Negative thermoelectric power induced by positive carriers in CaMn 3-xCuxMn4O12

Wataru Kobayashi; Ichiro Terasaki; Masashi Mikami; Ryoji Funahashi

doi:10.1143/JPSJ.73.523

Negative thermoelectric power induced by positive carriers in CaMn 3-xCuxMn4O12

Wataru Kobayashi, Ichiro Terasaki, Masashi Mikami, Ryoji Funahashi

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

We have found that the thermoelectric power of the ordered perovskite CaMn_3-xCu_xMn₄O₁₂ is negative at high temperature (-35 μV/K at 1000 K), although this material is a hole-doped conductor in which Cu²⁺ is substituted for Mn³⁺. This is quantitatively explained by the extended Heikes formula, where entropy flows in a direction opposite to the charge.

Original language	English
Pages (from-to)	523-525
Number of pages	3
Journal	Journal of the Physical Society of Japan
Volume	73
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.73.523
Publication status	Published - 2004 Mar

Keywords

Heikes formula
Spin and orbital degeneracy
Thermoelectric power
Transition-metal oxide

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.73.523

Fingerprint Dive into the research topics of 'Negative thermoelectric power induced by positive carriers in CaMn 3-xCuxMn4O12'. Together they form a unique fingerprint.

Cite this

@article{4cf564d3ee2844f195aa23aa4a2af8cf,

title = "Negative thermoelectric power induced by positive carriers in CaMn 3-xCuxMn4O12 ",

abstract = "We have found that the thermoelectric power of the ordered perovskite CaMn3-xCuxMn4O12 is negative at high temperature (-35 μV/K at 1000 K), although this material is a hole-doped conductor in which Cu2+ is substituted for Mn3+. This is quantitatively explained by the extended Heikes formula, where entropy flows in a direction opposite to the charge.",

keywords = "Heikes formula, Spin and orbital degeneracy, Thermoelectric power, Transition-metal oxide",

author = "Wataru Kobayashi and Ichiro Terasaki and Masashi Mikami and Ryoji Funahashi",

year = "2004",

month = mar,

doi = "10.1143/JPSJ.73.523",

language = "English",

volume = "73",

pages = "523--525",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "3",

}

TY - JOUR

T1 - Negative thermoelectric power induced by positive carriers in CaMn 3-xCuxMn4O12

AU - Kobayashi, Wataru

AU - Terasaki, Ichiro

AU - Mikami, Masashi

AU - Funahashi, Ryoji

PY - 2004/3

Y1 - 2004/3

N2 - We have found that the thermoelectric power of the ordered perovskite CaMn3-xCuxMn4O12 is negative at high temperature (-35 μV/K at 1000 K), although this material is a hole-doped conductor in which Cu2+ is substituted for Mn3+. This is quantitatively explained by the extended Heikes formula, where entropy flows in a direction opposite to the charge.

AB - We have found that the thermoelectric power of the ordered perovskite CaMn3-xCuxMn4O12 is negative at high temperature (-35 μV/K at 1000 K), although this material is a hole-doped conductor in which Cu2+ is substituted for Mn3+. This is quantitatively explained by the extended Heikes formula, where entropy flows in a direction opposite to the charge.

KW - Heikes formula

KW - Spin and orbital degeneracy

KW - Thermoelectric power

KW - Transition-metal oxide

UR - http://www.scopus.com/inward/record.url?scp=2942667956&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2942667956&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.73.523

DO - 10.1143/JPSJ.73.523

M3 - Article

AN - SCOPUS:2942667956

VL - 73

SP - 523

EP - 525

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 3

ER -