High pressure effects revisited for the cuprate superconductor family with highest critical temperature

Yamamoto, Atsushi; Takeshita, Nao; Terakura, C.; Tokura, Y.

doi:10.1038/ncomms9990

Cited by 88 publications

(66 citation statements)

References 18 publications

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“…To illustrate the different types behavior we select three situations at atmospheric pressure: one in the underdoped regime: x < x 0 (P = 0) , x = x 0 (P = 0) and x > x 0 (P = 0). Experimental data from [47]. Solid line is our theoretical prediction.…”

Section: ) Variation Of T C (X) With Pressurementioning

confidence: 92%

“…, thus implying, according to (46) and (47) that necessarily ∆ 0 , M 0 = 0. As we lower the temperature, we eventually reach T = T * , which characterizes the situation in which αF (∆ 0 , M 0 , µ) = η(N gP ) gc , hence, according to (47), we can have M 0 = 0 for T ≤ T * . As we keep lowering the temperature, we eventually reach the situ-…”

Section: ) Fermion Integrationmentioning

confidence: 97%

“…The SC phase diagrams for Hg1212 and Hg1223, corresponding to T c (x, P ) for different pressures are shown below. The experimental data of the two previous figures were obtained from [47], using our equations (71) and (73), instead of a parabola for obtaining the different doping values corresponding to each value of T c following the same procedure as in [47].…”

Section: ) Variation Of T C (X) With Pressurementioning

confidence: 99%

“…Optimal temperature of Hg1223 as a function of pressure, according to our theoretical prediction. Experimental data from[47].T max (N=1,P) T max (N=2,P)T max (N=3,P) Optimal Temperature calculated from our model for the mercury family for one, two and three planes and comparison with data from[47].…”

mentioning

confidence: 99%

“…Tc as a function of pressure for the x = 0.135 compound. The data were taken from[47]. Temperature Tc(x = x0) of Hg1212 as a function of pressure.…”

mentioning

confidence: 99%

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Superconducting and pseudogap transition temperatures in high-T_c cuprates and the T_c dependence on pressure

Marino

Corrêa

Arouca

et al. 2020

Supercond. Sci. Technol.

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We derive analytic expressions for the critical temperatures of the superconducting (SC) and pseudogap (PG) transitions of the high-Tc cuprates as a function of doping. These are in excellent agreement with the experimental data both for single-layered materials such as LSCO, Bi2201 and Hg1201 and multi-layered ones, such as Bi2212, Bi2223, Hg1212 and Hg1223. Optimal doping occurs when the chemical potential vanishes, thus leading to an universal expression for the optimal SC transition temperatures. This allows for the obtainment of a quantitative description of the growth of such temperatures with the number of layers, N, which accurately applies to the Bi, Hg and T l families of cuprates. We study the pressure dependence of the SC transition temperatures, obtaining excellent agreement with the experimental data for different materials and dopings. These results are obtained from an effective Hamiltonian for the itinerant oxygen holes, which includes both the electric repulsion between them and their magnetic interactions with the localized copper ions. We show that the former interaction is responsible for the SC and the latter, for the PG phases, the phase diagram of cuprates resulting from the competition of both. The Hamiltonian is defined on a bipartite oxygen lattice, which results from the fact that only the px and py oxygen orbitals alternatively hybridize with the 3d copper orbitals. From this, we can provide an unified explanation for the d x 2 −y 2 symmetry of both the SC and PG order parameters and obtain the Fermi pockets observed in ARPES experiments.

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Section: ) Variation Of T C (X) With Pressurementioning

confidence: 92%

Section: ) Fermion Integrationmentioning

confidence: 97%

Section: ) Variation Of T C (X) With Pressurementioning

confidence: 99%

mentioning

confidence: 99%

“…Tc as a function of pressure for the x = 0.135 compound. The data were taken from[47]. Temperature Tc(x = x0) of Hg1212 as a function of pressure.…”

mentioning

confidence: 99%

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Superconducting and pseudogap transition temperatures in high-T_c cuprates and the T_c dependence on pressure

Marino

Corrêa

Arouca

et al. 2020

Supercond. Sci. Technol.

