Shen, Y;
Fabbris, G;
Miao, H;
Cao, Y;
Meyers, D;
Mazzone, DG;
Assefa, T;
... Dean, MPM; + view all
(2021)
Charge Condensation and Lattice Coupling Drives Stripe Formation in Nickelates.
Physical Review Letters
, 126
(17)
, Article 177601. 10.1103/PhysRevLett.126.177601.
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Abstract
Revealing the predominant driving force behind symmetry breaking in correlated materials is sometimes a formidable task due to the intertwined nature of different degrees of freedom. This is the case for La_{2-x}Sr_{x}NiO_{4+δ}, in which coupled incommensurate charge and spin stripes form at low temperatures. Here, we use resonant x-ray photon correlation spectroscopy to study the temporal stability and domain memory of the charge and spin stripes in La_{2-x}Sr_{x}NiO_{4+δ}. Although spin stripes are more spatially correlated, charge stripes maintain a better temporal stability against temperature change. More intriguingly, charge order shows robust domain memory with thermal cycling up to 250 K, far above the ordering temperature. These results demonstrate the pinning of charge stripes to the lattice and that charge condensation is the predominant factor in the formation of stripe orders in nickelates.
Type: | Article |
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Title: | Charge Condensation and Lattice Coupling Drives Stripe Formation in Nickelates |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevLett.126.177601 |
Publisher version: | https://doi.org/10.1103/PhysRevLett.126.177601 |
Language: | English |
Additional information: | This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions. |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
URI: | https://discovery.ucl.ac.uk/id/eprint/10128420 |
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