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Evidence for two-dimensional Ising superconductivity in gated MoS2

Lu, J. M., Zheliuk, O., Leermakers, I., Yuan, N. F. Q., Zeitler, U., Law, K. T. & Ye, J. T., 11-Dec-2015, In : Science. 350, 6266, p. 1353-1357 5 p.

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  • Evidence for two-dimensional Ising superconductivity in gated MoS2

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DOI

The Zeeman effect, which is usually detrimental to superconductivity, can be strongly protective when an effective Zeeman field from intrinsic spin-orbit coupling locks the spins of Cooper pairs in a direction orthogonal to an external magnetic field. We performed magnetotransport experiments with ionic-gated molybdenum disulfide transistors, in which gating prepared individual superconducting states with different carrier dopings, and measured an in-plane critical field B-c2 far beyond the Pauli paramagnetic limit, consistent with Zeeman-protected superconductivity. The gating-enhanced B-c2 is more than an order of magnitude larger than it is in the bulk superconducting phases, where the effective Zeeman field is weakened by interlayer coupling. Our study provides experimental evidence of an Ising superconductor, in which spins of the pairing electrons are strongly pinned by an effective Zeeman field.

Original languageEnglish
Pages (from-to)1353-1357
Number of pages5
JournalScience
Volume350
Issue number6266
Publication statusPublished - 11-Dec-2015

    Keywords

  • UPPER CRITICAL-FIELD, PARAMAGNETIC LIMIT, ELECTRIC-FIELD, (LASE)(1.14)(NBSE2), (TMTSF)(2)PF6, TRANSITIONS, MONOLAYER, INSULATOR, BEHAVIOR, DENSITY

ID: 35850173