Hole pocket–driven superconductivity and its universal features in the electron-doped cuprates

Yangmu Li, W. Tabis, Y. Tang, G. Yu, J. Jaroszynski, N. Barišić, M. Greven

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

After three decades of intensive research attention, the emergence of superconductivity in cuprates remains an unsolved puzzle. One major challenge has been to arrive at a satisfactory understanding of the unusual metallic “normal state” from which the superconducting state emerges upon cooling. A second challenge has been to achieve a unified understanding of hole- and electron-doped compounds. Here, we report detailed magnetoresistance measurements for the archetypal electron-doped cuprate Nd 2x Ce x CuO 4+d that, in combination with previous data, provide crucial links between the normal and superconducting states and between the electron- and hole-doped parts of the phase diagram. The characteristics of the normal state (magnetoresistance, quantum oscillations, and Hall coefficient) and those of the superconducting state (superfluid density and upper critical field) consistently indicate two-band (electron and hole) features and point to hole pocket–driven superconductivity in these nominally electron-doped materials. We show that the approximate Uemura scaling between the superconducting transition temperature and the superfluid density found for hole-doped cuprates also holds for the small hole component of the superfluid density in electron-doped cuprates.

Original languageEnglish (US)
Article numbereaap7349
Pages (from-to)eaap7349
JournalScience Advances
Volume5
Issue number2
DOIs
StatePublished - Feb 1 2019

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cuprates
superconductivity
electrons
Hall effect
transition temperature
phase diagrams
cooling
scaling
oscillations

How much support was provided by MRSEC?

  • Partial

Reporting period for MRSEC

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Hole pocket–driven superconductivity and its universal features in the electron-doped cuprates. / Li, Yangmu; Tabis, W.; Tang, Y.; Yu, G.; Jaroszynski, J.; Barišić, N.; Greven, M.

In: Science Advances, Vol. 5, No. 2, eaap7349, 01.02.2019, p. eaap7349.

Research output: Contribution to journalArticle

Li, Yangmu ; Tabis, W. ; Tang, Y. ; Yu, G. ; Jaroszynski, J. ; Barišić, N. ; Greven, M. / Hole pocket–driven superconductivity and its universal features in the electron-doped cuprates. In: Science Advances. 2019 ; Vol. 5, No. 2. pp. eaap7349.
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