التفاصيل البيبلوغرافية
| العنوان: |
Quantum Bipolaron Superconductivity from Quadratic Electron-Phonon Coupling. |
| المؤلفون: |
Han Z; Department of Physics, Stanford University, Stanford, California 94305, USA., Kivelson SA; Department of Physics, Stanford University, Stanford, California 94305, USA., Volkov PA; Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA.; Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA. |
| المصدر: |
Physical review letters [Phys Rev Lett] 2024 May 31; Vol. 132 (22), pp. 226001. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: American Physical Society Country of Publication: United States NLM ID: 0401141 Publication Model: Print Cited Medium: Internet ISSN: 1079-7114 (Electronic) Linking ISSN: 00319007 NLM ISO Abbreviation: Phys Rev Lett Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: |
Original Publication: New York : American Physical Society |
| مستخلص: |
When the electron-phonon coupling is quadratic in the phonon coordinates, electrons can pair to form bipolarons due to phonon zero-point fluctuations, a purely quantum effect. We study superconductivity originating from this pairing mechanism in a minimal model and reveal that, in the strong coupling regime, the critical temperature (T_{c}) is only mildly suppressed by the coupling strength, in stark contrast to the exponential suppression in linearly coupled systems, thus implying higher optimal T_{c} values. We demonstrate that large coupling constants of this flavor are achieved in known materials such as perovskites, and discuss strategies to realize such superconductivity using superlattices. |
| تواريخ الأحداث: |
Date Created: 20240615 Latest Revision: 20240615 |
| رمز التحديث: |
20240616 |
| DOI: |
10.1103/PhysRevLett.132.226001 |
| PMID: |
38877937 |
| قاعدة البيانات: |
MEDLINE |
