Work

High-performance amorphous superconducting rhenium films by e-beam evaporation

Year: 2025

Type: article

Abstract: We present electron beam evaporation of rhenium films on room-temperature substrates. The films are shown to be amorphous and achieve a record-high critical temperature for rhenium—exceeding 7 K at the midpoint of the transition—alongside a high critical current density of 5000 A/mm2 and critical fields above 10 T. Terahertz spectroscopy reveals a Bardeen–Cooper–Schrieffer-like character of superconductivity with a zero-temperature energy gap of approximately 2 meV and subgap optical conductivity. Despite being friable, the films are stable and compatible with lift-off processes that opens the capabilities for superconducting device applications.

Source: Journal of Applied Physics

DOI: 10.1063/5.0292196

Authors: E. V. Tarkaeva, V. A. Ievleva, A. R. Prishchepa, E. S. Zhukova, A. Terentiev, A. Yu. Kuntsevich

Institutions: P.N. Lebedev Physical Institute of the Russian Academy of Sciences, National Research University Higher School of Economics, Moscow Institute of Physics and Technology

Language: English

Topic: Superconducting and THz Device Technology

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funders: Russian Science Foundation, Ministry of Science and Higher Education of the Russian Federation