Iron-Based Superconductors as Odd-Parity Superconductors
Parity is a fundamental quantum number used to classify a state of matter. Materials rarely possess ground states with odd parity. We show that the superconducting state in iron-based superconductors is classified as an odd-parity s-wave spin-singlet pairing state in a single trilayer FeAs/Se, the b...
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| Format: | Article |
| Language: | English |
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American Physical Society
2013-07-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.3.031004 |
| _version_ | 1818401216961445888 |
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| author | Jiangping Hu |
| author_facet | Jiangping Hu |
| author_sort | Jiangping Hu |
| collection | DOAJ |
| description | Parity is a fundamental quantum number used to classify a state of matter. Materials rarely possess ground states with odd parity. We show that the superconducting state in iron-based superconductors is classified as an odd-parity s-wave spin-singlet pairing state in a single trilayer FeAs/Se, the building block of the materials. In a low-energy effective model constructed on the Fe square bipartite lattice, the superconducting order parameter in this state is a combination of an s-wave normal pairing between two sublattices and an s-wave η pairing within the sublattices. The state has a fingerprint with a real-space sign inversion between the top and bottom As/Se layers. The results suggest that iron-based superconductors are a new quantum state of matter, and the measurement of the odd parity can help to establish high-temperature superconducting mechanisms. |
| first_indexed | 2024-12-14T07:48:57Z |
| format | Article |
| id | doaj.art-15dde2a7615447ab897ac52bfd434363 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-12-14T07:48:57Z |
| publishDate | 2013-07-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-15dde2a7615447ab897ac52bfd4343632022-12-21T23:10:46ZengAmerican Physical SocietyPhysical Review X2160-33082013-07-013303100410.1103/PhysRevX.3.031004Iron-Based Superconductors as Odd-Parity SuperconductorsJiangping HuParity is a fundamental quantum number used to classify a state of matter. Materials rarely possess ground states with odd parity. We show that the superconducting state in iron-based superconductors is classified as an odd-parity s-wave spin-singlet pairing state in a single trilayer FeAs/Se, the building block of the materials. In a low-energy effective model constructed on the Fe square bipartite lattice, the superconducting order parameter in this state is a combination of an s-wave normal pairing between two sublattices and an s-wave η pairing within the sublattices. The state has a fingerprint with a real-space sign inversion between the top and bottom As/Se layers. The results suggest that iron-based superconductors are a new quantum state of matter, and the measurement of the odd parity can help to establish high-temperature superconducting mechanisms.http://doi.org/10.1103/PhysRevX.3.031004 |
| spellingShingle | Jiangping Hu Iron-Based Superconductors as Odd-Parity Superconductors Physical Review X |
| title | Iron-Based Superconductors as Odd-Parity Superconductors |
| title_full | Iron-Based Superconductors as Odd-Parity Superconductors |
| title_fullStr | Iron-Based Superconductors as Odd-Parity Superconductors |
| title_full_unstemmed | Iron-Based Superconductors as Odd-Parity Superconductors |
| title_short | Iron-Based Superconductors as Odd-Parity Superconductors |
| title_sort | iron based superconductors as odd parity superconductors |
| url | http://doi.org/10.1103/PhysRevX.3.031004 |
| work_keys_str_mv | AT jiangpinghu ironbasedsuperconductorsasoddparitysuperconductors |