---
_id: '1328'
abstract:
- lang: eng
text: Hole spins have gained considerable interest in the past few years due to
their potential for fast electrically controlled qubits. Here, we study holes
confined in Ge hut wires, a so-far unexplored type of nanostructure. Low-temperature
magnetotransport measurements reveal a large anisotropy between the in-plane and
out-of-plane g-factors of up to 18. Numerical simulations verify that this large
anisotropy originates from a confined wave function of heavy-hole character. A
light-hole admixture of less than 1% is estimated for the states of lowest energy,
leading to a surprisingly large reduction of the out-of-plane g-factors compared
with those for pure heavy holes. Given this tiny light-hole contribution, the
spin lifetimes are expected to be very long, even in isotopically nonpurified
samples.
acknowledgement: 'The work was supported by the EC FP7 ICT project SiSPIN no. 323841,
the EC FP7 ICT project PAMS no. 610446, the ERC Starting Grant no. 335497, the FWF-I-1190-N20
project, and the Swiss NSF. We acknowledge F. Schäffler for fruitful discussions
related to the hut wire growth and for giving us access to the molecular beam epitaxy
system, M. Schatzl for her support in electron beam lithography, and V. Jadris ̌ko
for helping us with the COMSOL simulations. Finally, we thank G. Bauer for his continuous
support. '
article_processing_charge: No
author:
- first_name: Hannes
full_name: Watzinger, Hannes
id: 35DF8E50-F248-11E8-B48F-1D18A9856A87
last_name: Watzinger
- first_name: Christoph
full_name: Kloeffel, Christoph
last_name: Kloeffel
- first_name: Lada
full_name: Vukusic, Lada
id: 31E9F056-F248-11E8-B48F-1D18A9856A87
last_name: Vukusic
orcid: 0000-0003-2424-8636
- first_name: Marta
full_name: Rossell, Marta
last_name: Rossell
- first_name: Violetta
full_name: Sessi, Violetta
last_name: Sessi
- first_name: Josip
full_name: Kukucka, Josip
id: 3F5D8856-F248-11E8-B48F-1D18A9856A87
last_name: Kukucka
- first_name: Raimund
full_name: Kirchschlager, Raimund
last_name: Kirchschlager
- first_name: Elisabeth
full_name: Lausecker, Elisabeth
id: 33662F76-F248-11E8-B48F-1D18A9856A87
last_name: Lausecker
- first_name: Alisha
full_name: Truhlar, Alisha
id: 49CBC780-F248-11E8-B48F-1D18A9856A87
last_name: Truhlar
- first_name: Martin
full_name: Glaser, Martin
last_name: Glaser
- first_name: Armando
full_name: Rastelli, Armando
last_name: Rastelli
- first_name: Andreas
full_name: Fuhrer, Andreas
last_name: Fuhrer
- first_name: Daniel
full_name: Loss, Daniel
last_name: Loss
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
citation:
ama: Watzinger H, Kloeffel C, Vukušić L, et al. Heavy-hole states in germanium hut
wires. Nano Letters. 2016;16(11):6879-6885. doi:10.1021/acs.nanolett.6b02715
apa: Watzinger, H., Kloeffel, C., Vukušić, L., Rossell, M., Sessi, V., Kukucka,
J., … Katsaros, G. (2016). Heavy-hole states in germanium hut wires. Nano Letters.
American Chemical Society. https://doi.org/10.1021/acs.nanolett.6b02715
chicago: Watzinger, Hannes, Christoph Kloeffel, Lada Vukušić, Marta Rossell, Violetta
Sessi, Josip Kukucka, Raimund Kirchschlager, et al. “Heavy-Hole States in Germanium
Hut Wires.” Nano Letters. American Chemical Society, 2016. https://doi.org/10.1021/acs.nanolett.6b02715.
ieee: H. Watzinger et al., “Heavy-hole states in germanium hut wires,” Nano
Letters, vol. 16, no. 11. American Chemical Society, pp. 6879–6885, 2016.
ista: Watzinger H, Kloeffel C, Vukušić L, Rossell M, Sessi V, Kukucka J, Kirchschlager
R, Lausecker E, Truhlar A, Glaser M, Rastelli A, Fuhrer A, Loss D, Katsaros G.
2016. Heavy-hole states in germanium hut wires. Nano Letters. 16(11), 6879–6885.
mla: Watzinger, Hannes, et al. “Heavy-Hole States in Germanium Hut Wires.” Nano
Letters, vol. 16, no. 11, American Chemical Society, 2016, pp. 6879–85, doi:10.1021/acs.nanolett.6b02715.
short: H. Watzinger, C. Kloeffel, L. Vukušić, M. Rossell, V. Sessi, J. Kukucka,
R. Kirchschlager, E. Lausecker, A. Truhlar, M. Glaser, A. Rastelli, A. Fuhrer,
D. Loss, G. Katsaros, Nano Letters 16 (2016) 6879–6885.
corr_author: '1'
date_created: 2018-12-11T11:51:24Z
date_published: 2016-09-22T00:00:00Z
date_updated: 2025-09-22T08:24:38Z
day: '22'
ddc:
- '539'
department:
- _id: GeKa
doi: 10.1021/acs.nanolett.6b02715
ec_funded: 1
external_id:
isi:
- '000387625000025'
file:
- access_level: open_access
checksum: b63feece90d7b620ece49ca632e34ff3
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:14:04Z
date_updated: 2020-07-14T12:44:44Z
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file_name: IST-2016-664-v1+1_acs.nanolett.6b02715.pdf
file_size: 535121
relation: main_file
file_date_updated: 2020-07-14T12:44:44Z
has_accepted_license: '1'
intvolume: ' 16'
isi: 1
issue: '11'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '09'
oa: 1
oa_version: Published Version
page: 6879 - 6885
project:
- _id: 25517E86-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '335497'
name: Towards Spin qubits and Majorana fermions in Germanium self assembled hut-wires
publication: Nano Letters
publication_status: published
publisher: American Chemical Society
publist_id: '5941'
pubrep_id: '664'
quality_controlled: '1'
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scopus_import: '1'
status: public
title: Heavy-hole states in germanium hut wires
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
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...