TY - JOUR
T1 - Pressure-induced metal–insulator transitions in chalcogenide NiS2-xSex
AU - Hussain, Tayyaba
AU - Oh, Myeong jun
AU - Nauman, Muhammad
AU - Jo, Younjung
AU - Han, Garam
AU - Kim, Changyoung
AU - Kang, Woun
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - 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.
AB - 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.
KW - Magnetic measurements
KW - Magnetic phase transition
KW - Metal–insulator transition (MIT)
KW - NiSSe
KW - Non-Fermi-liquid behavior
KW - ρ(T) measurements
UR - http://www.scopus.com/inward/record.url?scp=85044727589&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2017.11.032
DO - 10.1016/j.physb.2017.11.032
M3 - Article
AN - SCOPUS:85044727589
SN - 0921-4526
VL - 536
SP - 235
EP - 238
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
ER -