Ambient-pressure 151-K superconductivity in HgBa2Ca2Cu3O8+δ via pressure quench

• 成果类型: Article
• 署名作者: Deng, Liangzi; Habamahoro, Thacien; Safezoddeh, Artin; Karki, Bishnu; Kazibwe, Sudaice; Schulze, Daniel J.; Wu, Zheng; Julian, Matthew; Prasankumar, Rohit P.; Zhou, Hua; Smith, Jesse S.; Hosur, Pavan R.; Chu, Ching-Wu
• 署名单位: University of Houston System; University of Houston; University of Houston System; University of Houston; Intellectual Ventures; United States Department of Energy (DOE); Argonne National Laboratory
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-8424; 1091-6490
• DOI: 10.1073/pnas.2536178123
• 发表日期: 2026-03-17
• 页码: e2536178123
• 关键词: high-temperature superconductivity; cuprates; pressure quench; metastability; microstructure; total-energy calculations; temperature; 150-K

摘要

Superconductivity has been a vigorously researched topic since its discovery in 1911. Raising the superconducting transition temperature (Tc) has been the main driving force behind such long-sustained efforts due to its potential for impacting humanity and the fundamental knowledge gained from understanding this macroscopic coherent quantum state at high temperatures. The successful development of high-Tc superconductivity will make possible extraordinarily efficient generation, delivery, and utilization of energy and could also enable the development of controlled fusion while impacting other burgeoning fields like quantum computation and quantum electronics. However, progress has been hindered by a longstanding plateau in the record ambient-pressure Tc, unchanged since 1993. Subsequent significant advancements in Tc have been achieved only under high pressures, preventing the realization of superconductivity's full potential. To directly address this challenge, we developed a pressure-quench protocol (PQP) to stabilize pressure-induced/- enhanced superconducting states at ambient pressure. Here, we achieve a record ambient-pressure Tcof 151 K in the cuprate HgBa2Ca2Cu3O8+delta via PQP. The experimental results are further supported by synchrotron X-ray diffraction measurements and phonon and electronic structure calculations. This breakthrough opens avenues for stabilizing and exploring ambient-pressure high-Tc superconducting states and other quantum states that have been previously only accessible under pressure, paving the way for deeper understanding and practical applications of high-Tc superconductivity and beyond.