Superconductor-to-nonsuperconductor transition in (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi mathvariant="normal">−</mml:mi><mml:mi mathvariant="normal">x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sr</mml:mi></mml:mrow>

Takagi, H.; Ido, T.; Ishibashi, Shoji; Uota, M.; Uchida, S.; Tokura, Y.

doi:10.1103/physrevb.40.2254

Cited by 778 publications

(280 citation statements)

References 18 publications

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“…Moreover, ρ(1000 K) (∼ ρ sat ) in LSCO changes as 1/x, while for n ∝ x (Ref. [24]) the theory predicts ρ sat ∝ 1/ √ x. The above can be explained by breakdown of the quasiparticle picture due to strong inelastic scattering at high T manifested by disappearing of a Drude peak in σ(ω) (Refs.…”

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confidence: 99%

Saturation of resistivity and Kohler's rule in Ni-dopedLa1.85Sr0.15CuO4cuprate

2017

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We present the results of electrical transport measurements of La1.85Sr0.15Cu1−yNiyO4 thin singlecrystal films at magnetic fields up to 9 T. Adding Ni impurity with strong Coulomb scattering potential to slightly underdoped cuprate makes the signs of resistivity saturation at ρsat visible in the measurement temperature window up to 350 K. Employing the parallel-resistor formalism reveals that ρsat is consistent with classical Ioffe-Regel-Mott limit and changes with carrier concentration n as ρsat ∝ 1/ √ n. Thermopower measurements show that Ni tends to localize mobile carriers, decreasing their effective concentration as n ∼ = 0.15 − y. The classical unmodified Kohler's rule is fulfilled for magnetoresistance in the nonsuperconducting part of the phase diagram when applied to the ideal branch in the parallel-resistor model.

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confidence: 99%

Saturation of resistivity and Kohler's rule in Ni-dopedLa1.85Sr0.15CuO4cuprate

2017

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“…2 While its sister compound La 2−x Sr x CuO 4 , like most other high temperature superconductors, displays a dome shaped SC phase boundary T c (x), 3,4 in the Ba-based compound T c (x) shows a deep depression centered at x = 1/8. 2,5 It was discovered early on that the so-called 1/8-anomaly is accompanied by a structural transition from low-temperature orthorhombic (LTO) to low-temperature tetragonal (LTT) symmetry, 6,7 not observed in pure La 2−x Sr x CuO 4 , and that bulk SC is replaced by some kind of antiferromagnetic (AF) order.…”

Section: Introductionmentioning

confidence: 99%

Stripe order in superconducting La2−xBaxCuO
Hücker
¹
,
Zimmermann
²
,
Gu
³

et al. 2011
Phys. Rev. B
300
43
411
2
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The correlations between stripe order, superconductivity, and crystal structure in La2−x Bax CuO4 single crystals have been studied by means of x-ray and neutron diffraction as well as static magnetization measurements. The derived phase diagram shows that charge stripe order (CO) coexists with bulk superconductivity in a broad range of doping around x = 1/8, although the CO order parameter falls off quickly for x = 1/8. Except for x = 0.155, the onset of CO always coincides with the transition between the orthorhombic and the tetragonal low temperature structures. The CO transition evolves from a sharp drop at low x to a more gradual transition at higher x, eventually falling below the structural phase boundary for optimum doping. With respect to the interlayer CO correlations, we find no qualitative change of the stripe stacking order as a function of doping, and in-plane and out-of-plane correlations disappear simultaneously at the transition. Similarly to the CO, the spin stripe order (SO) is also most pronounced at x = 1/8. Truly static SO sets in below the CO and coincides with the first appearance of in-plane superconducting correlations at temperatures significantly above the bulk transition to superconductivity (SC). Indications that bulk SC causes a reduction of the spin or charge stripe order could not be identified. We argue that CO is the dominant order that is compatible with SC pairing but competes with SC phase coherence. Comparing our results with data from the literature, we find good agreement if all results are plotted as a function of x ′ instead of the nominal x, where x ′ represents an estimate of the actual Ba content, extracted from the doping dependence of the structural transition between the orthorhombic phase and the tetragonal high-temperature phase.

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“…A particular interesting question is the differences and similarities between the hole-and electron-doped sides. The phase diagram of hole-doped high-T c cuprates shows a well-known 'dome' shape with maximal superconductivity at a doping level of about 0.15 [1]. For electron-doped high-T c cuprates, the currently accepted phase diagram is similar to the hole-doped one, except for the much narrower superconducting window [2].…”

Section: Introductionmentioning

confidence: 99%

“…The phase diagram of the hole-doped side [1], e.g. For comparison, films with no reduction were also prepared and named as ''as-grown".…”

Section: Introductionmentioning

confidence: 99%

Generic phase diagram of “electron-doped” T′ cuprates

Matsumoto

Utsuki

Tsukada

et al. 2009

Physica C: Superconductivity

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We investigated the generic phase diagram of the electron doped superconductor, Nd 2-x Ce x CuO 4 , using films prepared by metal organic decomposition.After careful oxygen reduction treatment to remove interstitial O ap atoms, we found that the T c increases monotonically from 24 K to 29 K with decreasing x from 0.15 to 0.00, demonstrating a quite different phase diagram from the previous bulk one. The implication of our results is discussed on the basis of tremendous influence of O ap "impurities" on superconductivity and also magnetism in T' cuprates. Then we conclude that our result represents the generic phase diagram for oxygen-stoichiometric Nd 2-x Ce x CuO 4 .

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Superconductor-to-nonsuperconductor transition in (La1−xSr

Cited by 778 publications

References 18 publications

Saturation of resistivity and Kohler's rule in Ni-dopedLa1.85Sr0.15CuO4cuprate

Saturation of resistivity and Kohler's rule in Ni-dopedLa1.85Sr0.15CuO4cuprate

Stripe order in superconducting La2−xBaxCuO
Hücker
¹
,
Zimmermann
²
,
Gu
³

et al. 2011
Phys. Rev. B
300
43
411
2
View full text Add to dashboard Cite

Generic phase diagram of “electron-doped” T′ cuprates

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Superconductor-to-nonsuperconductor transition in (La1−xSr

Cited by 778 publications

References 18 publications

Saturation of resistivity and Kohler's rule in Ni-dopedLa1.85Sr0.15CuO4cuprate

Saturation of resistivity and Kohler's rule in Ni-dopedLa1.85Sr0.15CuO4cuprate

Stripe order in superconducting La2−xBaxCuOHücker1, Zimmermann2, Gu3 et al. 2011Phys. Rev. B300434112View full textAdd to dashboardCite

Generic phase diagram of “electron-doped” T′ cuprates

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About

Stripe order in superconducting La2−xBaxCuO
Hücker
¹
,
Zimmermann
²
,
Gu
³

et al. 2011
Phys. Rev. B
300
43
411
2
View full text Add to dashboard Cite