---
_id: '17235'
abstract:
- lang: eng
text: We demonstrate ion irradiation by argon or gallium as a wafer-scale post-processing
method to increase disorder in superconducting thin films. We study several widely
used superconductors, both single-elements and compounds. We show that ion irradiation
increases normal-state resistivity in all our films, which is expected to enable
tuning their superconducting properties, for example, toward a higher kinetic
inductance. We observe an increase in superconducting transition temperature for
Al and MoSi and a decrease for Nb, NbN, and TiN. In MoSi, ion irradiation also
improves the mixing of the two materials. We demonstrate the fabrication of an
amorphous and homogeneous film of MoSi with uniform thickness, which is promising,
for example, for superconducting nanowire single-photon detectors.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: We thank J. A. Sauls for useful discussions. For funding of our research
project, we acknowledge the European Union’s Horizon 2020 Research and Innovation
Program under Grant Agreement Nos. 862660/Quantum e-leaps, 899558/aCryComm, 766853/EFINED,
and ECSEL programme 101007322/MatQu. This project has also received funding from
Business Finland through Quantum Technologies Industrial (QuTI) Project No. 128291
and from Research Council of Finland through Grant Nos. 310909, 350220 and Finnish
Quantum Flagship project 359284. This work was performed as part of the Research
Council of Finland Centres of Excellence program (Project Nos. 336817, 336819, 352934,
and 352935). We also acknowledge funding from an internal strategic innovation project
of VTT related to the development of quantum computing technologies. This research
was supported by the Scientific Service Units of IST Austria through resources provided
by Electron Microscopy Facility. J. Senior acknowledges funding from the European
Union’s Horizon 2020 Research and Innovation Program under the Marie Skłodowska-Curie
Grant Agreement No. 754411. A. Ronzani acknowledges funding from Research Council
of Finland (Research Fellowship Project No. 356542).
article_number: '071101'
article_processing_charge: Yes
article_type: original
author:
- first_name: Katja
full_name: Kohopää, Katja
last_name: Kohopää
- first_name: Alberto
full_name: Ronzani, Alberto
last_name: Ronzani
- first_name: Robab Najafi
full_name: Jabdaraghi, Robab Najafi
last_name: Jabdaraghi
- first_name: Arijit
full_name: Bera, Arijit
last_name: Bera
- first_name: Mário
full_name: Ribeiro, Mário
last_name: Ribeiro
- first_name: Dibyendu
full_name: Hazra, Dibyendu
last_name: Hazra
- first_name: Jorden L
full_name: Senior, Jorden L
id: 5479D234-2D30-11EA-89CC-40953DDC885E
last_name: Senior
orcid: 0000-0002-0672-9295
- first_name: Mika
full_name: Prunnila, Mika
last_name: Prunnila
- first_name: Joonas
full_name: Govenius, Joonas
last_name: Govenius
- first_name: Janne S.
full_name: Lehtinen, Janne S.
last_name: Lehtinen
- first_name: Antti
full_name: Kemppinen, Antti
last_name: Kemppinen
citation:
ama: Kohopää K, Ronzani A, Jabdaraghi RN, et al. Effect of ion irradiation on superconducting
thin films. APL Materials. 2024;12(7). doi:10.1063/5.0202851
apa: Kohopää, K., Ronzani, A., Jabdaraghi, R. N., Bera, A., Ribeiro, M., Hazra,
D., … Kemppinen, A. (2024). Effect of ion irradiation on superconducting thin
films. APL Materials. AIP Publishing. https://doi.org/10.1063/5.0202851
chicago: Kohopää, Katja, Alberto Ronzani, Robab Najafi Jabdaraghi, Arijit Bera,
Mário Ribeiro, Dibyendu Hazra, Jorden L Senior, et al. “Effect of Ion Irradiation
on Superconducting Thin Films.” APL Materials. AIP Publishing, 2024. https://doi.org/10.1063/5.0202851.
ieee: K. Kohopää et al., “Effect of ion irradiation on superconducting thin
films,” APL Materials, vol. 12, no. 7. AIP Publishing, 2024.
ista: Kohopää K, Ronzani A, Jabdaraghi RN, Bera A, Ribeiro M, Hazra D, Senior JL,
Prunnila M, Govenius J, Lehtinen JS, Kemppinen A. 2024. Effect of ion irradiation
on superconducting thin films. APL Materials. 12(7), 071101.
mla: Kohopää, Katja, et al. “Effect of Ion Irradiation on Superconducting Thin Films.”
APL Materials, vol. 12, no. 7, 071101, AIP Publishing, 2024, doi:10.1063/5.0202851.
short: K. Kohopää, A. Ronzani, R.N. Jabdaraghi, A. Bera, M. Ribeiro, D. Hazra, J.L.
