Tunneling spectroscopy on an electron-doped Pr1-xLaCexCuO4withx= 0.11

Miyakawa, Nobuaki; Minematsu, M.; Ogata, Kazuma; Fujita, M.; Yamada, K.

doi:10.1088/1742-6596/150/5/052163

Cited by 2 publications

(3 citation statements)

References 26 publications

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“…Tunneling spectra of Jubileo and coworkers [82] on P r 1−x LaCe x CuO 4−y also show a clear asymmetry of the same sign (Figs. 1 and 2), and this is also seen in tunneling on P r 1−x LaCe x CuO 4 by Miyakawa et al [83] (Figs. 1 and 3) and Diamant et al [84] (Fig.…”

Section: Tunneling Asymmetrysupporting

confidence: 60%

“…These conclusions agree with what our model has predicted since 1989. To further support this picture it would be important to confirm experimentally that tunneling asymmetry of the same sign as for hole-doped cuprates is the generic behavior in electron-doped cuprates, as initial experimental results appear to show [79][80][81][82][83][84]. This would rule out theories based on electron-hole symmetric models [85].…”

Section: Summary and Discussionmentioning

confidence: 97%

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Understanding electron-doped cuprate superconductors as hole superconductors

Hirsch

Marsiglio

2019

Physica C: Superconductivity and its Applications

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Since their experimental discovery in 1989, the electron-doped cuprate superconductors have presented both a major challenge and a major opportunity. The major challenge has been to determine whether these materials are fundamentally different from or essentially similar to their hole-doped counterparts; a major opportunity because answering this question would strongly constrain the possible explanations for what is the essential physics that leads to high temperature superconductivity in the cuprates, which is still not agreed upon. Here we argue that experimental results over the past 30 years on electron-doped cuprate materials have provided conclusive answers to these fundamental questions, by establishing that both in hole-and electron-doped cuprates, superconductivity originates in pairing of hole carriers in the same band. We discuss a model to describe this physics that is different from the generally accepted ones, and calculate physical observables that agree with experiment, in particular tunneling characteristics. We argue that our model is simpler, more natural and more compelling than other models. Unlike other models, ours was originally proposed before rather than after many key experiments were performed. PACS numbers:

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