Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.096403
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Funding
- Japan Society for the Promotion of Science [22740197]
- Ministry of Education, Culture, Sports, Science, and Technology in Japan [20110005]
- Grants-in-Aid for Scientific Research [22740197, 26248015, 25247049, 25810032] Funding Source: KAKEN
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Ultrafast photoinduced transitions of a one-dimensional Mott insulator into two distinct electronic phases, metal and charge-density-wave (CDW) state, were achieved in a bromine-bridged Pd-chain compound [Pd(en)(2)Br](C-5-Y)(2)H2O (en = ethylenediamine and C-5-Y = dialkylsulfosuccinate), by selecting the photon energy of a femtosecond excitation pulse. For the resonant excitation of the Mott-gap transition, excitonic states are generated and converted to one-dimensional CDW domains. For the high-erenergy excitation, free electron and hole carriers are produced, giving rise to a transition of the Mott insulator to a metal. Such selectivity in photoconversions by the choice of initial photoexcited states opens a new possibility for the developments of advanced optical switching and memory functions.
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