Abstract
We report the temperature-dependent resistivity ρ(T) of chalcogenide NiS2-xSex (x = 0.1) using hydrostatic pressure as a control parameter in the temperature range of 4–300 K. The insulating behavior of ρ(T) survives at low temperatures in the pressure regime below 7.5 kbar, whereas a clear insulator-to-metallic transition is observed above 7.5 kbar. Two types of magnetic transitions, from the paramagnetic (PM) to the antiferromagnetic (AFM) state and from the AFM state to the weak ferromagnetic (WF) state, were evaluated and confirmed by magnetization measurement. According to the temperature–pressure phase diagram, the WF phase survives up to 7.5 kbar, and the transition temperature of the WF transition decreases as the pressure increases, whereas the metal–insulator transition temperature increases up to 9.4 kbar. We analyzed the metallic behavior and proposed Fermi-liquid behavior of NiS1.9Se0.1.
Original language | English |
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Pages (from-to) | 235-238 |
Number of pages | 4 |
Journal | Physica B: Condensed Matter |
Volume | 536 |
DOIs | |
State | Published - 1 May 2018 |
Bibliographical note
Funding Information:The work at Kyungpook National University was supported by the Brain Korea (BK) and the National Research Funding (NRF) [Grants No. 2013R1A1A2063904 and No. 2016R1A2B4016656] by the Korean Government. W.K. was supported by the NRF by the Ministry of Science, ICT and Future Planning (MSIP) (Grant No. 2015-001948).
Funding Information:
The work at Kyungpook National University was supported by the Brain Korea (BK) and the National Research Funding (NRF) [Grants No. 2013R1A1A2063904 and No. 2016R1A2B4016656 ] by the Korean Government . W.K. was supported by the NRF by the Ministry of Science, ICT and Future Planning ( MSIP ) (Grant No. 2015-001948 ).
Publisher Copyright:
© 2017 Elsevier B.V.
Keywords
- Magnetic measurements
- Magnetic phase transition
- Metal–insulator transition (MIT)
- NiSSe
- Non-Fermi-liquid behavior
- ρ(T) measurements