---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '22145'
abstract:
- lang: eng
  text: An in-operando electro-intercalation method for the on-chip synthesis of alkali-metal-intercalated
    materials and their Raman spectroscopic and transport characterization in ultrahigh
    vacuum (UHV) is developed. We apply this method to synthesize fulleride superconductors
    via Rb+ intercalation into a C60 film. During the intercalation, we monitor the
    stoichiometry via UHV-Raman spectroscopy and probe superconductivity via transport
    measurements. An increase of the superconducting transition temperature from 7.0
    K to 14.5 K is observed when the stoichiometry is tuned from Rb2.7C60 to Rb3C60.
    In our experiment, an ionic Rb+ flux into the host material is induced by an applied
    electronic current via a Butler–Volmer-type mechanism. Electro-intercalation captivates
    through improved stoichiometric precision, the ability to smoothly vary stoichiometry
    via duration of current application, and the absence of a lower limit of the volume
    of the host material. It represents a powerful concept for the on-chip synthesis
    of intercalated materials, battery research, and beyond.
acknowledgement: 'A.G. and K.P.S. acknowledge the DFG through CRC 1238 (277146847,
  A01) and DFG project SE 2575. K.P.S., P.S., and A.G. would like to thank the Center
  for Micro- and Nanostructures (ZMNS) for providing the cleanroom facilities. K.P.S.
  thanks Daniele Nazari for help with ALD of Al2O3 films. Financial support from FFG
  Austria (CrystalGate) is acknowledged. A.G. thanks John Weaver for discussions about
  the structure of RbxC60. B.C. acknowledges support from the NOMIS Foundation. First-principles
  simulations were supported as part of user project CNMS2025-R-03182 at the Center
  for Nanophase Materials Sciences (CNMS), which is a US Department of Energy, Office
  of Science User Facility at Oak Ridge National Laboratory. J.J. and J.H. acknowledge
  the computational resources provided by the ACCESS (Advanced Cyberinfrastructure
  Coordination Ecosystem: Services & Support) program through allocation TG-DMR110037;
  the National Energy Research Scientific Computing Center (NERSC), a DOE Office of
  Science User Facility supported under Contract No. DE-AC02-05CH11231, through NERSC
  award BES-ERCAP0031261; and the Compute and Data Environment for Science (CADES)
  Baseline at Oak Ridge National Laboratory, supported by the Office of Science of
  the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. The authors
  acknowledge TU Wien Bibliothek for financial support through its Open access funding
  provided by Technische Universitat Wien.'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Konstantin P.
  full_name: Shchukin, Konstantin P.
  last_name: Shchukin
- first_name: Oliver N.
  full_name: Gallego Lacey, Oliver N.
  last_name: Gallego Lacey
- first_name: Baptiste
  full_name: Coquinot, Baptiste
  id: f8417bd4-f599-11ee-a482-b927e3ed1e8e
  last_name: Coquinot
  orcid: 0000-0001-5524-596X
- first_name: Jacek
  full_name: Jakowski, Jacek
  last_name: Jakowski
- first_name: Jingsong
  full_name: Huang, Jingsong
  last_name: Huang
- first_name: Patrik
  full_name: Staudenmayer, Patrik
  last_name: Staudenmayer
- first_name: Yannic
  full_name: Falke, Yannic
  last_name: Falke
- first_name: Ram Prakash
  full_name: Pandeya, Ram Prakash
  last_name: Pandeya
- first_name: Alexander
  full_name: Grüneis, Alexander
  last_name: Grüneis
citation:
  ama: Shchukin KP, Gallego Lacey ON, Coquinot B, et al. On-chip tuning of superconductivity
    in fullerides via current-driven Rb+ intercalation. <i>ACS Nano</i>. 2026;20(24):17360-17372.
    doi:<a href="https://doi.org/10.1021/acsnano.6c02466">10.1021/acsnano.6c02466</a>
  apa: Shchukin, K. P., Gallego Lacey, O. N., Coquinot, B., Jakowski, J., Huang, J.,
    Staudenmayer, P., … Grüneis, A. (2026). On-chip tuning of superconductivity in
    fullerides via current-driven Rb+ intercalation. <i>ACS Nano</i>. American Chemical
    Society. <a href="https://doi.org/10.1021/acsnano.6c02466">https://doi.org/10.1021/acsnano.6c02466</a>
  chicago: Shchukin, Konstantin P., Oliver N. Gallego Lacey, Baptiste Coquinot, Jacek
    Jakowski, Jingsong Huang, Patrik Staudenmayer, Yannic Falke, Ram Prakash Pandeya,
    and Alexander Grüneis. “On-Chip Tuning of Superconductivity in Fullerides via
    Current-Driven Rb+ Intercalation.” <i>ACS Nano</i>. American Chemical Society,
    2026. <a href="https://doi.org/10.1021/acsnano.6c02466">https://doi.org/10.1021/acsnano.6c02466</a>.
  ieee: K. P. Shchukin <i>et al.</i>, “On-chip tuning of superconductivity in fullerides
    via current-driven Rb+ intercalation,” <i>ACS Nano</i>, vol. 20, no. 24. American
    Chemical Society, pp. 17360–17372, 2026.
  ista: Shchukin KP, Gallego Lacey ON, Coquinot B, Jakowski J, Huang J, Staudenmayer
    P, Falke Y, Pandeya RP, Grüneis A. 2026. On-chip tuning of superconductivity in
    fullerides via current-driven Rb+ intercalation. ACS Nano. 20(24), 17360–17372.
  mla: Shchukin, Konstantin P., et al. “On-Chip Tuning of Superconductivity in Fullerides
    via Current-Driven Rb+ Intercalation.” <i>ACS Nano</i>, vol. 20, no. 24, American
    Chemical Society, 2026, pp. 17360–72, doi:<a href="https://doi.org/10.1021/acsnano.6c02466">10.1021/acsnano.6c02466</a>.
  short: K.P. Shchukin, O.N. Gallego Lacey, B. Coquinot, J. Jakowski, J. Huang, P.
    Staudenmayer, Y. Falke, R.P. Pandeya, A. Grüneis, ACS Nano 20 (2026) 17360–17372.
das_tickbox: '0'
date_created: 2026-06-28T22:01:34Z
date_published: 2026-06-23T00:00:00Z
date_updated: 2026-06-29T09:00:33Z
day: '23'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1021/acsnano.6c02466
external_id:
  pmid:
  - '42260723'
file:
- access_level: open_access
  checksum: 01ec8ee6fab7bf563df7af13f6b43045
  content_type: application/pdf
  creator: dernst
  date_created: 2026-06-29T08:58:12Z
  date_updated: 2026-06-29T08:58:12Z
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file_date_updated: 2026-06-29T08:58:12Z
has_accepted_license: '1'
intvolume: '        20'
issue: '24'
keyword:
- fulleride
- intercalation
- alkali metal
- superconductivity
- Raman
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 17360-17372
pmid: 1
publication: ACS Nano
publication_identifier:
  eissn:
  - 1936-086X
  issn:
  - 1936-0851
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: yes
title: On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation
tmp:
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  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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 20
year: '2026'
...