Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study
We report measurements of the in-plane London penetration depth λ in single crystals of the α−PdBi2 superconductor—the α-phase counterpart of the putative topological superconductor β−PdBi2, down to 0.35 K using a high-resolution tunnel-diode-based technique. Both λ and superfluid density ρs exhibit...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/83574 http://hdl.handle.net/10220/43553 |
| _version_ | 1824454436968202240 |
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| author | Mitra, Sreemanta Okawa, K. Kunniniyil Sudheesh, S. Sasagawa, T. Zhu, Jian-Xin Chia, Elbert Ee Min |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Mitra, Sreemanta Okawa, K. Kunniniyil Sudheesh, S. Sasagawa, T. Zhu, Jian-Xin Chia, Elbert Ee Min |
| author_sort | Mitra, Sreemanta |
| collection | NTU |
| description | We report measurements of the in-plane London penetration depth λ in single crystals of the α−PdBi2 superconductor—the α-phase counterpart of the putative topological superconductor β−PdBi2, down to 0.35 K using a high-resolution tunnel-diode-based technique. Both λ and superfluid density ρs exhibit an exponential behavior for T≤ 0.35Tc, with Δ(0)/kBTc ∼ 2.0, ΔC/γTc ∼ 2.0, and λ(0) ∼ 140 nm, showing that α−PdBi2 is a moderately coupling, fully gapped superconductor. The values of Δ(0) and ΔC/γTc are consistent with each other via strong-coupling corrections. |
| first_indexed | 2025-02-19T03:22:17Z |
| format | Journal Article |
| id | ntu-10356/83574 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:22:17Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/835742023-02-28T19:31:40Z Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study Mitra, Sreemanta Okawa, K. Kunniniyil Sudheesh, S. Sasagawa, T. Zhu, Jian-Xin Chia, Elbert Ee Min School of Physical and Mathematical Sciences Strong-coupling corrections Superconductor We report measurements of the in-plane London penetration depth λ in single crystals of the α−PdBi2 superconductor—the α-phase counterpart of the putative topological superconductor β−PdBi2, down to 0.35 K using a high-resolution tunnel-diode-based technique. Both λ and superfluid density ρs exhibit an exponential behavior for T≤ 0.35Tc, with Δ(0)/kBTc ∼ 2.0, ΔC/γTc ∼ 2.0, and λ(0) ∼ 140 nm, showing that α−PdBi2 is a moderately coupling, fully gapped superconductor. The values of Δ(0) and ΔC/γTc are consistent with each other via strong-coupling corrections. MOE (Min. of Education, S’pore) Published version 2017-08-04T06:27:34Z 2019-12-06T15:25:56Z 2017-08-04T06:27:34Z 2019-12-06T15:25:56Z 2017 Journal Article Mitra, S., Okawa, K., Kunniniyil Sudheesh, S., Sasagawa, T., Zhu, J.-X., & Chia, E. E. M. (2017). Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study. Physical Review B, 95(13),134519-. 2469-9950 https://hdl.handle.net/10356/83574 http://hdl.handle.net/10220/43553 10.1103/PhysRevB.95.134519 en Physical Review B © 2017 American Physical Society (APS). This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society (APS). The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.95.134519]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 5 p. application/pdf |
| spellingShingle | Strong-coupling corrections Superconductor Mitra, Sreemanta Okawa, K. Kunniniyil Sudheesh, S. Sasagawa, T. Zhu, Jian-Xin Chia, Elbert Ee Min Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study |
| title | Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study |
| title_full | Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study |
| title_fullStr | Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study |
| title_full_unstemmed | Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study |
| title_short | Probing the superconducting gap symmetry of α − PdBi 2 : A penetration depth study |
| title_sort | probing the superconducting gap symmetry of α pdbi 2 a penetration depth study |
| topic | Strong-coupling corrections Superconductor |
| url | https://hdl.handle.net/10356/83574 http://hdl.handle.net/10220/43553 |
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