Ferromagnetism in CuFeSb: Evidence of competing magnetic interactions in iron-based superconductors

B. Qian, J. Lee, J. Hu, G. C. Wang, P. Kumar, M. H. Fang, T. J. Liu, D. Fobes, H. Pham, L. Spinu, X. S. Wu, M. Green, S. H. Lee, Z. Q. Mao

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We have synthesized a new layered iron-pnictide CuFeSb. This material shares a similar layered tetragonal structure with iron-based superconductors, with Fe square planar sheets forming from the edge-sharing iron antimony tetrahedral network. CuFeSb differs remarkably from Fe-based superconductors in the height of anion Z anion from the Fe plane; Z Sb for CuFeSb is ∼1.84 Å, much larger than Z As (1.31-1.51 Å) in FeAs compounds and Z Te (∼1.77 Å) in Fe 1+yTe. In contrast with the metallic antiferromagnetic (AFM) or superconducting state of iron pnictides and chalcogenides under current studies, CuFeSb exhibits a metallic, ferromagnetic (FM) state with T c=375 K. This finding suggests that the competition between AFM and FM coupling may exist in Fe-based superconductors and that the nature of magnetic coupling within the Fe plane is indeed dependent on the height of anion as predicted in theories.

Original languageEnglish (US)
Article number144427
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number14
DOIs
StatePublished - Apr 26 2012

Fingerprint

Ferromagnetism
ferromagnetism
Anions
Negative ions
Iron
iron
Group 5A compounds
anions
Antimony
Chalcogenides
Magnetic couplings
interactions
chalcogenides
antimony
Iron-based Superconductors

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Qian, B. ; Lee, J. ; Hu, J. ; Wang, G. C. ; Kumar, P. ; Fang, M. H. ; Liu, T. J. ; Fobes, D. ; Pham, H. ; Spinu, L. ; Wu, X. S. ; Green, M. ; Lee, S. H. ; Mao, Z. Q. / Ferromagnetism in CuFeSb : Evidence of competing magnetic interactions in iron-based superconductors. In: Physical Review B - Condensed Matter and Materials Physics. 2012 ; Vol. 85, No. 14.
@article{ff66701be6584bf6949267b4fa9302d0,
title = "Ferromagnetism in CuFeSb: Evidence of competing magnetic interactions in iron-based superconductors",
abstract = "We have synthesized a new layered iron-pnictide CuFeSb. This material shares a similar layered tetragonal structure with iron-based superconductors, with Fe square planar sheets forming from the edge-sharing iron antimony tetrahedral network. CuFeSb differs remarkably from Fe-based superconductors in the height of anion Z anion from the Fe plane; Z Sb for CuFeSb is ∼1.84 {\AA}, much larger than Z As (1.31-1.51 {\AA}) in FeAs compounds and Z Te (∼1.77 {\AA}) in Fe 1+yTe. In contrast with the metallic antiferromagnetic (AFM) or superconducting state of iron pnictides and chalcogenides under current studies, CuFeSb exhibits a metallic, ferromagnetic (FM) state with T c=375 K. This finding suggests that the competition between AFM and FM coupling may exist in Fe-based superconductors and that the nature of magnetic coupling within the Fe plane is indeed dependent on the height of anion as predicted in theories.",
author = "B. Qian and J. Lee and J. Hu and Wang, {G. C.} and P. Kumar and Fang, {M. H.} and Liu, {T. J.} and D. Fobes and H. Pham and L. Spinu and Wu, {X. S.} and M. Green and Lee, {S. H.} and Mao, {Z. Q.}",
year = "2012",
month = "4",
day = "26",
doi = "10.1103/PhysRevB.85.144427",
language = "English (US)",
volume = "85",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "14",

}

Qian, B, Lee, J, Hu, J, Wang, GC, Kumar, P, Fang, MH, Liu, TJ, Fobes, D, Pham, H, Spinu, L, Wu, XS, Green, M, Lee, SH & Mao, ZQ 2012, 'Ferromagnetism in CuFeSb: Evidence of competing magnetic interactions in iron-based superconductors', Physical Review B - Condensed Matter and Materials Physics, vol. 85, no. 14, 144427. https://doi.org/10.1103/PhysRevB.85.144427

Ferromagnetism in CuFeSb : Evidence of competing magnetic interactions in iron-based superconductors. / Qian, B.; Lee, J.; Hu, J.; Wang, G. C.; Kumar, P.; Fang, M. H.; Liu, T. J.; Fobes, D.; Pham, H.; Spinu, L.; Wu, X. S.; Green, M.; Lee, S. H.; Mao, Z. Q.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 85, No. 14, 144427, 26.04.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ferromagnetism in CuFeSb

T2 - Evidence of competing magnetic interactions in iron-based superconductors

AU - Qian, B.

AU - Lee, J.

AU - Hu, J.

AU - Wang, G. C.

AU - Kumar, P.

AU - Fang, M. H.

AU - Liu, T. J.

AU - Fobes, D.

AU - Pham, H.

AU - Spinu, L.

AU - Wu, X. S.

AU - Green, M.

AU - Lee, S. H.

AU - Mao, Z. Q.

PY - 2012/4/26

Y1 - 2012/4/26

N2 - We have synthesized a new layered iron-pnictide CuFeSb. This material shares a similar layered tetragonal structure with iron-based superconductors, with Fe square planar sheets forming from the edge-sharing iron antimony tetrahedral network. CuFeSb differs remarkably from Fe-based superconductors in the height of anion Z anion from the Fe plane; Z Sb for CuFeSb is ∼1.84 Å, much larger than Z As (1.31-1.51 Å) in FeAs compounds and Z Te (∼1.77 Å) in Fe 1+yTe. In contrast with the metallic antiferromagnetic (AFM) or superconducting state of iron pnictides and chalcogenides under current studies, CuFeSb exhibits a metallic, ferromagnetic (FM) state with T c=375 K. This finding suggests that the competition between AFM and FM coupling may exist in Fe-based superconductors and that the nature of magnetic coupling within the Fe plane is indeed dependent on the height of anion as predicted in theories.

AB - We have synthesized a new layered iron-pnictide CuFeSb. This material shares a similar layered tetragonal structure with iron-based superconductors, with Fe square planar sheets forming from the edge-sharing iron antimony tetrahedral network. CuFeSb differs remarkably from Fe-based superconductors in the height of anion Z anion from the Fe plane; Z Sb for CuFeSb is ∼1.84 Å, much larger than Z As (1.31-1.51 Å) in FeAs compounds and Z Te (∼1.77 Å) in Fe 1+yTe. In contrast with the metallic antiferromagnetic (AFM) or superconducting state of iron pnictides and chalcogenides under current studies, CuFeSb exhibits a metallic, ferromagnetic (FM) state with T c=375 K. This finding suggests that the competition between AFM and FM coupling may exist in Fe-based superconductors and that the nature of magnetic coupling within the Fe plane is indeed dependent on the height of anion as predicted in theories.

UR - http://www.scopus.com/inward/record.url?scp=84860485709&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84860485709&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.85.144427

DO - 10.1103/PhysRevB.85.144427

M3 - Article

AN - SCOPUS:84860485709

VL - 85

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 14

M1 - 144427

ER -