Organic magnetoresistance based on hopping theory

For the organic magnetoresistance （OMAR） effect, we suggest a spin-related hopping of carriers （polarons） based on Marcus theory. The mobility of polarons is calculated with the master equation （ME） and then the magnetoresistance （MR） is obtained. The theoretical results are consistent with the expe...

Full description

Saved in:
Bibliographic Details
Published inChinese physics B Vol. 23; no. 9; pp. 404 - 408
Main Author 杨福江 解士杰
Format Journal Article
LanguageEnglish
Published 01.09.2014
Subjects
Disorders
Electric potential
Inversions
Localization
Magnetoresistance
Magnetoresistivity
Mathematical analysis
Polarons
Voltage
主方程
实验观察
携带者
极化子
磁阻
自旋相关
超精细相互作用
跳频
Online AccessGet full text

Cover

More Information
Summary:For the organic magnetoresistance （OMAR） effect, we suggest a spin-related hopping of carriers （polarons） based on Marcus theory. The mobility of polarons is calculated with the master equation （ME） and then the magnetoresistance （MR） is obtained. The theoretical results are consistent with the experimental observation. Especially, the sign inversion of the MR under different driving bias voltages found in the experiment is predicted. Besides, the effects of molecule disorder, hyperfine interaction （HFI）, polaron localization, and temperature on the MR are investigated.
Bibliography:hopping, organic magnetoresistance, master equation, hyperfine interaction
Yang Fu-Jiang, Xie Shi-Jie（School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 2501130, China）
For the organic magnetoresistance （OMAR） effect, we suggest a spin-related hopping of carriers （polarons） based on Marcus theory. The mobility of polarons is calculated with the master equation （ME） and then the magnetoresistance （MR） is obtained. The theoretical results are consistent with the experimental observation. Especially, the sign inversion of the MR under different driving bias voltages found in the experiment is predicted. Besides, the effects of molecule disorder, hyperfine interaction （HFI）, polaron localization, and temperature on the MR are investigated.
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/9/097306