Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Low-temperature nonlinear effects of conductivity of lightly doped cuprates La2-xSrxCuO4 in antiferromagnetic state. / Dalakova, N. V.; Belevtsev, B. I.; Belyaev, E. Yu.; Panfilov, A. S.; Bobrysheva, N. P.; Selyutin, A. A.
в: Low Temperature Physics, Том 40, № 5, 2014, стр. 397-407.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Low-temperature nonlinear effects of conductivity of lightly doped cuprates La2-xSrxCuO4 in antiferromagnetic state
AU - Dalakova, N. V.
AU - Belevtsev, B. I.
AU - Belyaev, E. Yu.
AU - Panfilov, A. S.
AU - Bobrysheva, N. P.
AU - Selyutin, A. A.
PY - 2014
Y1 - 2014
N2 - The low-temperature conductivity of antiferromagnetic cuprates La 2-xSrxCuO4, prepared by solid-phase synthesis was investigated. The concentration of stron-tium in the samples was 0.01, 0.005 and 0.001. In the temperature range T < 100 K for all the samples the conduction mechanism was appropriate to variable range hopping for 3D systems. For T > TN (where TN is the Neel temperature) the transition to a metallic type of conductivity was observed. We have found nonlinear effects in low-temperature conductivity, magnetoresistivity and current-driven negative differ-ential resistivity. We also found out that nonlinear be-havior of conductivity increased with decreasing strontium concentration. For temperatures T < 10 K, the effect of positive magnetoresistance was observed. We suggest that this effect can be attributed to the pre-sence of a new low-temperature magnetic phase (spin density wave).
AB - The low-temperature conductivity of antiferromagnetic cuprates La 2-xSrxCuO4, prepared by solid-phase synthesis was investigated. The concentration of stron-tium in the samples was 0.01, 0.005 and 0.001. In the temperature range T < 100 K for all the samples the conduction mechanism was appropriate to variable range hopping for 3D systems. For T > TN (where TN is the Neel temperature) the transition to a metallic type of conductivity was observed. We have found nonlinear effects in low-temperature conductivity, magnetoresistivity and current-driven negative differ-ential resistivity. We also found out that nonlinear be-havior of conductivity increased with decreasing strontium concentration. For temperatures T < 10 K, the effect of positive magnetoresistance was observed. We suggest that this effect can be attributed to the pre-sence of a new low-temperature magnetic phase (spin density wave).
KW - Cuprate superconductors
KW - Hopping conductivity
KW - Nonlinear effects con-ductivity
KW - Structural heterogeneity
UR - http://www.scopus.com/inward/record.url?scp=84899786204&partnerID=8YFLogxK
U2 - 10.1063/1.4881175
DO - 10.1063/1.4881175
M3 - Article
VL - 40
SP - 397
EP - 407
JO - Low Temperature Physics
JF - Low Temperature Physics
SN - 1063-777X
IS - 5
ER -
ID: 7016045