期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.057402
关键词
-
资金
- Department of Energy, Office of Basic Energy Sciences, Division of Material Sciences
- National Nuclear Security administration of the U.S. Department of Energy [DE-AC52-06NA25396]
Ultrafast optical spectroscopy is used to study the antiferromagnetic f-electron system USb2. We observe the opening of two charge gaps at low temperatures (less than or similar to 45 K), arising from renormalization of the electronic structure. Analysis of our data indicates that one gap is due to hybridization between localized f-electron and conduction electron bands, while band renormalization involving magnons leads to the emergence of the second gap. These experiments thus enable us to shed light on the complex electronic structure emerging at the Fermi surface in f-electron systems.
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