Abstract
We discovered iron-based layered superconductors: F-doped LaFePnO (Pn = P, As) in 2006. Several superconductors containing square iron lattice have been reported in 2008. Superconducting transition temperature (T c) of F-doped LnFeAsO (Ln = Nd, Sm, ...) reaches ∼55 K. LaFePnO is a 3d transition-metal (T M) based oxypnic-tides: LnT MPnO. The crystal structure is composed of carrier conducting T m-Pn layer and insulating Ln-O layer. Undoped LnFePO (Ln = La, Sm) shows T c ∼3-5 K, while undoped LnFeAsO shows no T c. The undoped LnFeAsO takes an orthorhombic crystallographic phase at temperatures below ∼160 K, F-doping suppresses the structural transition from tetragonal to orthorhombic phase, stabilizing the tetragonal lattice of LnFeAsO. F-doped LnFeAsO with tetragonal symmetry exhibits T c.
| Original language | English |
|---|---|
| Pages (from-to) | 97-105 |
| Number of pages | 9 |
| Journal | Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2009 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Materials Science(all)
- Chemistry(all)
Cite this
A small history to discovery of iron based high T c superconductors and summary. / Kamihara, Yoichi; Hosono, Hideo.
In: Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu, Vol. 19, No. 2, 2009, p. 97-105.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A small history to discovery of iron based high T c superconductors and summary
AU - Kamihara, Yoichi
AU - Hosono, Hideo
PY - 2009
Y1 - 2009
N2 - We discovered iron-based layered superconductors: F-doped LaFePnO (Pn = P, As) in 2006. Several superconductors containing square iron lattice have been reported in 2008. Superconducting transition temperature (T c) of F-doped LnFeAsO (Ln = Nd, Sm, ...) reaches ∼55 K. LaFePnO is a 3d transition-metal (T M) based oxypnic-tides: LnT MPnO. The crystal structure is composed of carrier conducting T m-Pn layer and insulating Ln-O layer. Undoped LnFePO (Ln = La, Sm) shows T c ∼3-5 K, while undoped LnFeAsO shows no T c. The undoped LnFeAsO takes an orthorhombic crystallographic phase at temperatures below ∼160 K, F-doping suppresses the structural transition from tetragonal to orthorhombic phase, stabilizing the tetragonal lattice of LnFeAsO. F-doped LnFeAsO with tetragonal symmetry exhibits T c.
AB - We discovered iron-based layered superconductors: F-doped LaFePnO (Pn = P, As) in 2006. Several superconductors containing square iron lattice have been reported in 2008. Superconducting transition temperature (T c) of F-doped LnFeAsO (Ln = Nd, Sm, ...) reaches ∼55 K. LaFePnO is a 3d transition-metal (T M) based oxypnic-tides: LnT MPnO. The crystal structure is composed of carrier conducting T m-Pn layer and insulating Ln-O layer. Undoped LnFePO (Ln = La, Sm) shows T c ∼3-5 K, while undoped LnFeAsO shows no T c. The undoped LnFeAsO takes an orthorhombic crystallographic phase at temperatures below ∼160 K, F-doping suppresses the structural transition from tetragonal to orthorhombic phase, stabilizing the tetragonal lattice of LnFeAsO. F-doped LnFeAsO with tetragonal symmetry exhibits T c.
UR - http://www.scopus.com/inward/record.url?scp=67650303127&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67650303127&partnerID=8YFLogxK
U2 - 10.4131/jshpreview.19.97
DO - 10.4131/jshpreview.19.97
M3 - Article
AN - SCOPUS:67650303127
VL - 19
SP - 97
EP - 105
JO - Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
JF - Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
SN - 0917-639X
IS - 2
ER -