Magnetoresistance for single crystals of Bi2Sr2CaCu2Ox in pulsed high magnetic fields up to 40 T

Nakao, Kōichi; Takamuku, K.; Hashimoto, Katsufumi; Koshizuka, N.; Tanaka, Shōji

doi:10.1016/0921-4526(94)91097-9

Cited by 24 publications

(19 citation statements)

References 9 publications

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“…The observed semiconducting-like ρ c (T ) and negative out-of-plane magnetoresistance have been discussed in terms of different models, such as c-axis tunneling with a strong suppression by charge fluctuations excited in the process of tunneling 14 , c-axis hopping with interplanar scattering 12 , a reduction of the density of states due to superconducting fluctuations 6,8,9 , and a pseudogap and/or spin gap opening in the density of states 7,11 . This is another striking feature of HTS.…”

Section: Introductionmentioning

confidence: 99%

“…Over the last few years, many theoretical and experimental investigations have been devoted to the transport properties of HTS. In particular, in the temperature region showing the semiconductinglike c-axis resistivity, most compounds reveal a negative out-of-plane magnetoresistance: the Bi 2 Sr 2 CaCu 2 O 8+δ (Bi2212) 1,6,7,8,9,10 , the La 2−x Sr x CuO 4 (LSCO) 11,12 , and the La-doped Bi 2 Sr 2−x La x CuO 6+δ (BSLCO) system 5,13 .…”

Section: Introductionmentioning

confidence: 99%

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Metal-to-insulator crossover and pseudogap in single-layerBi2+xSr2−xCu1+<

Vedeneev

Maude

2004

Phys. Rev. B

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The in-plane ρ ab (H) and the out-of-plane ρc(H) magneto-transport in magnetic fields up to 28 T has been investigated in a series of high quality, single crystal, hole-doped La-free Bi2201 cuprates for a wide doping range and over a wide range of temperatures down to 40 mK. With decreasing hole concentration going from the overdoped (p=0.2) to the underdoped (p=0.12) regimes, a crossover from a metallic to and insulating behavior of ρ ab (T ) is observed in the low temperature normal state, resulting in a disorder induced metal insulator transition. In the zero temperature limit, the normal state ratio ρc(H)/ρ ab (H) of the heavily underdoped samples in pure Bi2201 shows an anisotropic 3D behavior, in striking contrast with that observed in La-doped Bi2201 and LSCO systems. Our data strongly support that that the negative out-of-plane magnetoresistance is largely governed by interlayer conduction of quasiparticles in the superconducting state, accompanied by a small contribution of normal state transport associated with the field dependent pseudogap. Both in the optimal and overdoped regimes, the semiconducting behavior of ρc(H) persists even for magnetic fields above the pseudogap closing field Hpg. The method suggested by Shibauchi et al. (Phys. Rev. Lett. 86, 5763, (2001)) for evaluating Hpg is unsuccessful for both under-and overdoped Bi2201 samples. Our findings suggest that the normal state pseudogap is not always a precursor of superconductivity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal-to-insulator crossover and pseudogap in single-layerBi2+xSr2−xCu1+<

Vedeneev

Maude

2004

Phys. Rev. B

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“…2 Application of a magnetic field results in a positive in-plane magnetoresistance ͑MR͒ ⌬ ab / ab (0)Ͼ0 that violates Kohler's rule 3,4 and a negative out-of-plane MR ⌬ c / c (0)Ͻ0. 5,6 Possible explanations for ⌬ ab / ab (0) include two different carrier scattering rates 7 far above T c and the magnetic-field suppression of superconducting order parameter fluctuations close to T c . 8 ⌬ c / c (0) has been interpreted in terms of a spin gap, 6 by interplane tunneling together with a renormalization of the carrier density of states as a result of superconducting fluctuations, 9,5 and several other models.…”

mentioning

confidence: 99%

“…5,6 Possible explanations for ⌬ ab / ab (0) include two different carrier scattering rates 7 far above T c and the magnetic-field suppression of superconducting order parameter fluctuations close to T c . 8 ⌬ c / c (0) has been interpreted in terms of a spin gap, 6 by interplane tunneling together with a renormalization of the carrier density of states as a result of superconducting fluctuations, 9,5 and several other models. In this paper, we report simultaneous measurements of the anisotropic MR and their interpretation in a coherent model.…”

mentioning

confidence: 99%

Positive in-plane and negative out-of-plane magnetoresistance in the overdoped high-temperature superconductorBi2Sr2
Heine
¹
,
Lang
²
,
Wang
³

et al. 1999
Phys. Rev. B
27
10
14
0
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“…It is assumed that the inter-grain resistance in ceramic YBa 2 Cu 3 O x (5 % Ag), that prevents a high I cr from reducing by the presence of silver in granular spaces of the sample. Knowing how the vortexes move and arrange themselves under various conditions, such as temperature, magnetic field, stress-effects, and doping agent (Ag), and how these phenomena are influenced by the physical properties of the material will be critical in controlling the flux motion and maintaining the super current flow in these materials [13,18,22,23,53,[56][57][58][59].…”

