TY - JOUR
T1 - Variable-range hopping conductivity in the copper-oxygen chains of La3Sr3Ca8Cu24O41
AU - Vuletić, T.
AU - Korin-Hamzić, B.
AU - Tomić, S.
AU - Gorshunov, B.
AU - Haas, P.
AU - Dressel, M.
AU - Akimitsu, J.
AU - Sasaki, T.
AU - Nagata, T.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/5/29
Y1 - 2003/5/29
N2 - We show that the spin chain/ladder compound La3Sr3Ca8Cu24O41 is an insulator with hopping transport along the chains. In the temperature range 35–280 K, dc conductivity σdc(T) follows Mott’s law of variable-range hopping conduction; the frequency dependence has the form σ(ν, T) = σdc(T) + A(T)νs, where s ≈ 1. The conduction mechanism changes from variable-range hopping to nearest-neighbor hopping around Tc = 300 K. The chain array thus behaves as a one-dimensional disordered system. Disorder is due to random structural distortions of chains induced by irregular coordination of the La/Sr/Ca ions.
AB - We show that the spin chain/ladder compound La3Sr3Ca8Cu24O41 is an insulator with hopping transport along the chains. In the temperature range 35–280 K, dc conductivity σdc(T) follows Mott’s law of variable-range hopping conduction; the frequency dependence has the form σ(ν, T) = σdc(T) + A(T)νs, where s ≈ 1. The conduction mechanism changes from variable-range hopping to nearest-neighbor hopping around Tc = 300 K. The chain array thus behaves as a one-dimensional disordered system. Disorder is due to random structural distortions of chains induced by irregular coordination of the La/Sr/Ca ions.
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U2 - 10.1103/PhysRevB.67.184521
DO - 10.1103/PhysRevB.67.184521
M3 - Article
AN - SCOPUS:85038984239
VL - 67
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 18
ER -