Pressure-Induced Dimensional Crossover and Superconductivity in the Hole-Doped Two-Leg Ladder Compound Sr14-xCaxCu24O41

Nagata, Takashi; Uehara, M.; Goto, Junya; Akimitsu, Jun; Motoyama, N.; Eisaki, H.; Uchida, Satoshi; Takahashi, Hiroki; Nakanishi, Takeshi; Môri, N.

doi:10.1103/physrevlett.81.1090

Cited by 181 publications

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References 14 publications

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“…Such a scenario has been proposed to explain the pressure dependence of the resistivity of the two-leg ladder compound Sr 1−x Ca x Cu 24 O 41 . 15 The pressure dependence of the critical temperature T S shown in Fig. 6 is given by T S Ϸ͉P − P C ͉ y which also describes the variation of the conductivity gap.…”

Section: Discussionmentioning

confidence: 99%

Transport properties of the transverse charge-density-wave systemFe3O2BO3

et al. 2005

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We study the transport properties of the charge-density-wave system Fe 3 O 2 BO 3 . ac conductivity measurements for different frequencies are presented for temperatures above and below the structural transition. dc conductivity, as a function of temperature and pressure, yields the variation of the transition temperature with external pressure. Below this transition the conductivity is thermally activated in a wide range of temperature and the gap obtained is strongly pressure dependent. The ac conductivity at sufficiently low temperatures below the transition is ascribed to the excitation of local defects associated with domain walls and which are characteristic of the one-dimensional nature of the Fe 3 O 2 BO 3 system.

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Section: Discussionmentioning

confidence: 99%

Transport properties of the transverse charge-density-wave systemFe3O2BO3

et al. 2005

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“…Note that magnetic structures obtained by our study are realized in the realistic ratio J H /U = 0. 25 [42][43][44] . This compound has Cu 2 O 3 combined two-leg-ladder structure, and is insulator.…”

Section: 25+mentioning

confidence: 99%

Temperature and composition phase diagram in the iron-based ladder compoundsBa1−xCsxFe2Se3

et al. 2015

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We investigated the iron-based ladder compounds (Ba,Cs)Fe2Se3. Their parent compounds, BaFe2Se3 and CsFe2Se3, have different space groups, formal valences of Fe and magnetic structures. Electrical resistivity, specific heat, magnetic susceptibility, X-ray diffraction and powder neutron diffraction measurements were conducted to obtain temperature and composition phase diagram of this system. Block magnetism observed in BaFe2Se3 is drastically suppressed with Cs doping. In contrast, stripe magnetism observed in CsFe2Se3 is not so fragile against Ba doping. New type of magnetic structure appears in intermediate compositions, which is similar to stripe magnetism of CsFe2Se3, but inter-ladder spin configuration is different. Intermediate compounds show insulating behavior, nevertheless finite T -linear contribution in specific heat was obtained at low temperatures.

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“…However, the change in x=11 is still small and far from a two-dimensional electronic structure. The transport properties in the ladder direction of x=11 show metallic behavior (dρ/dT >0) 8 and a Drude peak in the optical conductivity 3 at high temperatures. However, the electrical resistivity shows localization behavior at low temperatures and the Drude peak has a suppression in the low energy (∼ 10meV) region.…”

