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Picometer registration of zinc impurity states in Bi2Sr2CaCu2O8+delta for phase determination in intra-unit-cell Fourier transform STM

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Date
16/05/2012
Author
Hamidian, M. H.
Firmo, I. A.
Fujita, K.
Mukhopadhyay, S.
Orenstein, J. W.
Eisaki, H.
Uchida, S.
Lawler, M. J.
Kim, E-A
Davis, J. C.
Funder
EPSRC
Grant ID
EP/I031014/1
Keywords
Temperature superconductor
Transition
Nematicity
Pseudogap
QC Physics
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Abstract
Direct visualization of electronic-structure symmetry within each crystalline unit cell is a new technique for complex electronic matter research (Lawler et al 2010 Nature 466 347-51, Schmidt et al 2011 New J. Phys. 13 065014, Fujita K et al 2012 J. Phys. Soc. Japan 81 011005). By studying the Bragg peaks in Fourier transforms of electronic structure images and particularly by resolving both the real and imaginary components of the Bragg amplitudes, distinct types of intra-unit-cell symmetry breaking can be studied. However, establishing the precise symmetry point of each unit cell in real space is crucial in defining the phase for such a Bragg-peak Fourier analysis. Exemplary of this challenge is the high-temperature superconductor Bi2Sr2CaCu2O8+delta for which the surface Bi atom locations are observable, while it is the invisible Cu atoms that define the relevant CuO2 unit-cell symmetry point. Here we demonstrate, by imaging with picometer precision the electronic impurity states at individual Zn atoms substituted at Cu sites, that the phase established using the Bi lattice produces a similar to 2%(2 pi) error relative to the actual Cu lattice. Such a phase assignment error would not diminish reliability in the determination of intra-unit-cell rotational symmetry breaking at the CuO2 plane (Lawler et al 2010 Nature 466 347-51, Schmidt et al 2011 New J. Phys. 13 065014, Fujita K et al 2012 J. Phys. Soc. Japan 81 011005). Moreover, this type of impurity atom substitution at the relevant symmetry site can be of general utility in phase determination for the Bragg-peak Fourier analysis of intra-unit-cell symmetry.
Citation
Hamidian , M H , Firmo , I A , Fujita , K , Mukhopadhyay , S , Orenstein , J W , Eisaki , H , Uchida , S , Lawler , M J , Kim , E-A & Davis , J C 2012 , ' Picometer registration of zinc impurity states in Bi2Sr2CaCu2O8+delta for phase determination in intra-unit-cell Fourier transform STM ' , New Journal of Physics , vol. 14 , 053017 . https://doi.org/10.1088/1367-2630/14/5/053017
Publication
New Journal of Physics
Status
Peer reviewed
DOI
https://doi.org/10.1088/1367-2630/14/5/053017
ISSN
1367-2630
Type
Journal article
Rights
© 2012 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 3.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is properly cited
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/4831

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