Electronic transport properties of charge-ordered Bi0.4Ca0.6MnO3 film

Yunzhong Chen; J. R. Sun; D. J.  Wang; S.  Liang; J Z Wang; Y. N.  Han; B S  Han; B. G. Shen

doi:10.1088/0953-8984/19/44/442001

Electronic transport properties of charge-ordered Bi_0.4Ca_0.6MnO₃ film

Yunzhong Chen, J. R. Sun, D. J. Wang, S. Liang, J Z Wang, Y. N. Han, B S Han, B. G. Shen

Chinese Academy of Sciences

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The electronic transport properties of charge-ordered Bi_0.4Ca_0.6MnO₃ films grown on a (110) SrTiO₃ substrate are experimentally studied. Special attention has been paid to the Hall effect around the charge-ordering (CO) transition. The charge carriers are found to be electron-like, and the carrier density n exhibits a significant change upon the CO transition: it is nearly constant above the transition temperature T_co, ∼0.36 electrons/Mn, and reduces with decrease of the temperature below T_co following the formula n ∝ exp(−E_H/k_BT ), with an activation energy E_H of ∼0.13 eV. In contrast, no obvious signatures of thermal activation for Hall mobility were observed. Meanwhile, it is revealed that magnetic field affects the resistivity by enhancing the carrier mobility of the film in the course of the CO transition.

Original language	English
Article number	442001
Journal	Journal of Physics Condensed Matter
Volume	19
Number of pages	6
ISSN	0953-8984
DOIs	https://doi.org/10.1088/0953-8984/19/44/442001
Publication status	Published - 2007
Externally published	Yes

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@article{200317e239c847fd9dd3b345e418c891,

title = "Electronic transport properties of charge-ordered Bi0.4Ca0.6MnO3 film",

abstract = "The electronic transport properties of charge-ordered Bi0.4Ca0.6MnO3 films grown on a (110) SrTiO3 substrate are experimentally studied. Special attention has been paid to the Hall effect around the charge-ordering (CO) transition. The charge carriers are found to be electron-like, and the carrier density n exhibits a significant change upon the CO transition: it is nearly constant above the transition temperature Tco, ∼0.36 electrons/Mn, and reduces with decrease of the temperature below Tco following the formula n ∝ exp(−EH/kBT ), with an activation energy EH of ∼0.13 eV. In contrast, no obvious signatures of thermal activation for Hall mobility were observed. Meanwhile, it is revealed that magnetic field affects the resistivity by enhancing the carrier mobility of the film in the course of the CO transition.",

author = "Yunzhong Chen and Sun, {J. R.} and Wang, {D. J.} and S. Liang and Wang, {J Z} and Han, {Y. N.} and Han, {B S} and Shen, {B. G.}",

year = "2007",

doi = "10.1088/0953-8984/19/44/442001",

language = "English",

volume = "19",

journal = "Journal of Physics Condensed Matter",

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TY - JOUR

T1 - Electronic transport properties of charge-ordered Bi0.4Ca0.6MnO3 film

AU - Chen, Yunzhong

AU - Sun, J. R.

AU - Wang, D. J.

AU - Liang, S.

AU - Wang, J Z

AU - Han, Y. N.

AU - Han, B S

AU - Shen, B. G.

PY - 2007

Y1 - 2007

N2 - The electronic transport properties of charge-ordered Bi0.4Ca0.6MnO3 films grown on a (110) SrTiO3 substrate are experimentally studied. Special attention has been paid to the Hall effect around the charge-ordering (CO) transition. The charge carriers are found to be electron-like, and the carrier density n exhibits a significant change upon the CO transition: it is nearly constant above the transition temperature Tco, ∼0.36 electrons/Mn, and reduces with decrease of the temperature below Tco following the formula n ∝ exp(−EH/kBT ), with an activation energy EH of ∼0.13 eV. In contrast, no obvious signatures of thermal activation for Hall mobility were observed. Meanwhile, it is revealed that magnetic field affects the resistivity by enhancing the carrier mobility of the film in the course of the CO transition.

AB - The electronic transport properties of charge-ordered Bi0.4Ca0.6MnO3 films grown on a (110) SrTiO3 substrate are experimentally studied. Special attention has been paid to the Hall effect around the charge-ordering (CO) transition. The charge carriers are found to be electron-like, and the carrier density n exhibits a significant change upon the CO transition: it is nearly constant above the transition temperature Tco, ∼0.36 electrons/Mn, and reduces with decrease of the temperature below Tco following the formula n ∝ exp(−EH/kBT ), with an activation energy EH of ∼0.13 eV. In contrast, no obvious signatures of thermal activation for Hall mobility were observed. Meanwhile, it is revealed that magnetic field affects the resistivity by enhancing the carrier mobility of the film in the course of the CO transition.

U2 - 10.1088/0953-8984/19/44/442001

DO - 10.1088/0953-8984/19/44/442001

M3 - Journal article

SN - 0953-8984

VL - 19

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

M1 - 442001