Paper Title:
Spin Precession from Hyperfine Interaction on Magnetoresistance in Nonmagnetic Organic Semiconductors
  Abstract

We investigate the effect of hyperfine interaction on magnetoresistance in nonmagenetic organic semiconductors. A Lorentz-type magnetoresistance is obtained from hyperfine interaction-dependent spin precession picture. The magnetoresistance depends on initial spin orientation of electron to hole in electron-hole pairs. Increasing hyperfine interaction slows down change of the magnetoresistance with magnetic field. The field dependence, the sign and saturation value of the magnetoresistances are composite effects of recombination and dissociation rate constants of singlet and triplet electron-hole pairs.

  Info
Periodical
Advanced Materials Research (Volumes 287-290)
Chapter
New Energy Materials
Edited by
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
Pages
1443-1447
DOI
10.4028/www.scientific.net/AMR.287-290.1443
Citation
J. Q. Zhao, T. Y. Zhang, Z. F. Jia, M. Ding, N. Y. Zhang, F. X. Wang, Y. J. Ji, Y. T. Pang, Y. Chen, G. Fu, "Spin Precession from Hyperfine Interaction on Magnetoresistance in Nonmagnetic Organic Semiconductors", Advanced Materials Research, Vols. 287-290, pp. 1443-1447, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zhi Gang Zhou, Zi Long Tang, Zhong Tai Zhang
Abstract:A number of paramagnetic defects and defect complexes in BaTiO3 have been detected by the Electron Paramagnetic Resonance (EPR) technique....
373
Authors: Corey J. Cochrane, Patrick M. Lenahan, Aivars J. Lelis
Abstract:We have identified a magnetic resonance spectrum associated with minority carrier lifetime killing defects in device quality 4H SiC.
299
Authors: Artur Wilson Carbonari, José Mestnik-Filho, Rajendra Narain Saxena
Abstract:Perturbed gamma-gamma angular correlation (PAC) spectroscopy is a precise and highly efficient tool to follow the temperature dependence of...
39
Authors: Jatinder V. Yakhmi, Vaishali Bambole
Abstract:The emergence of spintronics (spin-based electronics), which exploits electronic charge as well as the spin degree of freedom to...
95
Authors: Viktor Ivády, Krisztián Szász, Abram L. Falk, Paul V. Klimov, David J. Christle, William F. Koehl, Erik Janzén, Igor A. Abrikosov, David D. Awschalom, Adam Gali
2.1 Fundamental and Material Properties
Abstract:We demonstrate optically pumped dynamic nuclear polarization (DNP) of 29Si nuclear spins that are strongly coupled to paramagnetic...
287