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Wang, Guoyu; Zhang, J. D.; Yang, Rui; Chen, X. H.

doi:10.1103/physrevb.75.212503

Cited by 9 publications

(3 citation statements)

References 39 publications

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“…The following values for the OIE on T c1 were found: 16 T c1 = 29.7(1) K, 18 T c1 = 28.3(1) K, ∆T c1 = 18 T c1 -16 T c1 = -1.4(2) K, and for the OIE exponent α Tc1 = -dlnT c1 /dlnM 0 = 0.46(6) (M 0 is the oxygen isotope mass). Note that this value is comparable to that found for La 2−x Ba x CuO 4 (x = 0.10 -0.15) [30], but is much smaller than α Tc 1.89 for La 1.6−x Nd 0.4 Sr x CuO 4 (x = 1/8) [26] and α Tc 1.09 for La 1.8−x Eu 0.2 Sr x CuO 4 (x = 0.16) [27].…”

supporting

confidence: 73%

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in SuperconductingLa2−xBaxCuO4
Guguchia
¹
,
Khasanov
²
,
Bendele
³

et al. 2014
Phys. Rev. Lett.
15
2
16
0
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Large negative oxygen-isotope (16 O/ 18 O) effects (OIE's) on the static spin-stripe ordering temperature Tso and the magnetic volume fraction Vm were observed in La2−xBaxCuO4 (x = 1/8) by means of muon spin rotation experiments. The corresponding OIE exponents were found to be αT so = -0.57(6) and αV m = -0.71(9), which are sign reversed to αT c = 0.46(6) measured for the superconducting transition temperature Tc. This indicates that the electron-lattice interaction is involved in the stripe formation and plays an important role in the competition between bulk superconductivity and static stripe order in the cuprates.PACS numbers: 75.30.Fv, 76.75.+i, 74.62.Yb La 2−x Ba x CuO 4 (LBCO) was the first cuprate system where high-T c superconductivity was discovered [1]. This compound holds a unique position in the field since the bulk superconducting (SC) transition temperature T c exhibits a deep minimum at x = 1/8 [2], which is known as the 1/8 anomaly [3,4]. At this doping level neutron and X-ray diffraction experiments revealed two-dimensional static charge and spin (stripe) order [5][6][7][8]. A central issue in cuprates is the microscopic origin of stripe formation and its relation to superconductivity. Given the fact that the amplitudes of the spin and charge orders as well as the ordering temperatures have maximum values at x = 1/8 [8], where T c is strongly suppressed, one might conclude that stripes and bulk (three-dimensional) superconductivity are incompatible types of order. This conclusion is also supported by high-pressure muon spin rotation experiments (µSR) in La 1.875 Ba 0.125 CuO 4 (LBCO-1/8) [9], demonstrating that static stripe order and bulk superconductivity occur in mutually exclusive spatial regions. On the other hand, recent investigations of the relation between superconductivity and stripe order show that the situation is more complex, indicating quasi-twodimensional superconductivity in LBCO-1/8, coexisting with static stripe order, but with frustrated phase order between the layers [10-14]. The frustrated Josephson coupling was explained in terms of sinusoidally modulated [pair-density-wave (PDW)] SC order as proposed in Ref. [15]. However, at present it is unclear to what extent PDW order is a common feature of cuprate systems where stripe order occurs. While the relevance of stripe correlations for high-temperature superconductivity remains a subject of controversy, the collected experimental data indicate that the tendency toward uni-directional stripe-like ordering is common to cuprates [3,4,16]. Exploring the mechanism of stripe formation will help to clarify its role for the occurence of high-temperature superconductivity in the cuprates. The stripe phase may be caused by a purely electronic and/or electron-lattice interaction. There is increasing experimental evidence for a strong electron-lattice interaction to be essential in the cuprates (see, e.g., [17][18][19]). However, it is not clear whether this interaction is involved in the formation of the stripe phase.Isotope effe...

