Coexistence of ferromagnetism and superconductivity in cerium, tellurium (1.82).
- Myung-Hwa
- Hyoung-Chan
- Alex H.
- Toshiro
- Heinrich
CeTe1 .82 crystallizes in layered tetragonal Cu2Sb-type structure. At ambient pressure, the presence of the charge density wave (CDW) gap accompanying with a lattice distortion in the Te sheet is verified by electron-tunneling spectroscopy measurement. We measured the electrical resistivity on a CeTe1 .82 single crystal as a function of temperature and magnetic field (i // ab-plain, H// c-axis) performed under hydrostatic pressure up to 9 kbar using the 20 T superconduting magnet at the Pulse Field Facility, NHMFL, Los Alamos National Laboratory . Some of the results are shown in Fig.l, which represent the low temperature dependence of the normalized resistance under applied pressure of 5 kbar, the superconducting transition is observed at TC = 2 .7K (well below the magnetic ordering temperatures, the Neel temperature TN = 4 .8K and the shortrange ferromagnetic temperature TSRF = 6K in 5 kbar). This (SC) transition temperature is the highest among f-electron systems . The application of magnetic field suppresses the resistivity drop as expected for a supeconducting transition . The coexisting magnetic structure of a mixed ferromagnetism and antiferromagnetism can provide a clue for this remarkably high Tsc.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 976515
- Report Number(s):
- LA-UR-03-0347; TRN: US201017%%663
- Resource Relation:
- Conference: Submitted to: APS March Meeting, March 3-7, 2003, Austin, Texas
- Country of Publication:
- United States
- Language:
- English
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