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Crommie, Michael F.; Liu, Amy; Zettl, A.; Cohen, Marvin L.; Parilla, Philip A.; Hundley, M. F.; Creager, W.N.; Hoen, S.; Sherwin, Mark S.

doi:10.1103/physrevb.39.4231

Cited by 55 publications

(12 citation statements)

References 15 publications

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“…Indeed, we cannot conclude that the application of strain by hydrostatic pressure always yields the most suitable structural manipulation for obtaining the highest T c of the targeted material. The importance of the uniaxial strain for manipulating T c has recently been recognized [7], for example, in YBa 2 Cu 3 O 7 (Y-123) [9][10][11][12][13], YBa 2 Cu 4 O 8 (Y-124) [13][14][15][16][17], and HgBa 2 CuO 4 [18]. Selective structural manipulation by uniaxial strain yields physical information regarding the optimal type of strain for optimizing T c .…”

Section: Introductionmentioning

confidence: 99%

Uniaxial strain effects on the superconducting transition in Re-doped Hg-1223 cuprate superconductors

et al. 2017

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The effects of uniaxial strain and hydrostatic pressure on Hg 0.83 Re 0.18 Ba 2 Ca 2.4 Cu 3.6 O 14 [Hg 0.83 (Re 0.18)-1223] were investigated by AC magnetic measurements under stress corresponding to a pressure of 20 GPa at maximum. According to a previous thermal study based on the Ehrenfest relation, in-plane contraction should increase the superconducting transition temperature (T c), whereas out-of-plane contraction should decrease T c. This suggests that the increase in T c under hydrostatic-pressure contraction must be smaller than that under in-plane contraction. However, the present uniaxial-strain experiments revealed enhancement of T c under both in-plane and out-of-plane contraction, and the largest enhancement was observed under hydrostatic-pressure contraction. According to a band calculation, all contraction styles induce hole doping from the HgO blocks to the CuO 2 blocks, and hydrostatic-pressure contraction yields the largest hole doping among three contractions. This behavior explains well a series of changes in T c in the stress region of below 8 GPa. More specifically, under hydrostatic-pressure contraction, T c exhibited an increase, a decrease, and another increase with increasing pressure, and this multistep change is similar to that observed in Bi-2223-type cuprate superconductors, suggesting that it is necessary to distinguish the effect of strain on the middle CuO 2 plane in the three-CuO 2-plane package from that on the outer planes.

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Section: Introductionmentioning

confidence: 99%

Uniaxial strain effects on the superconducting transition in Re-doped Hg-1223 cuprate superconductors

et al. 2017

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“…[15][16][17] The US-type experiment is technologically more difficult and require high-quality single crystals of sufficient size. The US-type approach has been limited to only combined thermal expansion and specific heat measurements using the Ehrenfest relation dT…”

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confidence: 99%

Uniaxial Strain Effects on Cuprate Superconductor YBa₂Cu₄O₈

et al. 2012

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The uniaxial strain effects on the cuprate superconductor YBa 2 Cu 4 O 8 (Y-124) were investigated by magnetic measurements and quantitatively compared with those of hydrostatic contraction up to 1.7 GPa. We observed a change in superconducting transition temperature (T c ) for three situations: out-of-plane (along the c-axis), in-plane (along the c-plane), and hydrostatic contractions. The in-plane contraction caused a larger increase in T c than the out-of-plane contraction. The dT c =dP for hydrostatic contraction was almost consistent with that for the out-of-plane contraction. The magnitude correlation in the pressure derivative of T c is explained by considering a qualitative change in Madelung site potential with a function of Cu-O apical distance. Contrary to the general trend for cuprates, T c increased against the contraction along all the crystal axes, suggesting that carrier doping from CuO chain layers to CuO 2 planes occurred for all contraction types. This is a unique characteristic of YBa 2 Cu 4 O 8 , which has double CuO chain layers that function as an important charge reservoir between CuO 2 planes.

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“…Using X-ray-diffraction, Aleksandrov and coworkers [173] [243,244]. The dTc/dcrij values disagree even more [110,183,[245][246][247]. Therefore, an estimate of dTJdP based on theory might reduce the uncertainty in dTcjdP.…”

Section: Monocrystal Srtioamentioning

confidence: 99%

Oxides and oxide superconductors :

Lei¹,

Ledbetter²

1991

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c-axis stress dependence of normal and superconducting state properties ofYBa2Cu3

Cited by 55 publications

References 15 publications

Uniaxial strain effects on the superconducting transition in Re-doped Hg-1223 cuprate superconductors

Uniaxial strain effects on the superconducting transition in Re-doped Hg-1223 cuprate superconductors

Uniaxial Strain Effects on Cuprate Superconductor YBa₂Cu₄O₈

Oxides and oxide superconductors :

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c-axis stress dependence of normal and superconducting state properties ofYBa2Cu3

Cited by 55 publications

References 15 publications

Uniaxial strain effects on the superconducting transition in Re-doped Hg-1223 cuprate superconductors

Uniaxial strain effects on the superconducting transition in Re-doped Hg-1223 cuprate superconductors

Uniaxial Strain Effects on Cuprate Superconductor YBa2Cu4O8

Oxides and oxide superconductors :

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Uniaxial Strain Effects on Cuprate Superconductor YBa₂Cu₄O₈