期刊
NATURE
卷 601, 期 7891, 页码 35-44出版社
NATURE PORTFOLIO
DOI: 10.1038/s41586-021-04073-2
关键词
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资金
- US Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division [DE-SC0020045]
- EPSRC Career Acceleration Fellowship [EP/I004475/1]
- Oxford Centre for Applied Superconductivity (CFAS)
- National Science Foundation [NSF PHY-1748958]
- National Natural Science Foundation of China [11888101, 11674371]
- Strategic Priority Research Program of the Chinese Academy of Sciences, China [XDB28000000, XDB07000000]
- Beijing Municipal Science and Technology Commission, China [Z191100007219012]
- US Department of Energy, Office of Basic Energy Sciences [DE-AC02-76SF00515]
- US Department of Energy, Office of Basic Sciences [DE-FG02-05ER46236]
- NSF [DMR-1733071]
Superconductivity is a widespread phenomenon observed in most metals at very low temperatures. While conventional superconductors can be explained by the Bardeen-Cooper-Schrieffer theory, unconventional superconductors like iron-based materials challenge our understanding. The study of iron-based superconductors has served as a testing ground for novel experimental tools and theoretical approaches, greatly influencing the field of quantum materials.
Superconductivity is a remarkably widespread phenomenon that is observed in most metals cooled to very low temperatures. The ubiquity of such conventional superconductors, and the wide range of associated critical temperatures, is readily understood in terms of the well-known Bardeen-Cooper-Schrieffer theory. Occasionally, however, unconventional superconductors are found, such as the iron-based materials, which extend and defy this understanding in unexpected ways. In the case of the iron-based superconductors, this includes the different ways in which the presence of multiple atomic orbitals can manifest in unconventional superconductivity, giving rise to a rich landscape of gap structures that share the same dominant pairing mechanism. In addition, these materials have also led to insights into the unusual metallic state governed by the Hund's interaction, the control and mechanisms of electronic nematicity, the impact of magnetic fluctuations and quantum criticality, and the importance of topology in correlated states. Over the fourteen years since their discovery, iron-based superconductors have proven to be a testing ground for the development of novel experimental tools and theoretical approaches, both of which have extensively influenced the wider field of quantum materials.
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