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supporting

confidence: 73%

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in SuperconductingLa2−xBaxCuO4
Guguchia
¹
,
Khasanov
²
,
Bendele
³

et al. 2014
Phys. Rev. Lett.
15
2
16
0
View full text Add to dashboard Cite

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“…There exist accumulating experimental and theoretical evidences that the stripe-like ordering of charge and spin (stripe phase), occurring as a result of the carrier ordering into linear arrays, separated by an antiferromagnetically ordered electronic background, is closely related to the high temperature superconductivity (HTSC) in a few families of cuprates. [1][2][3][4][5][6][7][8][9] Especially, the stripe phase has been regarded as a candidate of the origin of pseudogap effect in under-doped cuprate compounds, 10,11 for which its nature is a central problem in understanding the high-Tc copper oxide superconductors. 12,13 A bridge between the stripe phase and pseudogap could be an electronic nematic state.…”

Section: Introductionmentioning

confidence: 99%

Spin glass behavior in La5/3Sr1/3Ni1 − xCuxO4 system

Xing

Zhang

Zheng

et al. 2013

Journal of Applied Physics

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We have performed a systematic study of magnetic property in La5/3Sr1/3Ni1 − xCuxO4 system. A spin glass behavior has been observed in a broad Cu substitution range (0.1 ≤ x ≤ 0.65) at low temperature. In lower Cu doping region (0.1 ≤ x ≤ 0.2), the coexistence of stripe or stripe glass phase and spin glass phase was proposed. While in the extremely high Cu doping region, the spin glass feature diminished, and the paramagnetism-like behavior became dominated in the system. Based on the results, a magnetic phase diagram was suggested for La5/3Sr1/3Ni1 − xCuxO4 system from stripe-ordered La5/3Sr1/3NiO4 up to Fermi liquid-like La5/3Sr1/3CuO4 with Cu substitution.

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“…So far, a large OIE on the superconducting (SC) transition temperature T c was reported for La 1.6−x Nd 0.4 Sr x CuO 4 [31] and La 1.8−x Eu 0.2 Sr x CuO 4 [32] showing stripe order at x = 1/8 [33,34]. Recently, we observed substantial OIE's on magnetic quantities characterizing the static spin-stripe order in La 2−x Ba x CuO 4 with x = 1/8 (LBCO-1/8) [23].…”

mentioning

confidence: 99%

Oxygen isotope effects on lattice properties ofLa2−xBaxCuO4(x
Guguchia
¹
,
Sheptyakov
²
,
Pomjakushina
³

et al. 2015
Phys. Rev. B
3
0
1
0
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A novel negative oxygen-isotope (16 O/ 18 O) effect (OIE) on the low-temperature tetragonal phase transition temperature TLTT was observed in La2−xBaxCuO4 (x = 1/8) using high-resolution neutron powder diffraction. The corresponding OIE exponent αT LTT = -0.36(5) has the same sign as αT so = -0.57(6) found for the spin-stripe order temperature Tso. The fact that the LTT transition is accompanied by charge ordering (CO) implies the presence of an OIE also for the CO temperature Tco. Furthermore, a temperature dependent shortening of the c-axis with the heavier isotope is observed. These results combined with model calculations demonstrate that anharmonic electron-lattice interactions are essential for all transitions observed in the stripe phase of cuprates.PACS numbers: 61.05.fm, 71.45.Lr Since the discovery of high temperature superconductivity in La 2−x Ba x CuO 4 (LBCO) [1] numerous intensive studies have revealed a complex interplay between charge, spin, orbital, and lattice degrees of freedom [2, 3]. While the phase diagram of this cuprate family displays a generic complexity, a specific peculiarity is associated with it. In addition to the phase transition from the high temperature tetragonal (HTT) phase with space group I4/mmm to the low temperature orthorhombic (LTO) phase (Bmab), a further transition takes place in LBCO from the LTO to a low temperature tetragonal ( . This specific doping level is associated with static stripe order and linked to charge-spin-ordering [7][8][9][10][11][12]. The static charge order (CO) appears at the same temperature T co T LTT 55 K, and spin order (SO) sets in at T so 35 K [5].These results provide clear evidence for a subtle interplay between lattice, spin, and charge degrees of freedom. The experimental data indicate that uni-directional stripe-like ordering is common to cuprates [13][14][15]. Despite of various attempts [16][17][18][19][20][21][22][23], no consensus on the microscopic mechanism of stripe formation and the relevance of stripe correlations for high-temperature superconductivity in cuprates has been achieved.The great interest in structural aspects of cuprates is related to the original idea leading to their discovery, namely, Jahn-Teller polarons [1][2][3]. Substantial experimental evidences for a strong electron-lattice interaction has been reported for cuprates (see, e.g., [24,25] 32] showing stripe order at x = 1/8 [33,34]. Recently, we observed substantial OIE's on magnetic quantities characterizing the static spin-stripe order in La 2−x Ba x CuO 4 with x = 1/8 (LBCO-1/8) [23]. However, no OIE investigations on the LTT phase transition and charge order in 1/8 doped cuprates have been reported.In this letter we report a new negative OIE on T LTT in LBCO-1/8 determined by means of high-resolution neutron powder diffraction with an OIE exponent α TLTT = -0.35(5), which has the same sign as α Tso = -0.57(6) found for the spin-stripe order temperature T so [23]. Since the LTT transition is accompanied by static charge order, we expect an OIE also to...

