We measured the ab-plane resistivity of La2-xSrxCuO4 underdoped single crystals (x = 0.052 and x=0.06) between 4.2 and 300 K by using an AC version of the Van der Pauw technique. We suggest that a possible scenario of charge-stripe ordering at the lowering of the temperature can be delineated by starting from the main features of the ρab (T) curves of these samples. In particular, the deviation from the linearity of the ab-plane resistivity, occurring at a temperature Tch, could be related to the beginning of the charge localization, and the upturn of ρab to the progressive pinning of the resulting charge stripes. By starting from an analysis of our ab-plane resistivity curves, we determined the temperature of charge ordering Tch for our samples, thus extending in consistent way the Tch vs. x curve reported in literature to the very low-doping region of the phase diagram.
Possible evidence of charge-stripe ordering in the ab-plane resistivity of strongly underdoped La_(2-x)Sr_(x)CuO_4 single crystals. / Daghero, D.; Gonnelli, R. S.; Morello, A.; Ummarino, G. A.; Natale, L.; Stepanov, V. A.; Licci, F.; Ubertalli, G.. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B. - ISSN 0217-9792. - STAMPA. - 14:25-27(2000), pp. 2779-2784.
|Titolo:||Possible evidence of charge-stripe ordering in the ab-plane resistivity of strongly underdoped La_(2-x)Sr_(x)CuO_4 single crystals.|
|Data di pubblicazione:||2000|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1142/S0217979200002892|
|Appare nelle tipologie:||1.1 Articolo in rivista|