Charge-transfer gap closure in transition-metal halides under pressure | Zendy

A.L. Chen | Zendy; P.Y. Yu | Zendy

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Charge-transfer gap closure in transition-metal halides under pressure

Author(s) -

A.L. Chen,

P.Y. Yu

Publication year - 1995

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/69161

Subject(s) - halide , insulator (electricity) , metal , closure (psychology) , charge (physics) , materials science , electrical resistivity and conductivity , metal–insulator transition , transition metal , metal halides , chemistry , condensed matter physics , atomic physics , inorganic chemistry , optoelectronics , metallurgy , electrical engineering , physics , market economy , biochemistry , quantum mechanics , economics , catalysis , engineering

Insulator-to-metal transition induced by pressure has been studied in three transition metal iodides: NiI{sub 2}, CoI{sub 2} and FeI{sub 2} using optical absorption and resistivity measurements at room temperature. Comparisons between the results obtained by these two techniques suggested that the closure of the charge-transfer gap is the principal mechanism responsible for the insulator-to-metal transition in these materials

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