Section: Introductionmentioning

confidence: 99%

Quantum Phase Transition in HTSC Thick Films: YBa2Cu3O x , YBa2Cu3O x (5 % Ag-Doped) in a Strong Pulsed Magnetic Field up to 32 T at Low Temperatures (58–100 K), Current Densities and Stress-Effect

Broide

Yakunin

2012

J Supercond Nov Magn

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We have researched the influence of pulsed magnetic fields up to 32 T on the magneto-resistance of thick films (50 Mk) of YBa 2 Cu 3 O x and YBa 2 Cu 3 O x (5 % Ag-doped) that were produced from synthesized powders. (Figs. 1-9): concentrate with 6.85-6.9 % O 2 and a tail fraction 6.5-6.6 % O 2 .We observed a linear plot at currents of more than 1 mA at 77 K in YBa 2 Cu 3 O x (5 % Ag-doped) at B > 5 T and in the concentrate YBa 2 Cu 3 O x samples with I = 1 mA, T = 68.2 K. Pulsed magnetic fields up to 32 T, at I = 1 mA had practically no influence on the value of the magnetoresistance in the concentrate YBa 2 Cu 3 O x specimens at T = 57.9 K and up to 17 T for YBa 2 Cu 3 O x (5 % Ag) at 77 K (Meissner effect). However, for B > 17 T, YBa 2 Cu 3 O x (5 % Ag) at 77 K demonstrates a tendency toward lower resistance.In the presence to 10 pulses in a cyclic pulsed magnetic field of 32 T, there is a sharp change of magnetic properties of an HTSC that can lead to nontrivial changes in the transition temperature, due to the strong mechanic stresses, sharp change value structure, and because one of the phases becomes superconducting (Figs. 3A, 3B). The behavior of the magnetoresistance of S-N-S contacts in pulsed magnetic Analysis of microscopic models of quantum phase transitions was made in a granular superconductor in an attempt to explain the results on the studied HTSC-films and to give a physical interpretation to the deduced parameters of some experiments on the basis of "spin (vortex) glass" (vortex ice).

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Magnetoresistance for single crystals of Bi2Sr2CaCu2Ox in pulsed high magnetic fields up to 40 T

Cited by 24 publications

References 9 publications

Metal-to-insulator crossover and pseudogap in single-layerBi2+xSr2−xCu1+<

Metal-to-insulator crossover and pseudogap in single-layerBi2+xSr2−xCu1+<

Positive in-plane and negative out-of-plane magnetoresistance in the overdoped high-temperature superconductorBi2Sr2
Heine
¹
,
Lang
²
,
Wang
³

et al. 1999
Phys. Rev. B
27
10
14
0
View full text Add to dashboard Cite

Quantum Phase Transition in HTSC Thick Films: YBa2Cu3O x , YBa2Cu3O x (5 % Ag-Doped) in a Strong Pulsed Magnetic Field up to 32 T at Low Temperatures (58–100 K), Current Densities and Stress-Effect

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Magnetoresistance for single crystals of Bi2Sr2CaCu2Ox in pulsed high magnetic fields up to 40 T

Cited by 24 publications

References 9 publications

Metal-to-insulator crossover and pseudogap in single-layerBi2+xSr2−xCu1+<

Metal-to-insulator crossover and pseudogap in single-layerBi2+xSr2−xCu1+<

Positive in-plane and negative out-of-plane magnetoresistance in the overdoped high-temperature superconductorBi2Sr2Heine1, Lang2, Wang3 et al. 1999Phys. Rev. B2710140View full textAdd to dashboardCite

Quantum Phase Transition in HTSC Thick Films: YBa2Cu3O x , YBa2Cu3O x (5 % Ag-Doped) in a Strong Pulsed Magnetic Field up to 32 T at Low Temperatures (58–100 K), Current Densities and Stress-Effect

Contact Info

Product

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About

Positive in-plane and negative out-of-plane magnetoresistance in the overdoped high-temperature superconductorBi2Sr2
Heine
¹
,
Lang
²
,
Wang
³

et al. 1999
Phys. Rev. B
27
10
14
0
View full text Add to dashboard Cite