---
OA_place: repository
_id: '19550'
abstract:
- lang: eng
  text: "We introduce a multi-band BCS free energy functional and prove that for a\r\nmulti-band
    superconductor the effect of inter-band coupling can only increase\r\nthe critical
    temperature, irrespective of its attractive or repulsive nature\r\nand its strength.
    Further, for weak coupling and weaker inter-band coupling, we\r\nprove that the
    dependence of the increase in critical temperature on the\r\ninter-band coupling
    is (1) linear, if there are two or more equally strongly\r\nsuperconducting bands,
    or (2) quadratic, if there is only one dominating band."
article_processing_charge: No
arxiv: 1
author:
- first_name: Sven Joscha
  full_name: Henheik, Sven Joscha
  id: 31d731d7-d235-11ea-ad11-b50331c8d7fb
  last_name: Henheik
  orcid: 0000-0003-1106-327X
- first_name: Edwin
  full_name: Langmann, Edwin
  last_name: Langmann
- first_name: Asbjørn Bækgaard
  full_name: Lauritsen, Asbjørn Bækgaard
  id: e1a2682f-dc8d-11ea-abe3-81da9ac728f1
  last_name: Lauritsen
  orcid: 0000-0003-4476-2288
citation:
  ama: Henheik SJ, Langmann E, Lauritsen AB. Multi-band superconductors have enhanced
    critical temperatures. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/arXiv.2409.17297">10.48550/arXiv.2409.17297</a>
  apa: Henheik, S. J., Langmann, E., &#38; Lauritsen, A. B. (n.d.). Multi-band superconductors
    have enhanced critical temperatures. <i>arXiv</i>. <a href="https://doi.org/10.48550/arXiv.2409.17297">https://doi.org/10.48550/arXiv.2409.17297</a>
  chicago: Henheik, Sven Joscha, Edwin Langmann, and Asbjørn Bækgaard Lauritsen. “Multi-Band
    Superconductors Have Enhanced Critical Temperatures.” <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/arXiv.2409.17297">https://doi.org/10.48550/arXiv.2409.17297</a>.
  ieee: S. J. Henheik, E. Langmann, and A. B. Lauritsen, “Multi-band superconductors
    have enhanced critical temperatures,” <i>arXiv</i>. .
  ista: Henheik SJ, Langmann E, Lauritsen AB. Multi-band superconductors have enhanced
    critical temperatures. arXiv, <a href="https://doi.org/10.48550/arXiv.2409.17297">10.48550/arXiv.2409.17297</a>.
  mla: Henheik, Sven Joscha, et al. “Multi-Band Superconductors Have Enhanced Critical
    Temperatures.” <i>ArXiv</i>, doi:<a href="https://doi.org/10.48550/arXiv.2409.17297">10.48550/arXiv.2409.17297</a>.
  short: S.J. Henheik, E. Langmann, A.B. Lauritsen, ArXiv (n.d.).
corr_author: '1'
date_created: 2025-04-11T11:43:58Z
date_published: 2024-10-21T00:00:00Z
date_updated: 2026-07-29T13:18:16Z
day: '21'
department:
- _id: LaEr
- _id: RoSe
doi: 10.48550/arXiv.2409.17297
external_id:
  arxiv:
  - '2409.17297'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2409.17297
month: '10'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: draft
related_material:
  record:
  - id: '22290'
    relation: later_version
    status: public
  - id: '19540'
    relation: dissertation_contains
    status: public
status: public
title: Multi-band superconductors have enhanced critical temperatures
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: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2024'
...