Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2-xTxAs2 (T=Co,Ni)

David W. Tam; Yu Song; Haoran Man; Sky C. Cheung; Zhiping Yin; Xingye Lu; Weiyi Wang; Benjamin A. Frandsen; Lian Liu; Zizhou Gong; Takashi U. Ito; Yipeng Cai; Murray N. Wilson; Shengli Guo; Keisuke Koshiishi; Wei Tian; Bassam Hitti; Alexandre Ivanov; Yang Zhao; Jeffrey W. Lynn; Graeme M. Luke; Tom Berlijn; Thomas A. Maier; Yasutomo J. Uemura; Pengcheng Dai

doi:10.1103/PhysRevB.95.060505

Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2-xTxAs2 (T=Co,Ni)

David W. Tam, Yu Song, Haoran Man, Sky C. Cheung, Zhiping Yin, Xingye Lu, Weiyi Wang, Benjamin A. Frandsen, Lian Liu, Zizhou Gong, Takashi U. Ito, Yipeng Cai, Murray N. Wilson, Shengli Guo, Keisuke Koshiishi, Wei Tian, Bassam Hitti, Alexandre Ivanov, Yang Zhao, Jeffrey W. LynnGraeme M. Luke, Tom Berlijn, Thomas A. Maier, Yasutomo J. Uemura, Pengcheng Dai

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Abstract

We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFe2As2 and its Co- and Ni-substituted members near optimal superconductivity. In the low-temperature AF ordered state, uniaxial pressure necessary to detwin the orthorhombic crystals also increases the magnetic ordered moment, reaching an 11% increase under 40 MPa for BaFe1.9Co0.1As2, and a 15% increase for BaFe1.915Ni0.085As2. We also observe an increase of the AF ordering temperature (TN) of about 0.25 K/MPa in all compounds, consistent with density functional theory calculations that reveal better Fermi surface nesting for itinerant electrons under uniaxial pressure. The doping dependence of the magnetic ordered moment is captured by combining dynamical mean field theory with density functional theory, suggesting that the pressure-induced moment increase near optimal superconductivity is closely related to quantum fluctuations and the nearby electronic nematic phase.

Original language	English
Article number	060505
Journal	Physical Review B
Volume	95
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.95.060505
State	Published - Feb 17 2017

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Tam, D. W., Song, Y., Man, H., Cheung, S. C., Yin, Z., Lu, X., Wang, W., Frandsen, B. A., Liu, L., Gong, Z., Ito, T. U., Cai, Y., Wilson, M. N., Guo, S., Koshiishi, K., Tian, W., Hitti, B., Ivanov, A., Zhao, Y., ... Dai, P. (2017). Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2-xTxAs2 (T=Co,Ni). Physical Review B, 95(6), Article 060505. https://doi.org/10.1103/PhysRevB.95.060505

@article{e9a8a6d2d6554a108e463bb9479cf3b3,

title = "Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2-xTxAs2 (T=Co,Ni)",

abstract = "We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFe2As2 and its Co- and Ni-substituted members near optimal superconductivity. In the low-temperature AF ordered state, uniaxial pressure necessary to detwin the orthorhombic crystals also increases the magnetic ordered moment, reaching an 11% increase under 40 MPa for BaFe1.9Co0.1As2, and a 15% increase for BaFe1.915Ni0.085As2. We also observe an increase of the AF ordering temperature (TN) of about 0.25 K/MPa in all compounds, consistent with density functional theory calculations that reveal better Fermi surface nesting for itinerant electrons under uniaxial pressure. The doping dependence of the magnetic ordered moment is captured by combining dynamical mean field theory with density functional theory, suggesting that the pressure-induced moment increase near optimal superconductivity is closely related to quantum fluctuations and the nearby electronic nematic phase.",

