Supporting evidence of the unusual insulating behavior in the low-temperature normal-state resistivity of underdoped La2?xSrxCuO4

Ando, Yoichi; Boebinger, G. S.; Passner, A.; Tamasaku, Kenji; Ichikawa, Noriya; Uchida, S.; Okuya, M.; Kimura, T.; Shimoyama, J.; Kishio, K.

doi:10.1007/bf00768492

Cited by 37 publications

(27 citation statements)

References 10 publications

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“…The resistivity of cuprates at low temperatures and in high magnetic fields revealed the appearance of an insulator-like upturn in its temperature dependence [13][14][15][16][17], which we already discussed in Sec. 3.…”

Section: Interpretation Of Experimental Mic Results 2016supporting

confidence: 55%

“…However, the original Refs. [13][14][15][16][17] result on the upturns was MIC, which means a soft gradual transition, and it occurred according to [13][14][15][16][17] at "near optimal doping", i.e., below critical doping x c . Furthermore, Boebinger et al…”

Section: Interpretation Of Experimental Mic Results 2016mentioning

confidence: 98%

“…The last leads to the IGS of bosonic insulator or to IGS of cuprates (see Refs. [13][14][15][16][17] and point 10. in the above list of our model positions). This can be detected by measuring of this plasmon gas frequency using method described in [11,12].…”

Section: Nematicity Igs Nematicity-stripe Phases Transition and Fementioning

confidence: 99%

“…[13][14][15][16][17]). There appears the question: Why the ground state of some copper-oxide compounds is Fermi liquid oscillating and of other cuprates is insulating and can this discrepancy be understood within the framework of a single model?…”

Section: Why Ground State Of Ybco Is Fermi Liquid Oscillating and Of mentioning

confidence: 99%

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Normal state pair nematicity and hidden magnetic order and metal-insulator (fermionboson) crossover origin of pseudogap phase of cuprates II

Abdullaev¹,

Abdullaev²,

Park³

et al. 2017

Nanosystems: Phys. Chem. Math.

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In the present paper II, we will gain an understanding of the nematicity, insulating ground state (IGS), nematicity to stripe phase transition, Fermi pockets evolution, and resistivity temperature upturn, as to be metal -insulator (fermion-boson)-crossover (MIC) phenomena for the pseudogap (PG) region of cuprates. While in the paper I [Abdullaev B., et al. arXiv:cond-mat/0703290], we obtained an understanding of the observed heat conductivity downturn, anomalous Lorentz ratio, insulator resistivity boundary, nonlinear entropy as manifestations of the same MIC. The recently observed nematicity and hidden magnetic order are related to the PG pair intra charge and spin fluctuations. We will try to obtain an answer to the question; why ground state of YBCO is Fermi liquid oscillating and of Bi-2212 is insulating? We will also clarify the physics of the recently observed MIC results of Lalibert et al. [arXiv:1606.04491] and explain the long-discussed transition of the electric charge density from doping to doping+1 dependence at the critical doping. We predict that at the upturns this density should have the temperature dependences n ∼ T 3 n 2 for T → 0, where n 2 is density for dopings close to the critical value. We understood that the upturns before and after the first critical doping have the same nature. We will find understanding of all above mentioned phenomena within PG pair physics.Keywords: high critical temperature superconductivity, cuprate, metal-insulator-crossover, temperature-doping phase diagram, resistivity temperature upturn, insulating ground state, nematicity and stripe phases, Fermi pockets evolution.

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Section: Interpretation Of Experimental Mic Results 2016supporting

confidence: 55%

Section: Interpretation Of Experimental Mic Results 2016mentioning

confidence: 98%

Section: Nematicity Igs Nematicity-stripe Phases Transition and Fementioning

confidence: 99%

Section: Why Ground State Of Ybco Is Fermi Liquid Oscillating and Of mentioning

confidence: 99%

See 2 more Smart Citations

Normal state pair nematicity and hidden magnetic order and metal-insulator (fermionboson) crossover origin of pseudogap phase of cuprates II

Abdullaev¹,

Abdullaev²,

Park³

et al. 2017

Nanosystems: Phys. Chem. Math.

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“…The experimental studies of HTS and PG in cuprates have provided physicists with numerous interesting and fascinating materials with unconventional properties. Among the most puzzling and thus far most intriguing is the observation of the MIC, seen in the underdome region of a temperature-doping phase diagram in the absence [1][2][3][4] or presence [5][6][7][8][9] of a strong external magnetic field. The MIC, detected after suppression of the HTS by a strong magnetic field, results in a number of different phenomena: heat conductivity downturn and anomalous Lorentz ratio [10,11], insulator resistivity boundary [6], nonlinear entropy [12,13], insulating ground state (see Refs [1][2][3][4] and [5][6][7][8][9]), dynamic nematicity [14] and static stripe phases [15,16] and Fermi pockets [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Metal-insulator (fermion-boson)-crossover origin of pseudogap phase of cuprates I: anomalous heat conductivity, insulator resistivity boundary, nonlinear entropy

Abdullaev¹,

Park²,

Park³

et al. 2017

Nanosystems: Phys. Chem. Math.

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Among all the experimental observations of cuprate physics, the metal-insulator-crossover (MIC), seen in the pseudogap (PG) region of the temperature-doping phase diagram of copper-oxides under a strong magnetic field when the superconductivity is suppressed, is most likely the most intriguing one. Since it was expected that the PG-normal state for these materials, as for conventional superconductors, is conducting. This MIC, revealed in such phenomena as heat conductivity downturn, anomalous Lorentz ratio, insulator resistivity boundary, nonlinear entropy, resistivity temperature upturn, insulating ground state, nematicity-and stripe-phases and Fermi pockets, unambiguously indicates on the insulating normal state, from which high-temperature superconductivity (HTS) appears. In the present work (article I), we discuss the MIC phenomena mentioned in the title of article. The second work (article II) will be devoted to discussion of other listed above MIC phenomena and also to interpretation of the recent observations in the hidden magnetic order and scanning tunneling microscopy (STM) experiments spin and charge fluctuations as the intra PG and HTS pair ones. We find that all these MIC (called in the literature as non-Fermi liquid) phenomena can be obtained within the Coulomb single boson and single fermion two liquid model, which we recently developed, and the MIC is a crossover of single fermions into those of single bosons. We show that this MIC originates from bosons of Coulomb two liquid model and fermions, whose origin is these bosons. At an increase of doping up to critical value or temperature up to PG boundary temperature, the boson system undegoes bosonic insulator -bosonic metal -fermionic metal transitions.Keywords: high critical temperature superconductivity, cuprate, metal-insulator-crossover, temperature-doping phase diagram, anomalous heat conductivity, insulator resistivity boundary, nonlinear entropy.

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Electronic Conduction in Oxides

Tsuda

Nasu

Fujimori

et al. 2000

Springer Series in Solid-State Sciences

261

157

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Supporting evidence of the unusual insulating behavior in the low-temperature normal-state resistivity of underdoped La2?xSrxCuO4

Cited by 37 publications

References 10 publications

Normal state pair nematicity and hidden magnetic order and metal-insulator (fermionboson) crossover origin of pseudogap phase of cuprates II

Normal state pair nematicity and hidden magnetic order and metal-insulator (fermionboson) crossover origin of pseudogap phase of cuprates II

Metal-insulator (fermion-boson)-crossover origin of pseudogap phase of cuprates I: anomalous heat conductivity, insulator resistivity boundary, nonlinear entropy

Electronic Conduction in Oxides

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