DOAJ Open Access 2022

Theory of superconductivity in doped quantum paraelectrics

Yue Yu Harold Y. Hwang S. Raghu Suk Bum Chung

Abstrak

Abstract Recent experiments on Nb-doped SrTiO3 have shown that the superconducting energy gap to the transition temperature ratio maintains the Bardeen–Cooper–Schrieffer (BCS) value throughout its superconducting dome. Motivated by these and related studies, we show that the Cooper pairing mediated by a single soft transverse-optical phonon is the most natural mechanism for such a superconducting dome given experimental constraints, and present the microscopic theory for this pairing mechanism. Furthermore, we show that this mechanism is consistent with the T 2 resistivity in the normal state. Lastly, we discuss what physical insights SrTiO3 provides for superconductivity in other quantum paraelectrics such as KTaO3.

Topik & Kata Kunci

Materials of engineering and construction. Mechanics of materials Atomic physics. Constitution and properties of matter

Penulis (4)

Yue Yu

Harold Y. Hwang

S. Raghu

Suk Bum Chung

Format Sitasi

APA MLA BibTeX

Yu, Y., Hwang, H.Y., Raghu, S., Chung, S.B. (2022). Theory of superconductivity in doped quantum paraelectrics. https://doi.org/10.1038/s41535-022-00466-2

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Informasi Jurnal

Tahun Terbit: 2022
Sumber Database: DOAJ
DOI: 10.1038/s41535-022-00466-2
Akses: Open Access ✓