TY - JOUR
T1 - Superconductivity tuned by the iron vacancy order in KxFe2-ySe2
AU - BAO Wei (鲍威), null
AU - LI Guan-Nan (李冠男), null
AU - HUANG Qing-Zhen (黄清镇), null
AU - CHEN Gen-Fu (陈根富), null
AU - HE Jun-Bao (何俊宝), null
AU - WANG Du-Ming (王笃明), null
AU - Green, M. A.
AU - QIU Yi-Ming (邱义铭), null
AU - LUO Jian-Lin (雒建林), null
AU - WU Mei-Mei (武梅梅), null
PY - 2013/2
Y1 - 2013/2
N2 - Combining in-depth neutron diffraction and systematic bulk studies, we discover that the 5 × 5 Fe vacancy order, with its associated block antiferromagnetic order, is the ground state with varying occupancy ratios of the iron 16i and vacancy 4d sites across the phase-diagram of KxFe2-ySe2 . The orthorhombic order, with one of the four Fe sites vacant, appears only at intermediate temperatures as a competing phase. The material experiences an insulator to metal crossover when the √5 × √5 order is highly developed. Superconductivity occurs in such a metallic phase. ©2013 Chinese Physical Society and IOP Publishing Ltd
AB - Combining in-depth neutron diffraction and systematic bulk studies, we discover that the 5 × 5 Fe vacancy order, with its associated block antiferromagnetic order, is the ground state with varying occupancy ratios of the iron 16i and vacancy 4d sites across the phase-diagram of KxFe2-ySe2 . The orthorhombic order, with one of the four Fe sites vacant, appears only at intermediate temperatures as a competing phase. The material experiences an insulator to metal crossover when the √5 × √5 order is highly developed. Superconductivity occurs in such a metallic phase. ©2013 Chinese Physical Society and IOP Publishing Ltd
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U2 - 10.1088/0256-307X/30/2/027402
DO - 10.1088/0256-307X/30/2/027402
M3 - RGC 21 - Publication in refereed journal
SN - 0256-307X
VL - 30
JO - Chinese Physics Letters
JF - Chinese Physics Letters
IS - 2
M1 - 027402
ER -