Non-linear electronic transport and anomalous resistance fluctuations in the stripes state of $La_2NiO_{4.14}$

Details Non-linear electronic transport and anomalous resistance fluctuations in the stripes state of $La_2NiO_{4.14}$ Non-linear electronic transport and anomalous resistance fluctuations in the stripes state of $La_2NiO_{4.14}$

2007-01-08

arxiv.org/abs/cond-mat/0701140v1

Physics

Condensed Matter

Strongly Correlated Electrons

accepted in Phys Rev B

Scientific paper

We report on electronic transport measurements in $La_2NiO_{4.14}$. Non-Ohmic and hysteretic $V(I)$ curves are measured for $T \lesssim$ 220 $K$. Large and non Gaussian resistance fluctuations can be observed, with strong cooling rate dependence. During a slow cooling, the resistance reaches plateaus and then suddenly jumps for $T \lesssim$ 100 $K$, evidencing a macroscopic freezing of the charges. Anti-correlation between time-series of orthogonal resistances is also observed. These results are discussed in the framework of the stripes state scenario.

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