Orbital occupancy and charge doping in iron-based superconductors

Claudia Cantoni; Jonathan E. Mitchell; Andrew F. May; Michael A. McGuire; Juan Carlos Idrobo; Tom Berlijn; Elbio Dagotto; Matthew F. Chisholm; Wu Zhou; Stephen J. Pennycook; Athena S. Sefat; Brian C. Sales

doi:10.1002/adma.201401518

Orbital occupancy and charge doping in iron-based superconductors

Claudia Cantoni, Jonathan E. Mitchell, Andrew F. May, Michael A. McGuire, Juan Carlos Idrobo, Tom Berlijn, Elbio Dagotto, Matthew F. Chisholm, Wu Zhou, Stephen J. Pennycook, Athena S. Sefat, Brian C. Sales

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

13 Scopus citations

Abstract

The intrinsic Fe local magnetic moment and Fe orbital occupations of iron-based superconductors are unveiled through the local, real-space capability of aberration-corrected scanning transmission electron microscopy/electron energy loss spectroscopy (STEM/EELS). Although the ordering of Fe moments needs to be suppressed for superconductivity to arise, the local, fluctuating Fe magnetic moment is enhanced near optimal superconductivity.

Original language	English
Pages (from-to)	6193-6198
Number of pages	6
Journal	Advanced Materials
Volume	26
Issue number	35
DOIs	https://doi.org/10.1002/adma.201401518
State	Published - Sep 17 2014

Keywords

electron energy loss spectroscopy (EELS)
iron-based superconductors
local magnetic moments
scanning transmission electron microscopy (STEM)

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10.1002/adma.201401518

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title = "Orbital occupancy and charge doping in iron-based superconductors",

abstract = "The intrinsic Fe local magnetic moment and Fe orbital occupations of iron-based superconductors are unveiled through the local, real-space capability of aberration-corrected scanning transmission electron microscopy/electron energy loss spectroscopy (STEM/EELS). Although the ordering of Fe moments needs to be suppressed for superconductivity to arise, the local, fluctuating Fe magnetic moment is enhanced near optimal superconductivity.",

keywords = "electron energy loss spectroscopy (EELS), iron-based superconductors, local magnetic moments, scanning transmission electron microscopy (STEM)",

author = "Claudia Cantoni and Mitchell, {Jonathan E.} and May, {Andrew F.} and McGuire, {Michael A.} and Idrobo, {Juan Carlos} and Tom Berlijn and Elbio Dagotto and Chisholm, {Matthew F.} and Wu Zhou and Pennycook, {Stephen J.} and Sefat, {Athena S.} and Sales, {Brian C.}",

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year = "2014",

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doi = "10.1002/adma.201401518",

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T1 - Orbital occupancy and charge doping in iron-based superconductors

AU - Cantoni, Claudia

AU - Mitchell, Jonathan E.

AU - May, Andrew F.

AU - McGuire, Michael A.

AU - Idrobo, Juan Carlos

AU - Berlijn, Tom

AU - Dagotto, Elbio

AU - Chisholm, Matthew F.

AU - Zhou, Wu

AU - Pennycook, Stephen J.

AU - Sefat, Athena S.

AU - Sales, Brian C.

PY - 2014/9/17

Y1 - 2014/9/17

N2 - The intrinsic Fe local magnetic moment and Fe orbital occupations of iron-based superconductors are unveiled through the local, real-space capability of aberration-corrected scanning transmission electron microscopy/electron energy loss spectroscopy (STEM/EELS). Although the ordering of Fe moments needs to be suppressed for superconductivity to arise, the local, fluctuating Fe magnetic moment is enhanced near optimal superconductivity.

AB - The intrinsic Fe local magnetic moment and Fe orbital occupations of iron-based superconductors are unveiled through the local, real-space capability of aberration-corrected scanning transmission electron microscopy/electron energy loss spectroscopy (STEM/EELS). Although the ordering of Fe moments needs to be suppressed for superconductivity to arise, the local, fluctuating Fe magnetic moment is enhanced near optimal superconductivity.

KW - electron energy loss spectroscopy (EELS)

KW - iron-based superconductors

KW - local magnetic moments

KW - scanning transmission electron microscopy (STEM)

UR - http://www.scopus.com/inward/record.url?scp=85027958604&partnerID=8YFLogxK

U2 - 10.1002/adma.201401518

DO - 10.1002/adma.201401518

M3 - Article

AN - SCOPUS:85027958604

SN - 0935-9648

VL - 26

SP - 6193

EP - 6198

JO - Advanced Materials

JF - Advanced Materials

IS - 35

ER -

Orbital occupancy and charge doping in iron-based superconductors

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Keywords

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