Nature of the density-wave order in ambient-pressure La_3Ni_2O_7 · revision history

Revision 2

Accepted · core change · record

Changes against revision 1:

Title · changed
Revision 1: Nature of the density-wave order in ambient-pressure La3Ni2O7
Revision 2: Nature of the density-wave order in ambient-pressure $\mathrm{La_3Ni_2O_7}$
Plain · changed
Revision 1: At normal pressure La3Ni2O7 does not superconduct but forms a density wave, a periodic pattern of spins and possibly charges, near 150 K; its form and its link to superconductivity are uncertain.
Revision 2: At normal pressure $\mathrm{La_3Ni_2O_7}$ does not superconduct but forms a density wave, a periodic pattern of spins and possibly charges, near $150\ \mathrm{K}$; its form and its link to superconductivity are uncertain.
Precise · changed · core
Revision 1: Identify the spin and charge density-wave order of La3Ni2O7 at ambient pressure (onset near 150 K): wavevector, moment size and arrangement on the bilayer, and any charge component. Determine whether suppression of this order under pressure or strain is necessary for superconductivity. An answer is a refined magnetic structure from neutron or resonant x-ray scattering plus a phase diagram showing where the order vanishes relative to the superconducting onset.
Revision 2: Identify the spin and charge density-wave order of $\mathrm{La_3Ni_2O_7}$ at ambient pressure (onset near $150\ \mathrm{K}$): wavevector, moment size and arrangement on the bilayer, and any charge component. Determine whether suppression of this order under pressure or strain is necessary for superconductivity. An answer is a refined magnetic structure from neutron or resonant x-ray scattering plus a phase diagram showing where the order vanishes relative to the superconducting onset.
Settled by
Single-crystal neutron diffraction and resonant x-ray scattering on stoichiometric crystals, followed under pressure to the superconducting regime.
Kind
well-posed
Answer type
identification
References
(empty)
Literature status
contested
Status note
(empty)
Posed since
(empty)

Decisions