Senior, M. Prunnila, J. Govenius, J.S. Lehtinen, A. Kemppinen, APL Materials 12
(2024).
date_created: 2024-07-14T22:01:11Z
date_published: 2024-07-01T00:00:00Z
date_updated: 2025-09-08T08:10:58Z
day: '01'
ddc:
- '530'
department:
- _id: AnHi
doi: 10.1063/5.0202851
ec_funded: 1
external_id:
isi:
- '001260942200003'
file:
- access_level: open_access
checksum: 32a5cdf0ea9c937f806b6039f3219917
content_type: application/pdf
creator: dernst
date_created: 2024-07-16T06:30:30Z
date_updated: 2024-07-16T06:30:30Z
file_id: '17244'
file_name: 2024_APLMaterial_Kohopaa.pdf
file_size: 9408198
relation: main_file
success: 1
file_date_updated: 2024-07-16T06:30:30Z
fulldoi: https://doi.org/10.1063/5.0202851
has_accepted_license: '1'
intvolume: ' 12'
isi: 1
issue: '7'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: APL Materials
publication_identifier:
eissn:
- 2166-532X
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Effect of ion irradiation on superconducting thin films
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
volume: 12
year: '2024'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '383'
abstract:
- lang: eng
text: In the quest for more efficient thermoelectric material able to convert thermal
to electrical energy and vice versa, composites that combine a semiconductor host
having a large Seebeck coefficient with metal nanodomains that provide phonon
scattering and free charge carriers are particularly appealing. Here, we present
our experimental results on the thermal and electrical transport properties of
PbS-metal composites produced by a versatile particle blending procedure, and
where the metal work function allows injecting electrons to the intrinsic PbS
host. We compare the thermoelectric performance of composites with microcrystalline
or nanocrystalline structures. The electrical conductivity of the microcrystalline
host can be increased several orders of magnitude with the metal inclusion, while
relatively high Seebeck coefficient can be simultaneously conserved. On the other
hand, in nanostructured materials, the host crystallites are not able to sustain
a band bending at its interface with the metal, becoming flooded with electrons.
This translates into even higher electrical conductivities than the microcrystalline
material, but at the expense of lower Seebeck coefficient values.
article_processing_charge: No
article_type: original
author:
- first_name: Yu
full_name: Liu, Yu
id: 2A70014E-F248-11E8-B48F-1D18A9856A87
last_name: Liu
orcid: 0000-0001-7313-6740
- first_name: Doris
full_name: Cadavid, Doris
last_name: Cadavid
- first_name: Maria
full_name: Ibanez Sabate, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibanez Sabate
orcid: 0000-0001-5013-2843
- first_name: Silvia
full_name: Ortega, Silvia
last_name: Ortega
- first_name: Sara
full_name: Márti Sánchez, Sara
last_name: Márti Sánchez
- first_name: Oleksander
full_name: Dobrozhan, Oleksander
last_name: Dobrozhan
- first_name: Maksym
full_name: Kovalenko, Maksym
last_name: Kovalenko
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Andreu
full_name: Cabot, Andreu
last_name: Cabot
citation:
ama: Liu Y, Cadavid D, Ibáñez M, et al. Thermoelectric properties of semiconductor-metal
composites produced by particle blending. Applied Physics Letters. 2016;4(10).
doi:10.1063/1.4961679
apa: Liu, Y., Cadavid, D., Ibáñez, M., Ortega, S., Márti Sánchez, S., Dobrozhan,
O., … Cabot, A. (2016). Thermoelectric properties of semiconductor-metal composites
produced by particle blending. Applied Physics Letters. American Institute
of Physics. https://doi.org/10.1063/1.4961679
chicago: Liu, Yu, Doris Cadavid, Maria Ibáñez, Silvia Ortega, Sara Márti Sánchez,
Oleksander Dobrozhan, Maksym Kovalenko, Jordi Arbiol, and Andreu Cabot. “Thermoelectric
Properties of Semiconductor-Metal Composites Produced by Particle Blending.” Applied
Physics Letters. American Institute of Physics, 2016. https://doi.org/10.1063/1.4961679.
ieee: Y. Liu et al., “Thermoelectric properties of semiconductor-metal composites
produced by particle blending,” Applied Physics Letters, vol. 4, no. 10.
American Institute of Physics, 2016.
ista: Liu Y, Cadavid D, Ibáñez M, Ortega S, Márti Sánchez S, Dobrozhan O, Kovalenko
M, Arbiol J, Cabot A. 2016. Thermoelectric properties of semiconductor-metal composites
produced by particle blending. Applied Physics Letters. 4(10).
mla: Liu, Yu, et al. “Thermoelectric Properties of Semiconductor-Metal Composites
Produced by Particle Blending.” Applied Physics Letters, vol. 4, no. 10,
American Institute of Physics, 2016, doi:10.1063/1.4961679.
short: Y. Liu, D. Cadavid, M. Ibáñez, S. Ortega, S. Márti Sánchez, O. Dobrozhan,
M. Kovalenko, J. Arbiol, A. Cabot, Applied Physics Letters 4 (2016).
date_created: 2018-12-11T11:46:09Z
date_published: 2016-08-29T00:00:00Z
date_updated: 2026-05-12T13:05:12Z
day: '29'
doi: 10.1063/1.4961679
extern: '1'
fulldoi: https://doi.org/10.1063/1.4961679
intvolume: ' 4'
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1063/1.4961679
month: '08'
oa: 1
oa_version: Published Version
publication: Applied Physics Letters
publication_identifier:
eissn:
- 2166-532X
publication_status: published
publisher: American Institute of Physics
publist_id: '7446'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Thermoelectric properties of semiconductor-metal composites produced by particle
blending
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: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 4
year: '2016'
...