Electrical transport properties of (La,Pr,Ca)MnO3 nanowires investigated using terahertz time domain spectroscopy

T. V.A. Nguyen, A. N. Hattori, M. Nagai, T. Nakamura, M. Ashida, H. Tanaka

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1 Citation (Scopus)

Abstract

The electrical transport properties of a 100-nm-width (La,Pr,Ca)MnO3 nanowire sample were investigated using terahertz (THz) time domain spectroscopy. When the electric field of incident THz pulses was parallel to the nanowires, we obtained their intrinsic THz conductivity. The temperature-dependent dc conductivity and metallic fraction were simultaneously estimated by analyzing the THz conductivity using a metal-insulator composite model. The evaluated dc conductivity closely reproduced that measured by electrical probe measurement. The metallic fraction showed the evolution of electric domains from the metallic state at temperatures below 100 K to the insulating state at temperatures above 150 K through a coexistence region, which was in consistence with the phase-separated scenario.

Original languageEnglish
Article number125102
JournalJournal of Applied Physics
Volume119
Issue number12
DOIs
Publication statusPublished - 2016
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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