Research trends in electron-doped cuprate superconductors

Yuan, Jie; He, Ge; Yang, Hua; Shi, Yujun; Zhu, Bo; Jin, Kui

doi:10.1007/s11433-015-5701-8

Cited by 9 publications

(6 citation statements)

References 125 publications

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“…14 above, see the review by Armitage, Fournier and Greene [41]. One puzzling tunneling result still under recent discussion (J. Yuan et al [323]) is the existence (Biswas et al [324] and Kleefisch et al [325]) -known since 2001 -of a so-called 'normal state energy gap' (NSG) of ~5 meV in M2-xCexCuO4, M=Pr,Nd, at 2 K in magnetic field > Hc2. Work in 2003 by L. Alff et al [326] added LCCO to the list of electron doped cuprates that show an NSG.…”

Section: Tunnelingmentioning

confidence: 99%

Unconventional superconductivity

Stewart

2017

Advances in Physics

208

165

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Abstract:"Conventional" superconductivity, as used in this review, refers to electron-phonon coupled superconducting electron pairs described by BCS theory. Unconventional superconductivity refers to superconductors where the Cooper pairs are not bound together by phonon-exchange but instead by exchange of some other kind, e. g. spin fluctuations in a superconductor with magnetic order either coexistent or nearby in the phase diagram. Such unconventional superconductivity has been known experimentally since heavy fermion CeCu2Si2, with its strongly correlated 4f electrons, was discovered to superconduct below 0.6 K in 1979. Since the discovery of unconventional superconductivity in the layered cuprates in 1986, the study of these materials saw Tc jump to 164 K by 1994. Further progess in high temperature superconductivity would be aided by understanding the cause of such unconventional pairing. This review compares the fundamental properties of 9 unconventional superconducting classes of materialsfrom 4f-electron heavy fermions to organic superconductors to classes where only three known members exist to the cuprates with over 200 examples -with the hope that common features will emerge to help theory explain (and predict!) these phenomena. In addition, three new emerging classes of superconductors (topological, interfacial -e. g. FeSe on SrTiO3, and H2S under high pressure) are briefly covered, even though their "conventionality" is not yet fully determined.

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Section: Tunnelingmentioning

confidence: 99%

Unconventional superconductivity

Stewart

2017

Advances in Physics

208

165

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“…The inaccuracy of phase boundaries makes it non-trivial to study the phase transition behavior around the critical points. [8] In other words, the multi-element and multi-variable nature of synthesis conditions of unconventional superconductors represents a significant challenge to the efficiency and precision of materials exploration. A new approach is required to change the slow and serendipitous trial-and-error process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mn substitution on superconductivity in iron selenide (Li, Fe)OHFeSe single crystals

Mao

Zhou

et al. 2018

Chinese Phys. B

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As an essential component of the Materials Genome Initiative aiming to shorten the period of materials research and development, combinatorial synthesis and rapid characterization technologies have been playing a more and more important role in exploring new materials and comprehensively understanding materials properties. In this review, we discuss the advantages of high-throughput experimental techniques in researches on superconductors. The evolution of combinatorial thin-film technology and several high-speed screening devices are briefly introduced. We emphasize the necessity to develop new high-throughput research modes such as a combination of high-throughput techniques and conventional methods.

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“…For convenience, the community abbreviates the hole-and electron-doped 214 types as T and T', respectively. There are only two branches in electron-doped family: the aforementioned T' superconductor (point group D 4h 17 , space group I4/mmm) and infinite-layer superconductor (point group D 4h 1 , space group P4/mmm). Owing to a limited number of electron-doped cuprates and their complicated synthesis procedures compared to the hole-doped ones, heretofore, researches were addressed mostly on the hole-doped family and rarely on electron-doped counterparts.…”

Section: Introductionmentioning

confidence: 99%

“…x Ce x CuO 4 and a 2D Fermi liquid theory was employed to fit ρ(T) of x = 0.10 -0.20 as well as Co-doped samples[58,59]. For slightly overdoped Pr 2-x Ce x CuO 4 with x=0 17,. Fournier et al …”

mentioning

confidence: 99%

Transport anomalies and quantum criticality in electron-doped cuprate superconductors

Zhang

et al. 2016

Physica C: Superconductivity and its Applications

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Superconductivity research is like running a marathon. Three decades after the discovery of high-T c cuprates, there have been mass data generated from transport measurements, which bring fruitful information. In this review, we give a brief summary of the intriguing phenomena reported in electron-doped cuprates from the aspect of electrical transport as well as the complementary thermal transport. We attempt to sort out common features of the electron-doped family, e.g. the strange metal, negative magnetoresistance, multiple sign reversals of Hall in mixed state, abnormal Nernst signal, complex quantum criticality. Most of them have been challenging the existing theories, nevertheless, a unified diagram certainly helps to approach the nature of electron-doped cuprates.2

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Research trends in electron-doped cuprate superconductors

Cited by 9 publications

References 125 publications

Unconventional superconductivity

Unconventional superconductivity

Effect of Mn substitution on superconductivity in iron selenide (Li, Fe)OHFeSe single crystals

Transport anomalies and quantum criticality in electron-doped cuprate superconductors

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