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Unconventional charge order in a co-doped high-Tc superconductor (CROSBI ID 230955)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Pelc, Damjan ; Vučković, Marija ; Grafe, Hans-Joachim ; Baek, Seung-Ho ; Požek, Miroslav Unconventional charge order in a co-doped high-Tc superconductor // Nature communications, 7 (2016), 12775, 7. doi: 10.1038/ncomms12775

Podaci o odgovornosti

Pelc, Damjan ; Vučković, Marija ; Grafe, Hans-Joachim ; Baek, Seung-Ho ; Požek, Miroslav

engleski

Unconventional charge order in a co-doped high-Tc superconductor

Charge-stripe order has recently been established as an important aspect of cuprate high-Tc superconductors. However, owing to the complex interplay between competing phases and the influence of disorder, it is unclear how it emerges from the parent high-temperature state. Here we report on the discovery of an unconventional ordered phase between charge-stripe order and (pseudogapped) metal in the cuprate La1.8-xEu0.2SrxCuO4. We use three complementary experiments—nuclear quadrupole resonance, nonlinear conductivity and specific heat— to demonstrate that the order appears through a sharp phase transition and exists in a dome-shaped region of the phase diagram. Our results imply that the new phase is a state, which preserves translational symmetry: a charge nematic. We thus resolve the process of charge-stripe development in cuprates, show that this nematic phase is distinct from high- temperature pseudogap and establish a link with other strongly correlated electronic materials with prominent nematic order.

high temperature superconductivity ; charge order ; stripes ; nematic phase

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Podaci o izdanju

7

2016.

12775

7

objavljeno

2041-1723

10.1038/ncomms12775

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Fizika

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