Abstract
We report first-principles computations of the angle-resolved photoemission response with circularly polarized light in Bi₂Sr₂CaCu₂O₈₊δ for the purpose of delineating contributions to the circular dichroism resulting from distortions and modulations of the crystal lattice. Comparison with available experimental results shows that the measured circular dichroism from antinodal mirror planes is reproduced in quantitative detail in calculations employing the average orthorhombic crystal structure. We thus conclude that the existing angle-resolved photoemission measurements can be understood essentially within the framework of the conventional picture, without the need to invoke unconventional mechanisms.
Keywords
angle-resolved photoemission, Bi₂Sr₂CaCu₂O₈+δ, time-reversal symmetry breaking
Subject Categories
Photoemission, Superconductors, Broken symmetry (Physics), Circular dichroism
Disciplines
Physics
Publisher
American Physical Society
Publication Date
8-5-2009
Rights Information
Copyright 2009 American Physical Society.
Rights Holder
American Physical Society
Recommended Citation
Arpiainen, V.; Bansil, A.; and Lindroos, M., "Circular dichroism in the angle-resolved photoemission spectrum of the high-temperature Bi₂Sr₂CaCu₂O₈+δ superconductor: Can these measurements be interpreted as evidence for time-reversal symmetry breaking?" (2009). Physics Faculty Publications. Paper 359.
Click button above to open, or right-click to save.
Notes
Originally published in Physical Review Letters v.103 (2009): 067005. DOI: 10.1103/PhysRevLett.103.067005