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Oxygen isotope effect on the superconductivity and stripe phase inLa1.6−xNd0.4SrxCu

Cited by 9 publications

References 39 publications

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in SuperconductingLa2−xBaxCuO4
Guguchia
¹
,
Khasanov
²
,
Bendele
³

et al. 2014
Phys. Rev. Lett.
15
2
16
0
View full text Add to dashboard Cite

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in SuperconductingLa2−xBaxCuO4
Guguchia
¹
,
Khasanov
²
,
Bendele
³

et al. 2014
Phys. Rev. Lett.
15
2
16
0
View full text Add to dashboard Cite

Spin glass behavior in La5/3Sr1/3Ni1 − xCuxO4 system

Oxygen isotope effects on lattice properties ofLa2−xBaxCuO4(x
Guguchia
¹
,
Sheptyakov
²
,
Pomjakushina
³

et al. 2015
Phys. Rev. B
3
0
1
0
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Oxygen isotope effect on the superconductivity and stripe phase inLa1.6−xNd0.4SrxCu

Cited by 9 publications

References 39 publications

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in SuperconductingLa2−xBaxCuO4Guguchia1, Khasanov2, Bendele3 et al. 2014Phys. Rev. Lett.152160View full textAdd to dashboardCite

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in SuperconductingLa2−xBaxCuO4Guguchia1, Khasanov2, Bendele3 et al. 2014Phys. Rev. Lett.152160View full textAdd to dashboardCite

Spin glass behavior in La5/3Sr1/3Ni1 − xCuxO4 system

Oxygen isotope effects on lattice properties ofLa2−xBaxCuO4(xGuguchia1, Sheptyakov2, Pomjakushina3 et al. 2015Phys. Rev. B3010View full textAdd to dashboardCite

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Negative Oxygen Isotope Effect on the Static Spin Stripe Order in SuperconductingLa2−xBaxCuO4
Guguchia
¹
,
Khasanov
²
,
Bendele
³

et al. 2014
Phys. Rev. Lett.
15
2
16
0
View full text Add to dashboard Cite

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in SuperconductingLa2−xBaxCuO4
Guguchia
¹
,
Khasanov
²
,
Bendele
³

et al. 2014
Phys. Rev. Lett.
15
2
16
0
View full text Add to dashboard Cite

Oxygen isotope effects on lattice properties ofLa2−xBaxCuO4(x
Guguchia
¹
,
Sheptyakov
²
,
Pomjakushina
³

et al. 2015
Phys. Rev. B
3
0
1
0
View full text Add to dashboard Cite