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Discovery of colossal Seebeck effect in metallic Cu2Se

Author

Listed:
  • Dogyun Byeon

    (Toyota Technological Institute)

  • Robert Sobota

    (Toyota Technological Institute)

  • Kévin Delime-Codrin

    (Toyota Technological Institute)

  • Seongho Choi

    (Toyota Technological Institute)

  • Keisuke Hirata

    (Toyota Technological Institute)

  • Masahiro Adachi

    (Sumitomo Electric Industries, Ltd.)

  • Makoto Kiyama

    (Sumitomo Electric Industries, Ltd.)

  • Takashi Matsuura

    (Sumitomo Electric Industries, Ltd.)

  • Yoshiyuki Yamamoto

    (Sumitomo Electric Industries, Ltd.)

  • Masaharu Matsunami

    (Toyota Technological Institute)

  • Tsunehiro Takeuchi

    (Toyota Technological Institute)

Abstract

Both electrical conductivity σ and Seebeck coefficient S are functions of carrier concentration being correlated with each other, and the value of power factor S2σ is generally limited to less than 0.01 W m−1 K−2. Here we report that, under the temperature gradient applied simultaneously to both parallel and perpendicular directions of measurement, a metallic copper selenide, Cu2Se, shows two sign reversals and colossal values of S exceeding ±2 mV K−1 in a narrow temperature range, 340 K

Suggested Citation

  • Dogyun Byeon & Robert Sobota & Kévin Delime-Codrin & Seongho Choi & Keisuke Hirata & Masahiro Adachi & Makoto Kiyama & Takashi Matsuura & Yoshiyuki Yamamoto & Masaharu Matsunami & Tsunehiro Takeuchi, 2019. "Discovery of colossal Seebeck effect in metallic Cu2Se," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-018-07877-5
    DOI: 10.1038/s41467-018-07877-5
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    Cited by:

    1. Jaeho Yoon & Hanhwi Jang & Min-Wook Oh & Thomas Hilberath & Frank Hollmann & Yeon Sik Jung & Chan Beum Park, 2022. "Heat-fueled enzymatic cascade for selective oxyfunctionalization of hydrocarbons," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Kunpeng Zhao & Zhongmou Yue & Hexige Wuliji & Hongyi Chen & Tingting Deng & Jingdan Lei & Pengfei Qiu & Lidong Chen & Xun Shi, 2024. "Modeling critical thermoelectric transports driven by band broadening and phonon softening," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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