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The Resource Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements, by Kenichiro Hashimoto, (electronic resource)

Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements, by Kenichiro Hashimoto, (electronic resource)

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Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements
Title
Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements
Statement of responsibility
by Kenichiro Hashimoto
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Language
eng
Summary
In this book the author presents two important findings revealed by high-precision magnetic penetration depth measurements in iron-based superconductors which exhibit high-transition temperature superconductivity up to 55 K: one is the fact that the superconducting gap structure in iron-based superconductors depends on a detailed electronic structure of individual materials, and the other is the first strong evidence for the presence of a quantum critical point (QCP) beneath the superconducting dome of iron-based superconductors. The magnetic penetration depth is a powerful probe to elucidate the superconducting gap structure which is intimately related to the pairing mechanism of superconductivity. The author discusses the possible gap structure of individual iron-based superconductors by comparing the gap structure obtained from the penetration depth measurements with theoretical predictions, indicating that the non-universal superconducting gap structure in iron-pnictides can be interpreted in the framework of A1g symmetry. This result imposes a strong constraint on the pairing mechanism of iron-based superconductors. The author also shows clear evidence for the quantum criticality inside the superconducting dome from the absolute zero-temperature penetration depth measurements as a function of chemical composition. A sharp peak of the penetration depth at a certain composition demonstrates pronounced quantum fluctuations associated with the QCP, which separates two distinct superconducting phases. This gives the first convincing signature of a second-order quantum phase transition deep inside the superconducting dome, which may address a key question on the general phase diagram of unconventional superconductivity in the vicinity of a QCP
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Literary form
non fiction
Series statement
Springer Theses, Recognizing Outstanding Ph.D. Research,
Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements, by Kenichiro Hashimoto, (electronic resource)
Label
Non-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements, by Kenichiro Hashimoto, (electronic resource)
Link
http://libproxy.rpi.edu/login?url=http://dx.doi.org/10.1007/978-4-431-54294-0
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Antecedent source
mixed
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
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not applicable
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
Introduction -- Superconducting Gap Structure and Magnetic Penetration Depth -- Iron-based Superconductors -- Experimental Method -- Superconducting Gap Structure and Quantum Critical Point in BaFe2(As1-xPx)2 -- Superconducting Gap Nodes in the Zone-centered Hole Bands of KFe2As2 -- Nodeless vs. Nodal Order Parameter in LiFeAs and LiFeP -- Conclusions
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https://contentcafe2.btol.com/ContentCafe/Jacket.aspx?Return=1&Type=S&Value=9784431542940&userID=ebsco-test&password=ebsco-test
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{'f': 'http://opac.lib.rpi.edu/record=b3388098'}
Extent
XIII, 125 p. 74 illus., 45 illus. in color.
File format
multiple file formats
Form of item
electronic
Isbn
9784431542940
Level of compression
uncompressed
Media category
computer
Media MARC source
rdamedia
Media type code
c
Other physical details
online resource.
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absent
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access
Specific material designation
remote

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