# Superconducting penetration depth through a Van Hove singularity: Sr 2 RuO 4 under uniaxial stress https://mdr.nims.go.jp/datasets/57d5f29c-75c3-4946-ad69-f10bcc116f7b ## File - [2312.05130v2.pdf](https://mdr.nims.go.jp/filesets/29a227b0-d89c-49d5-9b33-24ed94a0a594/download) ([Detail](https://mdr.nims.go.jp/filesets/29a227b0-d89c-49d5-9b33-24ed94a0a594.md)) ## Id 57d5f29c-75c3-4946-ad69-f10bcc116f7b ## Local identifier ## Visibility open_to_public ## State published ## Created at 2024-09-23T22:34:14.124551Z ## Updated at 2024-09-25T07:30:32.340364Z ## Published at 2024-09-25T07:30:32.478586Z ## Doi ## First published url https://doi.org/10.1103/physrevb.110.l100502 ## Date published 2024-09-17 ## Recorded date published 2024-9 ## Resource type journal_article ## Manuscript type authors_original ## Collection ## Title - title: 'Superconducting penetration depth through a Van Hove singularity: Sr2RuO4 under uniaxial stress' title_type: original lang: en ## Description - description: In the unconventional superconductor Sr2RuO4, uniaxial stress along the [100] direction tunes the Fermi level through a Van Hove singularity (VHS) in the density of states, causing a strong enhancement of the superconducting critical temperature Tc. Here, we report measurements of the London penetration depth λ as this tuning is performed. We find that the zero-temperature superfluid density, here defined as λ(0)^(−2), increases by ∼15%, with a peak that coincides with the peak in Tc. We also find that the low temperature form of λ(T) is quadratic over the entire strain range. Using scanning tunneling microscopy, we find that the gap increases from ∆(0) ≈ 350 μeV in unstressed Sr2RuO4 to ∆(0) ≈ 600 μeV in a sample strained to near the peak in Tc. With a nodal order parameter, an increase in the superconducting gap could bring about an increase in the superfluid density through reduced sensitivity to defects and through reduced non-local effects in the Meissner screening. Our data indicate that tuning to the VHS increases the gap throughout the Brillouin zone, and that non-local effects are likely more important than reduced scattering. description_type: abstract lang: und ## Creator - name: Eli Mueller role: author orcid: https://orcid.org/0009-0002-7351-3926 - name: Yusuke Iguchi role: author - name: Fabian Jerzembeck role: author orcid: https://orcid.org/0000-0003-0003-8140 - name: Jorge O. Rodriguez role: author - name: Marisa Romanelli role: author orcid: https://orcid.org/0000-0002-1745-2332 - name: Edgar Abarca-Morales role: author - name: Anastasios Markou role: author - name: Naoki Kikugawa role: author orcid: https://orcid.org/0000-0003-3975-4478 - name: Dmitry A. Sokolov role: author - name: Gwansuk Oh role: author - name: Clifford W. Hicks role: author - name: Andrew P. Mackenzie role: author - name: Yoshiteru Maeno role: author - name: Vidya Madhavan role: author - name: Kathryn A. Moler role: author orcid: https://orcid.org/0000-0002-0233-8123 ## Contact agent ## Publisher organization: American Physical Society (APS) ## Managing organization ## Keyword - subject: Sr2RuO4, superconductivity, penetration depth, low-energy excitation schema: not_defined ## Rights - identifier: http://arxiv.org/licenses/nonexclusive-distrib/1.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo ## Journal - title: Physical Review B issn: '24699950' volume: '110' issue: '10' article_number: L100502 ## Conference ## Related item ## Funding - identifier: DE-AC02-76SF00515 funder_name: Basic Energy Sciences - identifier: DE-SC0021238 funder_name: Basic Energy Sciences - identifier: JP18K04715 funder_name: Japan Society for the Promotion of Science - identifier: JP21H01033 funder_name: Japan Society for the Promotion of Science - identifier: JP22K19093 funder_name: Japan Society for the Promotion of Science - identifier: JP15H05851 funder_name: Japan Society for the Promotion of Science - identifier: JP22H01168 funder_name: Japan Society for the Promotion of Science - identifier: JP15K21717 funder_name: Japan Society for the Promotion of Science - funder_name: Max-Planck-Gesellschaft - identifier: TRR288-422213477 funder_name: Deutsche Forschungsgemeinschaft - identifier: A10 funder_name: Deutsche Forschungsgemeinschaft - identifier: EXC 2147 funder_name: Deutsche Forschungsgemeinschaft - identifier: '390858490' funder_name: Deutsche Forschungsgemeinschaft - identifier: EP/X012158/1 funder_name: Engineering and Physical Sciences Research Council ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: 29a227b0-d89c-49d5-9b33-24ed94a0a594 filename: 2312.05130v2.pdf content_type: application/pdf size: 3157474 md5: 7b7b8f76129936eb2c67455750846015 ## Thumbnail fileset_id: 29a227b0-d89c-49d5-9b33-24ed94a0a594 filename: 2312.05130v2.pdf