Physics – Condensed Matter – Superconductivity
Scientific paper
2010-09-07
PRL 107, 127002 (2011)
Physics
Condensed Matter
Superconductivity
Abstract and discussion revised; to appear in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.107.127002
We demonstrated experimentally a direct way to probe a hidden propensity to the formation of spin density wave (SDW) in a non-magnetic metal with strong Fermi surface nesting. Substituting Fe for a tiny amount of Cu (1%) induced an incommensurate magnetic order below 20 K in heavily-overdoped La2-xSrxCuO4 (LSCO). Elastic neutron scattering suggested that this order cannot be ascribed to the localized spins on Cu or doped Fe. Angle-resolved photoemission spectroscopy (ARPES), combined with numerical calculations, revealed a strong Fermi surface nesting inherent in the pristine LSCO that likely drives this order. The heavily-overdoped Fe-doped LSCO thus represents the first plausible example of the long-sought "itinerant-spin extreme" of cuprates, where the spins of itinerant doped holes define the magnetic ordering ground state. This finding complements the current picture of cuprate spin physics that highlights the predominant role of localized spins at lower dopings. The demonstrated set of methods could potentially apply to studying hidden density-wave instabilities of other "nested" materials on the verge of density wave ordering.
Adachi Tadashi
Enoki Motohiro
Fujita Masaki
Hashimoto Makoto
He Rui-Hua
No associations
LandOfFree
Hidden itinerant-spin phase in heavily-overdoped La2-xSrxCuO4 revealed by dilute Fe doping: A combined neutron scattering and angle-resolved photoemission study does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hidden itinerant-spin phase in heavily-overdoped La2-xSrxCuO4 revealed by dilute Fe doping: A combined neutron scattering and angle-resolved photoemission study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hidden itinerant-spin phase in heavily-overdoped La2-xSrxCuO4 revealed by dilute Fe doping: A combined neutron scattering and angle-resolved photoemission study will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-31448