Designing phase sensitive probes of monopole superconducting order
Distinct from familiar s-, p-, or d-wave pairings, the monopole superconducting order represents a novel class of pairing order arising from nontrivial monopole charge of the Cooper pair. In the weak-coupling regime, this order can emerge when pairing occurs between Fermi surfaces with different Che...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2024-11-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.6.043189 |
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| _version_ | 1846160025178865664 |
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| author | Grayson R. Frazier Junjia Zhang Junyi Zhang Xinyu Sun Yi Li |
| author_facet | Grayson R. Frazier Junjia Zhang Junyi Zhang Xinyu Sun Yi Li |
| author_sort | Grayson R. Frazier |
| collection | DOAJ |
| description | Distinct from familiar s-, p-, or d-wave pairings, the monopole superconducting order represents a novel class of pairing order arising from nontrivial monopole charge of the Cooper pair. In the weak-coupling regime, this order can emerge when pairing occurs between Fermi surfaces with different Chern numbers in, for example, doped Weyl semimetal systems. However, the phase of monopole pairing order is not well-defined over an entire Fermi surface, making it challenging to design experiments sensitive to both its symmetry and topology. To address this, we propose a scheme based on symmetry and topological principles to identify this elusive pairing order through a set of phase-sensitive Josephson experiments. By examining the discrepancy between global and local angular momentum of the pairing order, we can unveil the monopole charge of the pairing order, including for models with higher pair monopole charge |q_{p}|=1,2, and 3. We demonstrate the proposed probe of monopole pairing order through analytic and numerical studies of Josephson coupling in models of monopole superconductor junctions. This work opens a promising avenue to uncover the unique topological properties of monopole pairing orders and to distinguish them from known pairing orders based on spherical harmonic symmetry. |
| format | Article |
| id | doaj-art-e41b9e85853847dcb228d9b68e71c4a7 |
| institution | Kabale University |
| issn | 2643-1564 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-e41b9e85853847dcb228d9b68e71c4a72024-11-22T15:07:32ZengAmerican Physical SocietyPhysical Review Research2643-15642024-11-016404318910.1103/PhysRevResearch.6.043189Designing phase sensitive probes of monopole superconducting orderGrayson R. FrazierJunjia ZhangJunyi ZhangXinyu SunYi LiDistinct from familiar s-, p-, or d-wave pairings, the monopole superconducting order represents a novel class of pairing order arising from nontrivial monopole charge of the Cooper pair. In the weak-coupling regime, this order can emerge when pairing occurs between Fermi surfaces with different Chern numbers in, for example, doped Weyl semimetal systems. However, the phase of monopole pairing order is not well-defined over an entire Fermi surface, making it challenging to design experiments sensitive to both its symmetry and topology. To address this, we propose a scheme based on symmetry and topological principles to identify this elusive pairing order through a set of phase-sensitive Josephson experiments. By examining the discrepancy between global and local angular momentum of the pairing order, we can unveil the monopole charge of the pairing order, including for models with higher pair monopole charge |q_{p}|=1,2, and 3. We demonstrate the proposed probe of monopole pairing order through analytic and numerical studies of Josephson coupling in models of monopole superconductor junctions. This work opens a promising avenue to uncover the unique topological properties of monopole pairing orders and to distinguish them from known pairing orders based on spherical harmonic symmetry.http://doi.org/10.1103/PhysRevResearch.6.043189 |
| spellingShingle | Grayson R. Frazier Junjia Zhang Junyi Zhang Xinyu Sun Yi Li Designing phase sensitive probes of monopole superconducting order Physical Review Research |
| title | Designing phase sensitive probes of monopole superconducting order |
| title_full | Designing phase sensitive probes of monopole superconducting order |
| title_fullStr | Designing phase sensitive probes of monopole superconducting order |
| title_full_unstemmed | Designing phase sensitive probes of monopole superconducting order |
| title_short | Designing phase sensitive probes of monopole superconducting order |
| title_sort | designing phase sensitive probes of monopole superconducting order |
| url | http://doi.org/10.1103/PhysRevResearch.6.043189 |
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