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^*

^*Corresponding author for this work

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
Number of pages	4
Journal	Physical Review. B, Condensed matter and materials physics
Volume	80
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.80.052508
Publication status	Published - Aug 2009

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

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10.1103/PhysRevB.80.052508

Field Induced Quantum Order EP/E064264/1: Copt in Field Induced Quantum Ordering
Lee, S. (PI)
EPSRC
1/10/07 → 31/03/11
Project: Standard

Cite this

@article{f1b662cb6dd4482dbfd3184355b3f111,

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",

journal = "Physical Review. B, Condensed matter and materials physics",

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

U2 - 10.1103/PhysRevB.80.052508

DO - 10.1103/PhysRevB.80.052508

M3 - Article

SN - 1098-0121

VL - 80

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 5

M1 - 052508

ER -

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

Abstract

Keywords

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Projects

Field Induced Quantum Order EP/E064264/1: Copt in Field Induced Quantum Ordering

Cite this