Journal
PHYSICAL REVIEW B
Volume 86, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.86.064505
Keywords
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Funding
- Chinese Academy of Sciences [2010Y1JB6]
- Chinese Ministry of Science and Technology [2010CB923000, 2011CBA001000]
- National Natural Science Foundation of China [11004232, 11050110422]
- University of Wisconsin Madison
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We report a systematic angle-resolved photoemission spectroscopy study on Ba(Fe1-xRux)(2)As-2 for a wide range of Ru concentrations (0.15 <= x <= 0.74). We observed a crossover from two dimensions to three dimensions for some of the holelike Fermi surfaces with Ru substitution and a large reduction in the mass renormalization close to optimal doping. These results suggest that isovalent Ru substitution has remarkable effects on the low-energy electron excitations, which are important for the evolution of superconductivity and antiferromagnetism in this system.
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