Anisotropic Energy Gaps of Iron-Based Superconductivity from Intraband 
Quasiparticle Interference in LiFeAs

Allan, M. P.; Rost, A. W.; Mackenzie, A. P.; Xie, Yang; Davis, J. C.; Kihou, K.; Lee, C. H.; Iyo, A.; Eisaki, H.; Chuang, T. -M.

doi:10.1126/science.1218726

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Anisotropic Energy Gaps of Iron-Based Superconductivity from Intraband Quasiparticle Interference in LiFeAs

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Allan, M. P., Rost, A. W., Mackenzie, A. P., Xie, Y., Davis, J. C., Kihou, K., et al. (2012). Anisotropic Energy Gaps of Iron-Based Superconductivity from Intraband Quasiparticle Interference in LiFeAs. Science, 336(6081), 563-567. doi:10.1126/science.1218726.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-F2BA-4

Abstract

If strong electron-electron interactions between neighboring Fe atoms mediate the Cooper pairing in iron-pnictide superconductors, then specific and distinct anisotropic superconducting energy gaps Delta(i)((k) over right arrow) should appear on the different electronic bands i. Here, we introduce intraband Bogoliubov quasiparticle scattering interference (QPI) techniques for determination of Delta(i)((k) over right arrow) in such materials, focusing on lithium iron arsenide (LiFeAs). We identify the three hole-like bands assigned previously as gamma, alpha(2), and alpha(1), and we determine the anisotropy, magnitude, and relative orientations of their Delta(i)((k) over right arrow): These measurements will advance quantitative theoretical analysis of the mechanism of Cooper pairing in iron-based superconductivity.