Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in 
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Tam, David W.; Song, Yu; Man, Haoran; Cheung, Sky C.; Yin, Zhiping; Lu, Xingye; Wang, Weiyi; Frandsen, Benjamin A.; Liu, Lian; Gong, Zizhou; Ito, Takashi U.; Cai, Yipeng; Wilson, M. N.; Guo, Shengli; Koshiishi, K.; Wang, Tian; Hitti, B.; Ivanov, A.; Zhao, Yang; Lynn, J. W.; Luke, G. M.; Berlijn, Tom; Maier, Thomas; Uemura, Y. J.; Dai, Pengcheng

doi:10.1103/physrevb.95.060505

Cited by 29 publications

(26 citation statements)

References 45 publications

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“…With slightly reduced z As/P , expanding the in-plane Fe-Fe spacing by 1% barely increases the Fe ordered magnetic moment, in strong contrast to the results at z As/P = 0.348. Therefore, the z As/P = 0.348 is a critical (As,P) height where the Fe ordered magnetic moment is very sensitive to the in-plane Fe-Fe distance, similar to a previous observation that the Fe ordered magnetic moment shows a large enhancement under in-plane uniaxial pressure near a optimal superconductivity in BaFe 2−x T x As 2 (T =Co,Ni) [52].…”

Section: Dft+dmft Calculationsupporting

confidence: 88%

“…Figure 1(f) shows pressure dependence of the resistivity near T c . With increasing pressure from 0 to 480 MPa using a custom designed uniaxial pressure device [52], we see a systematic reduction in T c from 29.5 K to 28.5 K. Figure 2 summarizes temperature dependence of the resistivity as a function of increasing pressure. At zero pressure, we find linear temperature dependence of the resistivity above T c and below 90 K, confirming previous work [10].…”

Section: Resistivity Measurementsmentioning

confidence: 98%

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c-axis pressure-induced antiferromagnetic order in optimally P-doped BaFe2(As0.70P0.30)2 superconductor

Wang

Zhang

et al. 2018

npj Quant Mater

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Superconductivity in BaFe 2 (As 1−x P x ) 2 iron pnictides emerges when its in-plane two-dimensional (2D) orthorhombic lattice distortion associated with nematic phase at T s and three-dimensional (3D) collinear antiferromagnetic (AF) order at T N (T s = T N ) are gradually suppressed with increasing x, reaching optimal superconductivity around x = 0.30 with T c ≈ 30 K. Here we show that a moderate uniaxial pressure along the c-axis in BaFe 2 (As 0.70 P 0.30 ) 2 spontaneously induces a 3D collinear AF order with T N = T s > 30 K, while only slightly suppresses T c . Although a ∼400 MPa pressure compresses the c-axis lattice while expanding the in-plane lattice and increasing the nearest-neighbor Fe-Fe distance, it barely changes the average iron-pnictogen height in BaFe 2 (As 0.70 P 0.30 ) 2 . Therefore, the pressureinduced AF order must arise from a strong in-plane magnetoelastic coupling, suggesting that the 2D nematic phase is a competing state with superconductivity. arXiv:1808.05153v1 [cond-mat.supr-con]

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Section: Dft+dmft Calculationsupporting

confidence: 88%

Section: Resistivity Measurementsmentioning

confidence: 98%

c-axis pressure-induced antiferromagnetic order in optimally P-doped BaFe2(As0.70P0.30)2 superconductor

Wang

Zhang

et al. 2018

npj Quant Mater

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“…The aforementioned orders are found in close proximity with each other. AFM and SC orders homogeneously coexist in several Fe-HTS, such as in BaFe 2−x Co x As 2 [10,11], BaFe 2−x Ni x As 2 [12] and Ba 1−x K x Fe 2 As 2 [13]. In these systems, the ordered magnetic moment size and nematic order parameter smoothly decrease as the temperature is lowered below T C , corroborating the fact that superconductivity and magnetic long range order compete for the same electrons [14].…”

Section: Introductionmentioning

confidence: 99%

Disentangling superconducting and magnetic orders in NaFe1−xNixAs using muon spin rotation

Cheung¹,

Guguchia²,

Frandsen³

et al. 2018

Phys. Rev. B

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antiferromagnetic (AFM) order [1][2][3]. One of the grand challenges in understanding the behavior of these systems is determining the physical mechanism responsible for superconductivity. Essential information on the nature of superconductivity in strongly correlated electron systems can be deduced by investigating their phase diagrams as well as the superconducting (SC) gap structure.In the parent compound of many Fe-HTS, a spin density wave forms with spins ordered antiparallel to each arXiv:1802.04458v1 [cond-mat.supr-con]

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“…The experimental setup for IN22 has been described in detail before [34][35][36][37][38][39] , while polarized neutrons were controlled and analyzed using a polarized 3 He filter on BT-7 40,41 . We have also carried out unpolarized neutron diffraction experiments on BT-7 using an in-situ uniaxial pressure device 25 . The wave vector transfer Q in reciprocal space in Å −1 is defined as Q = Ha * + Kb * + Lc * , with a Ã ¼ ð2π=aÞâ, b Ã ¼ ð2π=bÞb, and c Ã ¼ ð2π=cÞĉ, where a ≈ b ≈ 5.6 Å, c = 12.96 Å, and H, K, L are Miller indices.…”

Section: Resultsmentioning

confidence: 99%

“…Although uniaxial pressure necessary to detwin single crystals of BaFe 2 As 2 is known to increase T N (Fig. 1b) [22][23][24][25] and create in-plane resistivity anisotropy above T s 14 , it is generally assumed that it only induces a small strain on the sample and does not significantly modify the electronic and magnetic properties of the system [10][11][12][13][14][15][16][17][18][19]21 . Recently, nuclear magnetic resonance (NMR) experiments have revealed that an in-plane uniaxial strain on BaFe 2 As 2 induces an enhancement of the low-energy spin fluctuations along the c-axis in the paramagnetic state above T N 26 .…”

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confidence: 99%

In-plane uniaxial pressure-induced out-of-plane antiferromagnetic moment and critical fluctuations in BaFe2As2

Klemm

Tian

et al. 2020

Nat Commun

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A small in-plane external uniaxial pressure has been widely used as an effective method to acquire single domain iron pnictide BaFe2As2, which exhibits twin-domains without uniaxial strain below the tetragonal-to-orthorhombic structural (nematic) transition temperature Ts. Although it is generally assumed that such a pressure will not affect the intrinsic electronic/magnetic properties of the system, it is known to enhance the antiferromagnetic (AF) ordering temperature TN ( < Ts) and create in-plane resistivity anisotropy above Ts. Here we use neutron polarization analysis to show that such a strain on BaFe2As2 also induces a static or quasi-static out-of-plane (c-axis) AF order and its associated critical spin fluctuations near TN/Ts. Therefore, uniaxial pressure necessary to detwin single crystals of BaFe2As2 actually rotates the easy axis of the collinear AF order near TN/Ts, and such effects due to spin-orbit coupling must be taken into account to unveil the intrinsic electronic/magnetic properties of the system.

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Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFe2−xTxAs2 ( T=

Cited by 29 publications

References 45 publications

c-axis pressure-induced antiferromagnetic order in optimally P-doped BaFe2(As0.70P0.30)2 superconductor

c-axis pressure-induced antiferromagnetic order in optimally P-doped BaFe2(As0.70P0.30)2 superconductor

Disentangling superconducting and magnetic orders in NaFe1−xNixAs using muon spin rotation

In-plane uniaxial pressure-induced out-of-plane antiferromagnetic moment and critical fluctuations in BaFe2As2

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