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

14 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.\}",

note = "Publisher Copyright: {\textcopyright} 2014 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

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doi = "10.1002/adma.201401518",

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TY - JOUR

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 - https://www.scopus.com/pages/publications/85027958604

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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