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confidence: 99%

Underlying Fermi surface ofSr14−xCaxCu24O41
Yoshida
¹
,
Zhou
²
,
Hussain
³

et al. 2009
Phys. Rev. B
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We have performed an angle-resolved photoemission study of the two-leg ladder system Sr14−xCaxCu24O41 with x= 0 and 11. "Underlying Fermi surfaces" determined from low energy spectral weight mapping indicates the quasi-one dimensional nature of the electronic structure. Energy gap caused by the charge density wave has been observed for x=0 and the gap tends to close with Ca substitution. The absence of a quasi-particle peak even in x=11 is in contrast to the twodimensional high-Tc cuprates, implying strong carrier localization related to the hole crystalization.PACS numbers: 74.25.Jb, 71.18.+y, 74.72.Dn, Since the discovery of the high-T c superconductor in layered cuprates, one-dimensional (1D) cuprates have also attracted much interest 1 . Particularly, Cu-O ladders with an even number of coupled Cu-O chains are predicted to have a finite spin gap reminiscent of that in the underdoped high-T c cuprates, and have the possibility of superconductivity with hole doping 2 . Ladder compounds such as Sr 14−x Ca x Cu 24 O 41 (Sr14-24-41) and LaCuO 2.5 in which two-dimensional CuO 2 planes is reorganized into 1D segments have long been envisioned to bridge 1D chain systems, where Luttinger liquid behaviors are predicted, and 2D plane systems, which is the stage of the high-T c superconductivity. Sr14-24-41 is composed of alternating stacks of the plane of edge sharing CuO 2 chains, (Sr, Ca) layer, and the plane including two-leg Cu 2 O 3 ladders. With Ca substitution, holes are transferred from the chain sites to the ladder sites 3 . From the optical reflectivity measurement of Sr14-24-41 at room temperature, the number of holes doped into the Cu 2 O 3 ladder plane is already 0.07/Cu atom for x=0, which should be enough to realize superconductivity (SC) in 2D cuprate 3 . However, the x=0 samples are insulating and show an activated behavior in the resistivity 4 . Upon Ca substitution for Sr, holes localized in the chains are transferred to the ladders and induce mobile carriers on the ladder. When x > 11, the mobile carriers exhibit superconductivity under high pressure 5 . To understand the electronic structure of such quasi-1D systems, angle-resolved photoemission spectroscopy (ARPES) is a powerful tool because it provides us with momentum-resolved information about the electronic states. In the previous ARPES experiments on the ladder system Sr14-24-41, two dispersive features along the ladder and chain directions were observed and assigned to the ladder-derived band (near E F ) and the chain-derived band (∼ 1 eV below E F ), respectively 6,7 . However, in the previous results, only one-dimensional momentum dependence along the ladder/chain direction has been studied in momentum space. Since superconductivity in this system appears when application of pressure causes a dimensional crossover from one to two as reflected in electrical resistivity 8 , two-dimensional electronic structure has been thought to be crucial to the superconductivity. In the present work, we have performed ARPES experiments on the two-leg ladd...

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Pressure-Induced Dimensional Crossover and Superconductivity in the Hole-Doped Two-Leg Ladder Compound Sr14-xCaxCu24O41

Cited by 181 publications

References 14 publications

Transport properties of the transverse charge-density-wave systemFe3O2BO3

Transport properties of the transverse charge-density-wave systemFe3O2BO3

Temperature and composition phase diagram in the iron-based ladder compoundsBa1−xCsxFe2Se3

Underlying Fermi surface ofSr14−xCaxCu24O41
Yoshida
¹
,
Zhou
²
,
Hussain
³

et al. 2009
Phys. Rev. B
Self Cite
10
1
4
0
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Pressure-Induced Dimensional Crossover and Superconductivity in the Hole-Doped Two-Leg Ladder Compound Sr14-xCaxCu24O41

Cited by 181 publications

References 14 publications

Transport properties of the transverse charge-density-wave systemFe3O2BO3

Transport properties of the transverse charge-density-wave systemFe3O2BO3

Temperature and composition phase diagram in the iron-based ladder compoundsBa1−xCsxFe2Se3

Underlying Fermi surface ofSr14−xCaxCu24O41Yoshida1, Zhou2, Hussain3 et al. 2009Phys. Rev. BSelf Cite10140View full textAdd to dashboardCite

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Underlying Fermi surface ofSr14−xCaxCu24O41
Yoshida
¹
,
Zhou
²
,
Hussain
³

et al. 2009
Phys. Rev. B
Self Cite
10
1
4
0
View full text Add to dashboard Cite