author = "Tam, {David W.} and Yu Song and Haoran Man and Cheung, {Sky C.} and Zhiping Yin and Xingye Lu and Weiyi Wang and Frandsen, {Benjamin A.} and Lian Liu and Zizhou Gong and Ito, {Takashi U.} and Yipeng Cai and Wilson, {Murray N.} and Shengli Guo and Keisuke Koshiishi and Wei Tian and Bassam Hitti and Alexandre Ivanov and Yang Zhao and Lynn, {Jeffrey W.} and Luke, {Graeme M.} and Tom Berlijn and Maier, {Thomas A.} and Uemura, {Yasutomo J.} and Pengcheng Dai",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = feb,

day = "17",

doi = "10.1103/PhysRevB.95.060505",

language = "English",

volume = "95",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "6",

}

Tam, DW, Song, Y, Man, H, Cheung, SC, Yin, Z, Lu, X, Wang, W, Frandsen, BA, Liu, L, Gong, Z, Ito, TU, Cai, Y, Wilson, MN, Guo, S, Koshiishi, K, Tian, W, Hitti, B, Ivanov, A, Zhao, Y, Lynn, JW, Luke, GM, Berlijn, T , Maier, TA, Uemura, YJ & Dai, P 2017, 'Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2-xTxAs2 (T=Co,Ni)', Physical Review B, vol. 95, no. 6, 060505. https://doi.org/10.1103/PhysRevB.95.060505

TY - JOUR

T1 - Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2-xTxAs2 (T=Co,Ni)

AU - Tam, David W.

AU - Song, Yu

AU - Man, Haoran

AU - Cheung, Sky C.

AU - Yin, Zhiping

AU - Lu, Xingye

AU - Wang, Weiyi

AU - Frandsen, Benjamin A.

AU - Liu, Lian

AU - Gong, Zizhou

AU - Ito, Takashi U.

AU - Cai, Yipeng

AU - Wilson, Murray N.

AU - Guo, Shengli

AU - Koshiishi, Keisuke

AU - Tian, Wei

AU - Hitti, Bassam

AU - Ivanov, Alexandre

AU - Zhao, Yang

AU - Lynn, Jeffrey W.

AU - Luke, Graeme M.

AU - Berlijn, Tom

AU - Maier, Thomas A.

AU - Uemura, Yasutomo J.

AU - Dai, Pengcheng

PY - 2017/2/17

Y1 - 2017/2/17

N2 - We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFe2As2 and its Co- and Ni-substituted members near optimal superconductivity. In the low-temperature AF ordered state, uniaxial pressure necessary to detwin the orthorhombic crystals also increases the magnetic ordered moment, reaching an 11% increase under 40 MPa for BaFe1.9Co0.1As2, and a 15% increase for BaFe1.915Ni0.085As2. We also observe an increase of the AF ordering temperature (TN) of about 0.25 K/MPa in all compounds, consistent with density functional theory calculations that reveal better Fermi surface nesting for itinerant electrons under uniaxial pressure. The doping dependence of the magnetic ordered moment is captured by combining dynamical mean field theory with density functional theory, suggesting that the pressure-induced moment increase near optimal superconductivity is closely related to quantum fluctuations and the nearby electronic nematic phase.

AB - We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFe2As2 and its Co- and Ni-substituted members near optimal superconductivity. In the low-temperature AF ordered state, uniaxial pressure necessary to detwin the orthorhombic crystals also increases the magnetic ordered moment, reaching an 11% increase under 40 MPa for BaFe1.9Co0.1As2, and a 15% increase for BaFe1.915Ni0.085As2. We also observe an increase of the AF ordering temperature (TN) of about 0.25 K/MPa in all compounds, consistent with density functional theory calculations that reveal better Fermi surface nesting for itinerant electrons under uniaxial pressure. The doping dependence of the magnetic ordered moment is captured by combining dynamical mean field theory with density functional theory, suggesting that the pressure-induced moment increase near optimal superconductivity is closely related to quantum fluctuations and the nearby electronic nematic phase.

UR - http://www.scopus.com/inward/record.url?scp=85013074854&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.95.060505

DO - 10.1103/PhysRevB.95.060505

M3 - Article

AN - SCOPUS:85013074854

SN - 2469-9950

VL - 95

JO - Physical Review B

JF - Physical Review B

IS - 6

M1 - 060505

ER -

Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2-xTxAs2 (T=Co,Ni)

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