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Materials Informatics Reveals Unexplored Structure Space in Cuprate Superconductors

Goodall

Zhu

MacManus‐Driscoll

et al. 2021

Adv Funct Materials

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High-temperature superconducting cuprates have the potential to be transformative in a wide range of energy applications. In this work, the corpus of historical data about cuprates is analyzed using materials informatics, re-examining how their structures are related to their critical temperatures (Tc). The available data is highly clustered and no single database contains all the features of interest to properly examine trends. To work around these issues a linear calibration approach that allows the utilization of multiple data sources is employed, combining fine resolution data for which the Tc is unknown with coarse resolution data where it is known. The hybrid data set constructed enables the exploration of the trends in Tc with the apical and in-plane copper-oxygen distances. It is shown that large regions of the materials space have yet to be explored. Novel experiments relying on the nano-engineering of the crystal structure may enable the exploration of such new regions. Based on the trends identified it is proposed that single layer Bibased cuprates are good candidate systems for such experiments.

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Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors

Restrepo

2022

Springer Theses

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I want to first thank my advisor, Juan Carlos Campuzano, for his understanding, his seemingly infinite patience and, of course, his advice, which often went beyond the scientific. I am also indebted to professors Utpal Chatterjee and Dirk Morr for several key suggestions which helped this project come to fruition. (I am particularly grateful to Professor Chatterjee for kindly sharing a large data set analyzed in this work.) I must also thank my colleague, Hao Xu, for his perseverance, positive attitude, and resourcefulness in solving the many technical difficulties that plagued our experiment. I am grateful to Fanny Rodolakis and Cris Adriano for helpful advice during the many hours spent at the synchrotron facility during the first two years of my research. It is also a great pleasure for me to acknowledge the outstanding work performed by the instrument makers at UIC; in particular, Kevin Lynch, Bob Kurdydyk, Rick Frueh, and Rich Djoutrek. The many parts they fabricated for us, their aid in the design process, and the instrumentation difficulties they helped us overcome, are testimony to a contribution to this work that cannot be overstated. Also at UIC, I wish to thank the graduate student advisor James Nell for his patience and his eagerness to help, not just me, but also other physics graduate students. I am equally grateful to Derrick Stanley and Brian Shim for placing orders for me in a timely fashion and keeping our accounts under control.Professors Mark Schlossman and Anjum Ansari also deserve special mention. Aside from being outstanding physics instructors, they provided me with a better appreciation of the true nature of scientific research by kindly allowing me to work in their labs as an undergraduate assistant. iv ACKNOWLEDGMENTS (Continued)I also want to thank my defense committee for their interest in my work and for making part of an important event in my career.On a more personal side, I would like to extend my gratitude to my family, especially to my parents, for their unfaltering support and encouragement throughout my life. This work is theirs. Likewise, I would like to thank my partner, Christine Miller, for her kindness and for the affection she always knew how to express when I most needed it. Finally, I should very much like to thank the friends I made during my stay at UIC, as well as my old childhood friends from Colombia. It is no exaggeration to say that through all our bickering, arguing, joking, laughing, agreeing and disagreeing, they have left an indelible mark in my memory and thought. v SUMMARYWhen cooled to temperatures well below the condensation point of helium, most elemental metals exhibit a remarkable property: they conduct electricity without energy dissipation.Within the theory of Bardeen, Cooper, and Schieffer (BCS), this behavior is due to an attractive interaction between electrons made possible by local distortions of the ionic lattice. Due to this pairing interaction, the system condenses into a collection of so-called Cooper pairs, lowering the free energy and sup...

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High pressure effects revisited for the cuprate superconductor family with highest critical temperature

Cited by 88 publications

References 18 publications

Superconducting and pseudogap transition temperatures in high-T_c cuprates and the T_c dependence on pressure

Superconducting and pseudogap transition temperatures in high-T_c cuprates and the T_c dependence on pressure

Materials Informatics Reveals Unexplored Structure Space in Cuprate Superconductors

Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors

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High pressure effects revisited for the cuprate superconductor family with highest critical temperature

Cited by 88 publications

References 18 publications

Superconducting and pseudogap transition temperatures in high-Tc cuprates and the Tc dependence on pressure

Superconducting and pseudogap transition temperatures in high-Tc cuprates and the Tc dependence on pressure

Materials Informatics Reveals Unexplored Structure Space in Cuprate Superconductors

Angle-Resolved Photoemission Spectroscopy Study of Spin Fluctuations in the Cuprate Superconductors

Contact Info

Product

Resources

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Superconducting and pseudogap transition temperatures in high-T_c cuprates and the T_c dependence on pressure

Superconducting and pseudogap transition temperatures in high-T_c cuprates and the T_c dependence on pressure