Work

Superconductivity in Tin Telluride Films Grown by Molecular Beam Epitaxy

Year: 2025

Type: article

Abstract: The intersection of superconductivity and ferroelectricity hosts a wide range of exotic quantum phenomena. Here, we report on the observation of superconductivity in high-quality tin telluride films grown by molecular beam epitaxy. Unintentionally doped tin telluride undergoes a ferroelectric transition at ~100 K. The critical temperature of superconductivity increases monotonically with indium concentration. The critical field of superconductivity, however, does not follow the same behavior as critical temperature with indium concentration and exhibits a carrier-density-dependent violation of the Pauli limit. The electron–phonon coupling, according to the McMillan formula, exhibits a systematic enhancement with indium concentration, suggesting a potential violation of Bardeen–Cooper–Schrieffer (BCS) weak coupling at high indium concentrations.

Source: Journal of Electronic Materials

DOI: 10.1007/s11664-025-11908-5

Authors: Antonio Gonzalez, Samuel J. Poage, Bernardo Langa, Deepak Sapkota, Salva Salmani-Rezaie, Shalinee Chikara, Michael D. Williams, David A. Muller, Kasra Sardashti, Kaveh Ahadi

Institutions: North Carolina State University, Clemson University, Cornell University, National High Magnetic Field Laboratory, Clark Atlanta University, The Ohio State University

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,390

Funders: National Science Foundation, National High Magnetic Field Laboratory, Cornell Center for Materials Research, Materials Research Science and Engineering Center, Harvard University, Division of Materials Research, High Magnetic Field Laboratory, Chinese Academy of Sciences, State of Florida

Awards: G1019936685, QuIC-TAQS: Voltage-Tunable Hybrid Microwave-Acoustic Interconnects for Multi-modal Quantum Memories, G1205195086, G1321126357, G1734011414, G2138945613, G2415270547, Cornell Center for Materials Research - MRSEC, MIP: Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), G5917061246, G6351810044, PREM- Emergent Interface Materials, National High Magnetic Field Laboratory Renewal 2023-2027, G742574937, G7767248047, G8152425740, Collaborative Research: Optimizing KTaO3 Superconductivity for Quantum Applications

OpenAlex ID: W4409922124

FWCI: 0.934

Cites: 49

Cited by: 3

Related to: 10