تقرير
Tuning the parity of superconductivity in CeRh2As2 via pressure
العنوان: | Tuning the parity of superconductivity in CeRh2As2 via pressure |
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المؤلفون: | Siddiquee, Hasan, Rehfuss, Zackary, Broyles, Christopher, Ran, Sheng |
سنة النشر: | 2022 |
المجموعة: | Condensed Matter |
مصطلحات موضوعية: | Condensed Matter - Superconductivity |
الوصف: | In the recently discovered heavy fermion superconductor CeRh2As2, a magnetic field induced phase transition has been observed inside the superconducting state, which is proposed to be a transition from an even to an odd-parity superconducting state. The odd-parity superconducting state and its large upper critical field has been explained by local inversion symmetry breaking and consequent Rashba spin-orbit coupling. Here we report the experimental tuning of the parity of superconductivity in CeRh2As2 via applied pressure. Superconductivity is enhanced by pressure after its initial suppression, forming a second dome. However, the odd-parity state only exists in the first dome and the second dome is dominated by the even-parity state. This parity switch of superconductivity under pressure is consistent with the competition between Rashba spin-orbit coupling and interlayer hopping in determining the parity of superconductivity in systems with local inversion symmetry breaking. Our results provide insightful guidance on how to look for new odd-parity superconductors. |
نوع الوثيقة: | Working Paper |
DOI: | 10.1103/PhysRevB.108.L020504 |
URL الوصول: | http://arxiv.org/abs/2212.06930 |
رقم الأكسشن: | edsarx.2212.06930 |
قاعدة البيانات: | arXiv |
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