Pressure-induced metallization of the Mott insulator FeXMn1−XS system
Source abstract
Abstract
Abstract Electrical resistivity of the Fe X Mn 1−X S (0 ≤ X ≤ 0.29) single crystals based on the Mott insulator α-MnS is experimentally studied in the temperature range of 2–300 K at ambient pressure (P = 0) and at high (up to 30 GPa) hydrostatic pressures for x = 0.12. The electron subsystem of Fe X Mn 1−X S undergoes insulator-to-metal transitions indicated by a resistivity drop by a factor of 10 6 with an increase in the chemical pressure (X) due to the cation substitution under ambient conditions and at the hydrostatic pressure (P C = 27 ± 5 GPa) for x = 0.12. The results obtained show that the hydrostatic pressure - and cation-substitution induced insulator-to-metal transitions in the α-MnS-based Mott compounds have similar mechanisms. The dependence of the critical hydrostatic pressure P C on the Fe content in Fe X Mn 1−X S is established.
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Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Iron-based superconductors research · Advanced Condensed Matter Physics
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References (24)
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