Suppression of the superconducting transition of RFeAsO1-xFx (R=Tb, Dy, and Ho)

Jennifer A. Rodgers; George B. S. Penny; Andrea Marcinkova; Jan-Willem G. Bos; Dmitry A. Sokolov; Anna Kusmartseva; Andrew D. Huxley; J. Paul Attfield

doi:10.1103/PhysRevB.80.052508

Suppression of the superconducting transition of RFeAsO1-xFx (R=Tb, Dy, and Ho)

Jennifer A. Rodgers, George B. S. Penny, Andrea Marcinkova, Jan-Willem G. Bos, Dmitry A. Sokolov, Anna Kusmartseva, Andrew D. Huxley, J. Paul Attfield

Research output: Contribution to journal › Article › peer-review

Abstract

A suppression of superconductivity in the late rare-earth RFeAsO1-xFx materials is reported. The maximum critical temperature (T-c) decreases from 51 K for R=Tb to 36 K for HoFeAsO0.9F0.1, which has been synthesized under 10 GPa pressure. This suppression is driven by a decrease in the Fe-As-Fe angle below an optimum value of 110.6 degrees, as the angle decreases linearly with unit-cell volume (V) across the RFeAsO1-xFx series. A crossover in electronic structure around this optimum geometry is evidenced by a change in sign of the compositional dT(c)/dV, from negative values for previously reported large R materials to positive for HoFeAsO0.9F0.1.

Original language	English
Article number	052508
Pages (from-to)	-
Number of pages	4
Journal	Physical review B
Volume	80
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.80.052508
Publication status	Published - Aug 2009

Keywords / Materials (for Non-textual outputs)

dysprosium compounds
electronic structure
Fermi level
high-pressure effects
holmium compounds
iron compounds
stoichiometry
superconducting transition temperature
superconducting transitions
terbium compounds
LAYERED QUATERNARY COMPOUND
43 K

Access to Document

10.1103/PhysRevB.80.052508

PDF available here
Copyright © 2009 The American Physical Society.This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Physical Society.
Final published version, 560 KB

http://prb.aps.org/abstract/PRB/v80/i5/e052508

Cite this

@article{d757c263c74747279c5389ffd714e913,

title = "Suppression of the superconducting transition of RFeAsO1-xFx (R=Tb, Dy, and Ho)",

abstract = "A suppression of superconductivity in the late rare-earth RFeAsO1-xFx materials is reported. The maximum critical temperature (T-c) decreases from 51 K for R=Tb to 36 K for HoFeAsO0.9F0.1, which has been synthesized under 10 GPa pressure. This suppression is driven by a decrease in the Fe-As-Fe angle below an optimum value of 110.6 degrees, as the angle decreases linearly with unit-cell volume (V) across the RFeAsO1-xFx series. A crossover in electronic structure around this optimum geometry is evidenced by a change in sign of the compositional dT(c)/dV, from negative values for previously reported large R materials to positive for HoFeAsO0.9F0.1.",

keywords = "dysprosium compounds, electronic structure, Fermi level, high-pressure effects, holmium compounds, iron compounds, stoichiometry, superconducting transition temperature, superconducting transitions, terbium compounds, LAYERED QUATERNARY COMPOUND, 43 K",

author = "Rodgers, {Jennifer A.} and Penny, {George B. S.} and Andrea Marcinkova and Bos, {Jan-Willem G.} and Sokolov, {Dmitry A.} and Anna Kusmartseva and Huxley, {Andrew D.} and Attfield, {J. Paul}",

year = "2009",

month = aug,

doi = "10.1103/PhysRevB.80.052508",

language = "English",

volume = "80",

pages = "--",

journal = "Physical review B",

issn = "1098-0121",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Suppression of the superconducting transition of RFeAsO1-xFx (R=Tb, Dy, and Ho)

AU - Rodgers, Jennifer A.

AU - Penny, George B. S.

AU - Marcinkova, Andrea

AU - Bos, Jan-Willem G.

AU - Sokolov, Dmitry A.

AU - Kusmartseva, Anna

AU - Huxley, Andrew D.

AU - Attfield, J. Paul

PY - 2009/8

Y1 - 2009/8

N2 - A suppression of superconductivity in the late rare-earth RFeAsO1-xFx materials is reported. The maximum critical temperature (T-c) decreases from 51 K for R=Tb to 36 K for HoFeAsO0.9F0.1, which has been synthesized under 10 GPa pressure. This suppression is driven by a decrease in the Fe-As-Fe angle below an optimum value of 110.6 degrees, as the angle decreases linearly with unit-cell volume (V) across the RFeAsO1-xFx series. A crossover in electronic structure around this optimum geometry is evidenced by a change in sign of the compositional dT(c)/dV, from negative values for previously reported large R materials to positive for HoFeAsO0.9F0.1.

AB - A suppression of superconductivity in the late rare-earth RFeAsO1-xFx materials is reported. The maximum critical temperature (T-c) decreases from 51 K for R=Tb to 36 K for HoFeAsO0.9F0.1, which has been synthesized under 10 GPa pressure. This suppression is driven by a decrease in the Fe-As-Fe angle below an optimum value of 110.6 degrees, as the angle decreases linearly with unit-cell volume (V) across the RFeAsO1-xFx series. A crossover in electronic structure around this optimum geometry is evidenced by a change in sign of the compositional dT(c)/dV, from negative values for previously reported large R materials to positive for HoFeAsO0.9F0.1.

KW - dysprosium compounds

KW - electronic structure

KW - Fermi level

KW - high-pressure effects

KW - holmium compounds

KW - iron compounds

KW - stoichiometry

KW - superconducting transition temperature

KW - superconducting transitions

KW - terbium compounds

KW - LAYERED QUATERNARY COMPOUND

KW - 43 K

UR - http://www.scopus.com/inward/record.url?scp=70249132144&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.80.052508

DO - 10.1103/PhysRevB.80.052508

M3 - Article

SN - 1098-0121

VL - 80

SP - -

JO - Physical review B

JF - Physical review B

IS - 5

M1 - 052508

ER -

Suppression of the superconducting transition of RFeAsO1-xFx (R=Tb, Dy, and Ho)

Abstract

Keywords / Materials (for Non-textual outputs)

Access to Document

Other files and links

Fingerprint

High Pressure Studies of Charge Ordered Materials

Cite this

Suppression of the superconducting transition of RFeAsO1-xFx (R=Tb, Dy, and Ho)

Abstract

Keywords / Materials (for Non-textual outputs)

Access to Document

Other files and links

Fingerprint

Projects

High Pressure Studies of Charge Ordered Materials

Cite this