Electronic phase diagram in bandwidth controlled manganites

A. Machida; M. Itoh; Y. Moritomo; S. Mori; N. Yamamoto; K. Ohoyama

doi:10.1016/S0921-4526(99)00799-1

Electronic phase diagram in bandwidth controlled manganites

A. Machida, M. Itoh, Y. Moritomo, S. Mori, N. Yamamoto, K. Ohoyama

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

Abstract

Electronic and magnetic properties for doped manganites, (i) R_1/2Ca_1/2Mn_1-yCr_yO₃ (y = 0.03) and (ii) Nd_1/2+δA_1/2-δMnO₃ (δ = 0.05), where R and A are the trivalent rare-earth and divalent alkaline-earth ions, respectively, have been investigated by systematically changing the averaged ionic radius 〈r_A〉 of perovskite A-site, or the one-electron bandwidth W. In the former system, the charge-ordered (CO) state is unstabilized by Cr-doping on the Mn-site. On the other hand, deviation of doping-level from the quarter-filling (x = 1/2 ) weakens the CO state in the latter case. We have derived electronic phase diagrams for both the systems against 〈r_A〉. We have found a phase separated region near the ferromagnetic metallic (FM)-CO phase boundary.

Original language	English
Pages (from-to)	524-525
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	281-282
DOIs	https://doi.org/10.1016/S0921-4526(99)00799-1
Publication status	Published - 2000 Jun 1
Externally published	Yes
Event	Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn Duration: 1999 Aug 24 → 1999 Aug 28

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(99)00799-1

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title = "Electronic phase diagram in bandwidth controlled manganites",

abstract = "Electronic and magnetic properties for doped manganites, (i) R1/2Ca1/2Mn1-yCryO3 (y = 0.03) and (ii) Nd1/2+δA1/2-δMnO3 (δ = 0.05), where R and A are the trivalent rare-earth and divalent alkaline-earth ions, respectively, have been investigated by systematically changing the averaged ionic radius 〈rA〉 of perovskite A-site, or the one-electron bandwidth W. In the former system, the charge-ordered (CO) state is unstabilized by Cr-doping on the Mn-site. On the other hand, deviation of doping-level from the quarter-filling (x = 1/2 ) weakens the CO state in the latter case. We have derived electronic phase diagrams for both the systems against 〈rA〉. We have found a phase separated region near the ferromagnetic metallic (FM)-CO phase boundary.",

author = "A. Machida and M. Itoh and Y. Moritomo and S. Mori and N. Yamamoto and K. Ohoyama",

year = "2000",

month = jun,

day = "1",

doi = "10.1016/S0921-4526(99)00799-1",

language = "English",

volume = "281-282",

pages = "524--525",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

note = "Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) ; Conference date: 24-08-1999 Through 28-08-1999",

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TY - JOUR

T1 - Electronic phase diagram in bandwidth controlled manganites

AU - Machida, A.

AU - Itoh, M.

AU - Moritomo, Y.

AU - Mori, S.

AU - Yamamoto, N.

AU - Ohoyama, K.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - Electronic and magnetic properties for doped manganites, (i) R1/2Ca1/2Mn1-yCryO3 (y = 0.03) and (ii) Nd1/2+δA1/2-δMnO3 (δ = 0.05), where R and A are the trivalent rare-earth and divalent alkaline-earth ions, respectively, have been investigated by systematically changing the averaged ionic radius 〈rA〉 of perovskite A-site, or the one-electron bandwidth W. In the former system, the charge-ordered (CO) state is unstabilized by Cr-doping on the Mn-site. On the other hand, deviation of doping-level from the quarter-filling (x = 1/2 ) weakens the CO state in the latter case. We have derived electronic phase diagrams for both the systems against 〈rA〉. We have found a phase separated region near the ferromagnetic metallic (FM)-CO phase boundary.

AB - Electronic and magnetic properties for doped manganites, (i) R1/2Ca1/2Mn1-yCryO3 (y = 0.03) and (ii) Nd1/2+δA1/2-δMnO3 (δ = 0.05), where R and A are the trivalent rare-earth and divalent alkaline-earth ions, respectively, have been investigated by systematically changing the averaged ionic radius 〈rA〉 of perovskite A-site, or the one-electron bandwidth W. In the former system, the charge-ordered (CO) state is unstabilized by Cr-doping on the Mn-site. On the other hand, deviation of doping-level from the quarter-filling (x = 1/2 ) weakens the CO state in the latter case. We have derived electronic phase diagrams for both the systems against 〈rA〉. We have found a phase separated region near the ferromagnetic metallic (FM)-CO phase boundary.

UR - http://www.scopus.com/inward/record.url?scp=0033894013&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033894013&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(99)00799-1

DO - 10.1016/S0921-4526(99)00799-1

M3 - Conference article

AN - SCOPUS:0033894013

SN - 0921-4526

VL - 281-282

SP - 524

EP - 525

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99)

Y2 - 24 August 1999 through 28 August 1999

ER -

Electronic phase diagram in bandwidth controlled manganites

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