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Orbital-Independent Superconducting Gaps in Iron Pnictides

The origin of superconductivity in the iron pnictides is usually attributed to antiferromagnetism associated with a structural transition that gives rise to spin-density waves. However, there have been suggestions that orbital ordering effects may play a role. Shimojima et al. (p. 564, published onl... Full description

Journal Title: Science Apr 29, 2011, Vol.332(6029), pp.564-567
Main Author: Shimojima, T
Other Authors: Sakaguchi, F , Ishizaka, K , Ishida, Y , Kiss, T , Okawa, M , Togashi, T , Watanabe, S , Arita, M , Shimada, K , Namatame, H , Taniguchi, M , Ohgushi, K , Kasahara, S , Terashima, T , Shibauchi, T , Matsuda, Y , Chainani, A , Shin, S
Format: Electronic Article Electronic Article
Language: English
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ID: ISSN: 00368075 ; E-ISSN: 10959203 ; DOI: 10.1126/science.1202150
Link: http://search.proquest.com/docview/863933498/?pq-origsite=primo
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title: Orbital-Independent Superconducting Gaps in Iron Pnictides
format: Article
creator:
  • Shimojima, T
  • Sakaguchi, F
  • Ishizaka, K
  • Ishida, Y
  • Kiss, T
  • Okawa, M
  • Togashi, T
  • Watanabe, S
  • Arita, M
  • Shimada, K
  • Namatame, H
  • Taniguchi, M
  • Ohgushi, K
  • Kasahara, S
  • Terashima, T
  • Shibauchi, T
  • Matsuda, Y
  • Chainani, A
  • Shin, S
subjects:
  • Superconductivity
  • Superconductors
  • Physics
ispartof: Science, Apr 29, 2011, Vol.332(6029), pp.564-567
description: The origin of superconductivity in the iron pnictides is usually attributed to antiferromagnetism associated with a structural transition that gives rise to spin-density waves. However, there have been suggestions that orbital ordering effects may play a role. Shimojima et al. (p. 564, published online 7 April) used laser excitation to obtain angle-resolved photoemission spectra from the subsurface regions of two iron pnictides, BaFe2(As0.65P0.35)2 and Ba0.6K0.4Fe2As2. The Fermi surfaces of the hole charge carrier in each material have the same superconducting gap magnitude, which suggests that magnetism-induced pairing between orbitals, orbital fluctuations, or both effects may play a role in creating the superconducting state. The origin of superconductivity in the iron pnictides has been attributed to antiferromagnetic spin ordering that occurs in close combination with a structural transition, but there are also proposals that link superconductivity to orbital ordering. We used bulk-sensitive...
language: eng
source:
identifier: ISSN: 00368075 ; E-ISSN: 10959203 ; DOI: 10.1126/science.1202150
fulltext: no_fulltext
issn:
  • 00368075
  • 0036-8075
  • 10959203
  • 1095-9203
url: Link


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titleOrbital-Independent Superconducting Gaps in Iron Pnictides
creatorShimojima, T ; Sakaguchi, F ; Ishizaka, K ; Ishida, Y ; Kiss, T ; Okawa, M ; Togashi, T ; Watanabe, S ; Arita, M ; Shimada, K ; Namatame, H ; Taniguchi, M ; Ohgushi, K ; Kasahara, S ; Terashima, T ; Shibauchi, T ; Matsuda, Y ; Chainani, A ; Shin, S
ispartofScience, Apr 29, 2011, Vol.332(6029), pp.564-567
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subjectSuperconductivity ; Superconductors ; Physics
descriptionThe origin of superconductivity in the iron pnictides is usually attributed to antiferromagnetism associated with a structural transition that gives rise to spin-density waves. However, there have been suggestions that orbital ordering effects may play a role. Shimojima et al. (p. 564, published online 7 April) used laser excitation to obtain angle-resolved photoemission spectra from the subsurface regions of two iron pnictides, BaFe2(As0.65P0.35)2 and Ba0.6K0.4Fe2As2. The Fermi surfaces of the hole charge carrier in each material have the same superconducting gap magnitude, which suggests that magnetism-induced pairing between orbitals, orbital fluctuations, or both effects may play a role in creating the superconducting state. The origin of superconductivity in the iron pnictides has been attributed to antiferromagnetic spin ordering that occurs in close combination with a structural transition, but there are also proposals that link superconductivity to orbital ordering. We used bulk-sensitive...
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titleOrbital-Independent Superconducting Gaps in Iron Pnictides
descriptionThe origin of superconductivity in the iron pnictides is usually attributed to antiferromagnetism associated with a structural transition that gives rise to spin-density waves. However, there have been suggestions that orbital ordering effects may play a role. Shimojima et al. (p. 564, published online 7 April) used laser excitation to obtain angle-resolved photoemission spectra from the subsurface regions of two iron pnictides, BaFe2(As0.65P0.35)2 and Ba0.6K0.4Fe2As2. The Fermi surfaces of the hole charge carrier in each material have the same superconducting gap magnitude, which suggests that magnetism-induced pairing between orbitals, orbital fluctuations, or both effects may play a role in creating the superconducting state. The origin of superconductivity in the iron pnictides has been attributed to antiferromagnetic spin ordering that occurs in close combination with a structural transition, but there are also proposals that link superconductivity to orbital ordering. We used bulk-sensitive...
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titleOrbital-Independent Superconducting Gaps in Iron Pnictides
authorShimojima, T ; Sakaguchi, F ; Ishizaka, K ; Ishida, Y ; Kiss, T ; Okawa, M ; Togashi, T ; Watanabe, S ; Arita, M ; Shimada, K ; Namatame, H ; Taniguchi, M ; Ohgushi, K ; Kasahara, S ; Terashima, T ; Shibauchi, T ; Matsuda, Y ; Chainani, A ; Shin, S
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abstractThe origin of superconductivity in the iron pnictides is usually attributed to antiferromagnetism associated with a structural transition that gives rise to spin-density waves. However, there have been suggestions that orbital ordering effects may play a role. Shimojima et al. (p. 564, published online 7 April) used laser excitation to obtain angle-resolved photoemission spectra from the subsurface regions of two iron pnictides, BaFe2(As0.65P0.35)2 and Ba0.6K0.4Fe2As2. The Fermi surfaces of the hole charge carrier in each material have the same superconducting gap magnitude, which suggests that magnetism-induced pairing between orbitals, orbital fluctuations, or both effects may play a role in creating the superconducting state. The origin of superconductivity in the iron pnictides has been attributed to antiferromagnetic spin ordering that occurs in close combination with a structural transition, but there are also proposals that link superconductivity to orbital ordering. We used bulk-sensitive...
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pubThe American Association for the Advancement of Science
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date2011-04-29