ScholarWorks@성균관대학교

초록

We demonstrate that the superconducting properties can be controlled by photo excitation in Bi2Sr2Ca2Cu3O10+delta (Bi-2223). It is realized that steady-state photo excitation converts Cu2+ ions to spinless Cu1+ ions, which lowers the superconducting transition temperature, Tc, by suppressing superfluid density. This enables the achievement of a wide range of Tc under controlled exposure of photo excitation. We observe robust Planckian dissipation in under-and optimally-doped Bi-2223 with photo excitation over a wide range of Tc achieved with photo excitation. Our investigations thus open a window for extensive study of temperature-induced changes in superconducting properties without altering the intrinsic properties of the system through chemical doping, providing a unique platform for future applications. Copyright (c) 2025 EPLA All rights, including for text and data mining, AI training, and similar technologies, are reserved.

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