Abstract:
:A collective order of spin and charge degrees of freedom into stripes has been predicted to be a possible ground state of hole-doped CuO(2) planes, which are the building blocks of high-temperature superconductors. In fact, stripe-like spin and charge order has been observed in various layered cuprate systems. For the prototypical high-temperature superconductor La(2-x)Sr(x)CuO(4), no charge-stripe signal has been found so far, but several indications for a proximity to their formation. Here we report the observation of a pronounced charge-stripe signal in the near surface region of 12-percent doped La(2-x)Sr(x)CuO(4). We conclude that this compound is sufficiently close to charge stripe formation that small perturbations or reduced dimensionality near the surface can stabilize this order. Our finding of different phases in the bulk and near the surface of La(2-x)Sr(x)CuO(4) should be relevant for the interpretation of data from surface-sensitive probes, which are widely used for La(2-x)Sr(x)CuO(4) and similar systems.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Wu HH,Buchholz M,Trabant C,Chang CF,Komarek AC,Heigl F,Zimmermann MV,Cwik M,Nakamura F,Braden M,Schüßler-Langeheine Cdoi
10.1038/ncomms2019subject
Has Abstractpub_date
2012-01-01 00:00:00pages
1023issn
2041-1723pii
ncomms2019journal_volume
3pub_type
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