Ultrafast pump-probe study of phase separation and competing orders in the underdoped (Ba,K)Fe2As2 superconductor

Elbert E.M. Chia; D. Talbayev; Jian Xin Zhu; H. Q. Yuan; T. Park; J. D. Thompson; C. Panagopoulos; G. F. Chen; J. L. Luo; N. L. Wang; A. J. Taylor

doi:10.1103/PhysRevLett.104.027003

Ultrafast pump-probe study of phase separation and competing orders in the underdoped (Ba,K)Fe2As2 superconductor

Elbert E.M. Chia
, D. Talbayev
, Jian Xin Zhu
, H. Q. Yuan
, T. Park
, J. D. Thompson
, C. Panagopoulos
, G. F. Chen
, J. L. Luo
, N. L. Wang
, A. J. Taylor

Department of Physics

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

112 Scopus citations

Abstract

We report measurements of quasiparticle relaxation dynamics in the high-temperature superconductor (Ba,K)Fe2As2 in optimally doped, underdoped, and undoped regimes. In the underdoped sample, spin-density wave (SDW) order forms at ∼85K, followed by superconductivity at ∼28K. We find the emergence of a normal-state order that suppresses SDW at a temperature T*∼60K and argue that this normal-state order is a precursor to superconductivity.

Original language	English
Article number	027003
Journal	Physical Review Letters
Volume	104
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.104.027003
State	Published - 13 Jan 2010

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Chia, E. E. M., Talbayev, D., Zhu, J. X., Yuan, H. Q., Park, T., Thompson, J. D., Panagopoulos, C., Chen, G. F., Luo, J. L., Wang, N. L., & Taylor, A. J. (2010). Ultrafast pump-probe study of phase separation and competing orders in the underdoped (Ba,K)Fe2As2 superconductor. Physical Review Letters, 104(2), Article 027003. https://doi.org/10.1103/PhysRevLett.104.027003

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title = "Ultrafast pump-probe study of phase separation and competing orders in the underdoped (Ba,K)Fe2As2 superconductor",

abstract = "We report measurements of quasiparticle relaxation dynamics in the high-temperature superconductor (Ba,K)Fe2As2 in optimally doped, underdoped, and undoped regimes. In the underdoped sample, spin-density wave (SDW) order forms at ∼85K, followed by superconductivity at ∼28K. We find the emergence of a normal-state order that suppresses SDW at a temperature T*∼60K and argue that this normal-state order is a precursor to superconductivity.",

author = "Chia, \{Elbert E.M.\} and D. Talbayev and Zhu, \{Jian Xin\} and Yuan, \{H. Q.\} and T. Park and Thompson, \{J. D.\} and C. Panagopoulos and Chen, \{G. F.\} and Luo, \{J. L.\} and Wang, \{N. L.\} and Taylor, \{A. J.\}",

year = "2010",

month = jan,

day = "13",

doi = "10.1103/PhysRevLett.104.027003",

language = "English",

volume = "104",

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T1 - Ultrafast pump-probe study of phase separation and competing orders in the underdoped (Ba,K)Fe2As2 superconductor

AU - Chia, Elbert E.M.

AU - Talbayev, D.

AU - Zhu, Jian Xin

AU - Yuan, H. Q.

AU - Park, T.

AU - Thompson, J. D.

AU - Panagopoulos, C.

AU - Chen, G. F.

AU - Luo, J. L.

AU - Wang, N. L.

AU - Taylor, A. J.

PY - 2010/1/13

Y1 - 2010/1/13

N2 - We report measurements of quasiparticle relaxation dynamics in the high-temperature superconductor (Ba,K)Fe2As2 in optimally doped, underdoped, and undoped regimes. In the underdoped sample, spin-density wave (SDW) order forms at ∼85K, followed by superconductivity at ∼28K. We find the emergence of a normal-state order that suppresses SDW at a temperature T*∼60K and argue that this normal-state order is a precursor to superconductivity.

AB - We report measurements of quasiparticle relaxation dynamics in the high-temperature superconductor (Ba,K)Fe2As2 in optimally doped, underdoped, and undoped regimes. In the underdoped sample, spin-density wave (SDW) order forms at ∼85K, followed by superconductivity at ∼28K. We find the emergence of a normal-state order that suppresses SDW at a temperature T*∼60K and argue that this normal-state order is a precursor to superconductivity.

UR - https://www.scopus.com/pages/publications/74549132665

U2 - 10.1103/PhysRevLett.104.027003

DO - 10.1103/PhysRevLett.104.027003

M3 - Article

AN - SCOPUS:74549132665

SN - 0031-9007

VL - 104

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 027003

ER -

Ultrafast pump-probe study of phase separation and competing orders in the underdoped (Ba,K)Fe2As2 superconductor

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