scholarly journals Quasiparticle interference in iron-based superconductors

2010 ◽  
Vol 82 (22) ◽  
Author(s):  
A. Akbari ◽  
J. Knolle ◽  
I. Eremin ◽  
R. Moessner
Keyword(s):  
Iron Based Superconductors ◽  
Quasiparticle Interference ◽  
Iron Based

ChemInform Abstract: Antiferromagnetism in Iron-Based Superconductors: Selection of Magnetic Order and Quasiparticle Interference

ChemInform ◽  
2014 ◽  
Vol 45 (36) ◽  
pp. no-no
Author(s):  
Ilya Eremin ◽  
Johannes Knolle ◽  
Rafael M. Fernandes ◽  
Joerg Schmalian ◽  
Andrey V. Chubukov
Keyword(s):  
Magnetic Order ◽  
Iron Based Superconductors ◽  
Quasiparticle Interference ◽  
Iron Based ◽  
Selection Of

scholarly journals Antiferromagnetism in Iron-Based Superconductors: Selection of Magnetic Order and Quasiparticle Interference

2014 ◽  
Vol 83 (6) ◽  
pp. 061015 ◽  
Author(s):  
Ilya Eremin ◽  
Johannes Knolle ◽  
Rafael M. Fernandes ◽  
Jörg Schmalian ◽  
Andrey V. Chubukov
Keyword(s):  
Magnetic Order ◽  
Iron Based Superconductors ◽  
Quasiparticle Interference ◽  
Iron Based ◽  
Selection Of

Nematic Electronic Structure in the “Parent” State of the Iron-Based Superconductor Ca(Fe1–xCox)2As2

Science ◽  
2010 ◽  
Vol 327 (5962) ◽  
pp. 181-184 ◽  
Author(s):  
T.-M. Chuang ◽  
M. P. Allan ◽  
Jinho Lee ◽  
Yang Xie ◽  
Ni Ni ◽  
...  
Keyword(s):  
Electronic Structure ◽  
High Temperature Superconductivity ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Iron Based Superconductors ◽  
Bulk Properties ◽  
Quasiparticle Interference ◽  
Parent State ◽  
Nematic State ◽  
Iron Based

The mechanism of high-temperature superconductivity in the newly discovered iron-based superconductors is unresolved. We use spectroscopic imaging–scanning tunneling microscopy to study the electronic structure of a representative compound CaFe1.94Co0.06As2 in the “parent” state from which this superconductivity emerges. Static, unidirectional electronic nanostructures of dimension eight times the inter–iron-atom distance aFe-Fe and aligned along the crystal a axis are observed. In contrast, the delocalized electronic states detectable by quasiparticle interference imaging are dispersive along the b axis only and are consistent with a nematic α2 band with an apparent band folding having wave vector q≅±22π/8aFe-Fe along the a axis. All these effects rotate through 90 degrees at orthorhombic twin boundaries, indicating that they are bulk properties. As none of these phenomena are expected merely due to crystal symmetry, underdoped ferropnictides may exhibit a more complex electronic nematic state than originally expected.

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