Higher superconducting transition temperature by breaking the universal pressure relation
Abstract
Achieving higher transition temperature (T c ) is a primary goal in superconductivity research. T c and doping have been found to have a dome-like universal relation where the peak position is the maximum T c-max , which is consistent with previous experimental results in the lower pressure range. By using the ultrasensitive magnetization measurement technique under high pressure that we developed, we discovered a universal resurgence of T c passing the peak predicted by the general T c - p (doping) or -P (pressure) relation for cuprate high-temperature superconductor and attribute the resurgence to a pressure-induced electronic transition, which is supported qualitatively by our density functional theory calculations. This offers a paradigm to raise the T c of the layered cuprate high-temperature superconductors to a new height.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 24, 2019
- Source ID
- 10.1073/pnas.1819512116
Entities
People
- Ching-Wu Chu
- Hung-cheng Wu
- Kyeongjae Cho
- Liangzi Deng
- Shuyuan Huyan
- Yifan Nie
- Yongping Zheng
- Zheng Wu
Organizations
- Air Force Office of Scientific Research
- Korea Institute of Energy Technology Evaluation and Planning
- Lawrence Berkeley National Laboratory
- University of Houston
- University of Texas at Dallas