Fig. 3: Magnetic signatures tracking spin-density-wave order.
From: Suppression of intertwined density waves in La4Ni3-xCuxO10+δ
a−f Temperature-dependent magnetic susceptibility (\(\chi\)) for La4Ni3-xCuxO10+δ is shown in solid blue lines. The orange dashed lines represent the temperature-dependent first derivative of the magnetic susceptibility. The density wave transition, extracted from the first derivative, is indicated by the vertical blue dotted lines. The suppression of the transition with increasing Cu content closely mirrors the trend observed in resistivity measurements, however, the transition signature persists for \(x > 0.15\), and the width of the transition doesn’t broaden with Cu substitution, unlike in the resistivity. For \(x > 0.3\), the transition is fully suppressed and no kink is observed in the magnetic susceptibility, as \(\chi\) becomes largely paramagnetic.
