Superconductivity tuned by the iron vacancy order in KxFe2-ySe2

Wei BAO Wei (鲍威); null LI Guan-Nan (李冠男); null HUANG Qing-Zhen (黄清镇); null CHEN Gen-Fu (陈根富); null HE Jun-Bao (何俊宝); null WANG Du-Ming (王笃明); M. A. Green; null QIU Yi-Ming (邱义铭); null LUO Jian-Lin (雒建林); null WU Mei-Mei (武梅梅)

doi:10.1088/0256-307X/30/2/027402

Author(s)

LI Guan-Nan (李冠男)
HUANG Qing-Zhen (黄清镇)
CHEN Gen-Fu (陈根富)
HE Jun-Bao (何俊宝)
WANG Du-Ming (王笃明)
M. A. Green
QIU Yi-Ming (邱义铭)
LUO Jian-Lin (雒建林)
WU Mei-Mei (武梅梅)

Detail(s)

Original language	English
Article number	027402
Journal / Publication	Chinese Physics Letters
Volume	30
Issue number	2
Publication status	Published - Feb 2013
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1088/0256-307X/30/2/027402 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84874323326&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(a3917b55-5261-4965-9f2e-bd50c0cac373).html

Abstract

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 K_xFe_2-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

Citation Format(s)

[ RIS ] [ BibTeX ]

Superconductivity tuned by the iron vacancy order in K_xFe_2-ySe₂. / BAO Wei (鲍威); LI Guan-Nan (李冠男); HUANG Qing-Zhen (黄清镇) et al.

In: Chinese Physics Letters, Vol. 30, No. 2, 027402, 02.2013.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

BAO Wei (鲍威), LI Guan-Nan (李冠男), HUANG Qing-Zhen (黄清镇), CHEN Gen-Fu (陈根富), HE Jun-Bao (何俊宝), WANG Du-Ming (王笃明), Green, MA, QIU Yi-Ming (邱义铭), LUO Jian-Lin (雒建林) & WU Mei-Mei (武梅梅) 2013, 'Superconductivity tuned by the iron vacancy order in K_xFe_2-ySe₂', Chinese Physics Letters, vol. 30, no. 2, 027402. https://doi.org/10.1088/0256-307X/30/2/027402

BAO Wei (鲍威), LI Guan-Nan (李冠男), HUANG Qing-Zhen (黄清镇), CHEN Gen-Fu (陈根富), HE Jun-Bao (何俊宝), WANG Du-Ming (王笃明), Green, M. A., QIU Yi-Ming (邱义铭), LUO Jian-Lin (雒建林), & WU Mei-Mei (武梅梅) (2013). Superconductivity tuned by the iron vacancy order in K_xFe_2-ySe₂. Chinese Physics Letters, 30(2), [027402]. https://doi.org/10.1088/0256-307X/30/2/027402

BAO Wei (鲍威), LI Guan-Nan (李冠男), HUANG Qing-Zhen (黄清镇), CHEN Gen-Fu (陈根富), HE Jun-Bao (何俊宝), WANG Du-Ming (王笃明) et al. Superconductivity tuned by the iron vacancy order in K_xFe_2-ySe₂. Chinese Physics Letters. 2013 Feb;30(2):027402. doi: 10.1088/0256-307X/30/2/027402

BAO Wei (鲍威) ; LI Guan-Nan (李冠男) ; HUANG Qing-Zhen (黄清镇) et al. / Superconductivity tuned by the iron vacancy order in K_xFe_2-ySe₂. In: Chinese Physics Letters. 2013 ; Vol. 30, No. 2.