Christoph
A1 - Fischer, Inga Anita
A1 - Oehme, Michael
A1 - Slageren, Joris van
A1 - Schulze, Jörg
T1 - Magnetic Characterization of a Mn Based Ferromagnet on SixGe(1-x-y)Sny with High Sn Content
T2 - ECS Transactions
Y1 - 2019
U6 - https://doi.org/10.1149/09301.0101ecst
SN - 1938-5862
SN - 1938-6737
VL - 93
IS - 1
SP - 101
EP - 104
ER -
TY - GEN
A1 - Weißhaupt, David
A1 - Funk, Hannes S.
A1 - Kern, Michal
A1 - Dettling, Marco M.
A1 - Schwarz, Daniel
A1 - Oehme, Michael
A1 - Sürgers, Christoph
A1 - Slageren, Joris van
A1 - Fischer, Inga Anita
A1 - Schulze, Jörg
T1 - Weak localization and weak antilocalization in doped Ge1-ySny layers with up to 8% Sn
T2 - Journal of Physics: Condensed Matter
Y1 - 2021
U6 - https://doi.org/10.1088/1361-648X/abcb68
SN - 1361-648X
VL - 33
IS - 8
ER -
TY - GEN
A1 - Bergmann, Fritz
A1 - Ayasse, Markus
A1 - Schlipf, Jon
A1 - Mörz, Florian
A1 - Weißhaupt, David
A1 - Oehme, Michael
A1 - Prucnal, Slawomir
A1 - Kawaguchi, Yuma
A1 - Schwarz, Daniel
A1 - Fischer, Inga Anita
A1 - Schulze, Jörg
T1 - Plasmonic gratings from highly doped Ge1−ySny films on Si
T2 - Journal of Physics D: Applied Physics
Y1 - 2021
SN - 1361-6463
VL - 54
IS - 44
ER -
TY - GEN
A1 - Weißhaupt, David
A1 - Funk, Hannes S.
A1 - Sürgers, Christoph
A1 - Fischer, Gerda
A1 - Oehme, Michael
A1 - Schwarz, Daniel
A1 - Fischer, Inga Anita
A1 - Slageren, Joris van
A1 - Schulze, Jörg
T1 - Formation of Mn5Ge3 on a Recess-Etched Ge (111) Quantum-Well Structure for Semiconductor Spintronics
T2 - 44th International Convention on Information, Communication and Electronic Technology, MIPRO 2021, Opatija, Croatia, September 27 - Oct. 1, 2021
Y1 - 2021
SN - 978-1-6654-4761-4
U6 - https://doi.org/10.23919/MIPRO52101.2021.9596924.
SN - 978-953-233-101-1
SP - 45
EP - 49
PB - Piscataway
CY - IEEE
ER -
TY - GEN
A1 - Funk, Hannes S.
A1 - Kern, Michael
A1 - Weißhaupt, David
A1 - Sürgers, Christoph
A1 - Fischer, Inga Anita
A1 - Oehme, Michael
A1 - Slageren, Joris van
A1 - Schulze, Jörg
T1 - Composition and magnetic properties of thin films grown by interdiffusion of Mn and Sn-Rich, Ge lattice matched SixGe1-x-ySny layers
T2 - Journal of Magnetism and Magnetic Materials
Y1 - 2022
U6 - https://doi.org/10.1016/j.jmmm.2021.168731.
SN - 0304-8853
VL - 546
ER -
TY - GEN
A1 - Berkmann, Fritz
A1 - Augel, Lion
A1 - Hack, Michael
A1 - Kawaguchi, Yuma
A1 - Weißhaupt, David
A1 - Fischer, Inga Anita
A1 - Schulze, Jörg
T1 - Optimization of fully integrated Al nanohole array-based refractive index sensors for use with a LED light source Fritz Berkmann
T2 - IEEE Photonics Journal
KW - Sensors
KW - Refractive index
KW - Optical variables control
KW - Optical refraction
KW - Optical device fabrication
KW - Germanium
KW - Solid modeling
Y1 - 2022
UR - https://ieeexplore.ieee.org/document/9781306
U6 - https://doi.org/10.1109/JPHOT.2022.3177354
SN - 1943-0655
VL - 14
IS - 3
SP - 1
EP - 8
ER -
TY - GEN
A1 - Weißhaupt, David
A1 - Sürgers, Christoph
A1 - Bloos, Dominik
A1 - Funk, Hannes Simon
A1 - Oehme, Michael
A1 - Fischer, Gerda
A1 - Schubert, Markus Andreas
A1 - Wenger, Christian
A1 - van Slageren, Joris
A1 - Fischer, Inga Anita
A1 - Schulze, Jörg
T1 - Lateral Mn5Ge3 spin-valve in contact with a high-mobility Ge two-dimensional hole gas
T2 - Semiconductor Science and Technology
N2 - Abstract
Ge two-dimensional hole gases (2DHG) in strained modulation-doped quantum-wells represent a promising material platform for future spintronic applications due to their excellent spin transport properties and the theoretical possibility of efficient spin manipulation. Due to the continuous development of epitaxial growth recipes extreme high hole mobilities and low effective masses can be achieved, promising an efficient spin transport. Furthermore, the Ge 2DHG can be integrated in the well-established industrial complementary metal-oxide-semiconductor (CMOS) devices technology. However, efficient electrical spin injection into a Ge 2DHG—an essential prerequisite for the realization of spintronic devices—has not yet been demonstrated. In this work, we report the fabrication and low-temperature magnetoresistance (MR) measurements of a laterally structured Mn5Ge3/Ge 2DHG/ Mn5Ge3 device. The ferromagnetic Mn5Ge3 contacts are grown directly into the Ge quantum well by means of an interdiffusion process with a spacing of approximately 130 nm, forming a direct electrical contact between the ferromagnetic metal and the Ge 2DHG. Here, we report for the first time a clear MR signal for temperatures below 13 K possibly arising from successful spin injection into the high mobility Ge 2DHG. The results represent a step forward toward the realization of CMOS compatible spintronic devices based on a 2DHG.
KW - two-dimensional hole gas
Y1 - 2024
U6 - https://doi.org/10.1088/1361-6641/ad8d06
SN - 0268-1242
VL - 39
IS - 12
SP - 1
EP - 10
PB - IOP Publishing
ER -
TY - GEN
A1 - Weißhaupt, David
A1 - Funk, Hannes S.
A1 - Oehme, Michael
A1 - Bloos, Dominik
A1 - Berkmann, Fritz
A1 - Seidel, Lukas
A1 - Fischer, Inga Anita
A1 - Schulze, Jörg
T1 - High mobility Ge 2DHG based MODFETs for low-temperature applications
T2 - Semiconductor Science and Technology
Y1 - 2023
U6 - https://doi.org/10.1088/1361-6641/acb22f
SN - 1361-6641
VL - 38
IS - 3
ER -
TY - GEN
A1 - Schlipf, Jon
A1 - Berkmann, Fritz
A1 - Yamamoto, Yuji
A1 - Reichenbach, Marc
A1 - Veleski, Mitko
A1 - Kawaguchi, Yuma
A1 - Mörz, Florian
A1 - Tomm, Jens W.
A1 - Weißhaupt, David
A1 - Fischer, Inga Anita
T1 - Robust Si/Ge heterostructure metasurfaces as building blocks for wavelength-selective photodetectors
T2 - Applied Physics Letters
Y1 - 2023
U6 - https://doi.org/10.1063/5.0134458
SN - 1077-3118
VL - 122
IS - 12
ER -