Commensurate-Incommensurate Crossover of Charge Stripe in La2−xSrxNiO4 ( x∼1/3 ). Ishizaka, K., Arima, T., Murakami, Y., Kajimoto, R., Yoshizawa, H., Nagaosa, N., & Tokura, Y. Physical Review Letters, 92(19):196404+, 2004.
Commensurate-Incommensurate Crossover of Charge Stripe in La2−xSrxNiO4 ( x∼1/3 ) [link]Paper  doi  abstract   bibtex   
The temperature ( T ) dependence of the charge-stripe order in La 2-x Sr x NiO 4 has been investigated in the vicinity of x ∼1/3 by synchrotron radiation x-ray diffraction measurements. With decreasing T , a prominent commensurate-incommensurate (C-IC) crossover is observed in the x \textless1/3 region, while for the x \textgreater1/3 region the IC order is dominant over the whole T range. Such a C-IC crossover is interpreted as the entropy-driven self-doping of the charge stripes, and its x dependence indicates the clear electron-hole asymmetry with the x =1/3 compound as the Mott insulator.
@article{ishizaka_commensurate-incommensurate_2004,
	title = {Commensurate-{Incommensurate} {Crossover} of {Charge} {Stripe} in {La}2−{xSrxNiO}4 ( x∼1/3 )},
	volume = {92},
	issn = {0031-9007},
	url = {http://dx.doi.org/10.1103/physrevlett.92.196404},
	doi = {10.1103/physrevlett.92.196404},
	abstract = {The temperature ( T ) dependence of the charge-stripe order in La 2-x Sr x NiO 4 has been investigated in the vicinity of x ∼1/3 by synchrotron radiation x-ray diffraction measurements. With decreasing T , a prominent commensurate-incommensurate (C-IC) crossover is observed in the x {\textless}1/3 region, while for the x {\textgreater}1/3 region the IC order is dominant over the whole T range. Such a C-IC crossover is interpreted as the entropy-driven self-doping of the charge stripes, and its x dependence indicates the clear electron-hole asymmetry with the x =1/3 compound as the Mott insulator.},
	number = {19},
	journal = {Physical Review Letters},
	author = {Ishizaka, K. and Arima, T. and Murakami, Y. and Kajimoto, R. and Yoshizawa, H. and Nagaosa, N. and Tokura, Y.},
	year = {2004},
	keywords = {radiation, synchrotrin},
	pages = {196404+}
}

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