Thermoelectric power of the superconducting pyrochlore Cd2Re2O7

Dexuan Huo, Akihiro Mitsuda, Yosikazu Isikawa, Junji Sakurai, Hironori Sakai, Hiroyuki Ohno, Masaki Kato, Kazuyoshi Yoshimura, Shinsaku Kambe, Russell E. Walstedt

Research output: Contribution to journalArticle

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Abstract

We report the thermoelectric power (S) of the recently discovered superconducting pyrochlore Cd2Re2O7 with Tc = 1.4 K. In the normal state, this compound shows a continuous structural phase transition at T* = 200 K. S is negative from room temperature down to 1.4 K. Above T*, S shows small absolute values and approximatively linear dependence on temperature. S(295 K) = -2.2 μV K-1. The absolute value of S increases rapidly below T*. A kink and a minimum were observed round 125 and 60 K, respectively. S(60 K) = -8.2 μV K-1. In the low-temperature range 1.4 K < T < 20 K, another linear portion was observed. As regards the T2-dependent electrical resistivity in this temperature range, a Fermi liquid ground state is suggested for this compound. No change of S in a magnetic field up to 2 T was observed at 77 and 295 K.

Original languageEnglish
Pages (from-to)L257-L260
JournalJournal of Physics Condensed Matter
Volume14
Issue number12
DOIs
Publication statusPublished - Apr 1 2002

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Thermoelectric power
Fermi liquids
Temperature
electrical resistivity
ground state
temperature
room temperature
magnetic fields
Ground state
Phase transitions
Magnetic fields
pyrochlore

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Huo, D., Mitsuda, A., Isikawa, Y., Sakurai, J., Sakai, H., Ohno, H., ... Walstedt, R. E. (2002). Thermoelectric power of the superconducting pyrochlore Cd2Re2O7. Journal of Physics Condensed Matter, 14(12), L257-L260. https://doi.org/10.1088/0953-8984/14/12/104

Thermoelectric power of the superconducting pyrochlore Cd2Re2O7. / Huo, Dexuan; Mitsuda, Akihiro; Isikawa, Yosikazu; Sakurai, Junji; Sakai, Hironori; Ohno, Hiroyuki; Kato, Masaki; Yoshimura, Kazuyoshi; Kambe, Shinsaku; Walstedt, Russell E.

In: Journal of Physics Condensed Matter, Vol. 14, No. 12, 01.04.2002, p. L257-L260.

Research output: Contribution to journalArticle

Huo, D, Mitsuda, A, Isikawa, Y, Sakurai, J, Sakai, H, Ohno, H, Kato, M, Yoshimura, K, Kambe, S & Walstedt, RE 2002, 'Thermoelectric power of the superconducting pyrochlore Cd2Re2O7', Journal of Physics Condensed Matter, vol. 14, no. 12, pp. L257-L260. https://doi.org/10.1088/0953-8984/14/12/104
Huo, Dexuan ; Mitsuda, Akihiro ; Isikawa, Yosikazu ; Sakurai, Junji ; Sakai, Hironori ; Ohno, Hiroyuki ; Kato, Masaki ; Yoshimura, Kazuyoshi ; Kambe, Shinsaku ; Walstedt, Russell E. / Thermoelectric power of the superconducting pyrochlore Cd2Re2O7. In: Journal of Physics Condensed Matter. 2002 ; Vol. 14, No. 12. pp. L257-L260.
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AU - Sakai, Hironori

AU - Ohno, Hiroyuki

AU - Kato, Masaki

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