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001 | sulb-eb0025933 | ||
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005 | 20160413122556.0 | ||
007 | cr nn 008mamaa | ||
008 | 130217s2013 ja | s |||| 0|eng d | ||
020 |
_a9784431542940 _9978-4-431-54294-0 |
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024 | 7 |
_a10.1007/978-4-431-54294-0 _2doi |
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050 | 4 | _aQC611.9-611.98 | |
072 | 7 |
_aTJFD5 _2bicssc |
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072 | 7 |
_aTEC039000 _2bisacsh |
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072 | 7 |
_aSCI021000 _2bisacsh |
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082 | 0 | 4 |
_a530.41 _223 |
100 | 1 |
_aHashimoto, Kenichiro. _eauthor. |
|
245 | 1 | 0 |
_aNon-Universal Superconducting Gap Structure in Iron-Pnictides Revealed by Magnetic Penetration Depth Measurements _h[electronic resource] / _cby Kenichiro Hashimoto. |
264 | 1 |
_aTokyo : _bSpringer Japan : _bImprint: Springer, _c2013. |
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300 |
_aXIII, 125 p. 74 illus., 45 illus. in color. _bonline resource. |
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336 |
_atext _btxt _2rdacontent |
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337 |
_acomputer _bc _2rdamedia |
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338 |
_aonline resource _bcr _2rdacarrier |
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347 |
_atext file _bPDF _2rda |
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490 | 1 |
_aSpringer Theses, Recognizing Outstanding Ph.D. Research, _x2190-5053 |
|
505 | 0 | _aIntroduction -- 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. | |
520 | _aIn 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. | ||
650 | 0 | _aPhysics. | |
650 | 0 | _aQuantum physics. | |
650 | 0 | _aSuperconductivity. | |
650 | 0 | _aSuperconductors. | |
650 | 0 | _aMagnetism. | |
650 | 0 | _aMagnetic materials. | |
650 | 1 | 4 | _aPhysics. |
650 | 2 | 4 | _aStrongly Correlated Systems, Superconductivity. |
650 | 2 | 4 | _aQuantum Physics. |
650 | 2 | 4 | _aMagnetism, Magnetic Materials. |
710 | 2 | _aSpringerLink (Online service) | |
773 | 0 | _tSpringer eBooks | |
776 | 0 | 8 |
_iPrinted edition: _z9784431542933 |
830 | 0 |
_aSpringer Theses, Recognizing Outstanding Ph.D. Research, _x2190-5053 |
|
856 | 4 | 0 | _uhttp://dx.doi.org/10.1007/978-4-431-54294-0 |
912 | _aZDB-2-PHA | ||
942 |
_2Dewey Decimal Classification _ceBooks |
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999 |
_c48025 _d48025 |