RT Journal Article
T1 A hybrid optoelectronic Mott insulator
A1 Navarro, H.
A1 Valle, J. del
A1 Kalcheim, Y.
A1 Vargas, N. M.
A1 Adda, C.
A1 Lee, Lee, M. -H.
A1 Lapa, P.
A1 Rivera Calzada, Alberto Carlos
A1 Zaluzhnyy, I. A.
A1 Qiu, E.
A1 Shpyrko, O.
A1 Rozenberg, M.
A1 Frano, A.
A1 Schuller, Ivan K.
AB The coupling of electronic degrees of freedom in materials to create "hybridized functionalities" is a holy grail of modern condensed matter physics that may produce versatile mechanisms of control. Correlated electron systems often exhibit coupled degrees of freedom with a high degree of tunability which sometimes lead to hybridized functionalities based on external stimuli. However, the mechanisms of tunability and the sensitivity to external stimuli are determined by intrinsic material properties which are not always controllable. A Mott metal-insulator transition (MIT) is technologically attractive due to the large changes in resistance, tunable by doping, strain, electric fields, and orbital occupancy but not, in and of itself, controllable with light. Here, an alternate approach is presented to produce optical functionalities using a properly engineered photoconductor/strongly correlated hybrid heterostructure. This approach combines a photoconductor, which does not exhibit an MIT, with a strongly correlated oxide, which is not photoconducting. Due to the intimate proximity between the two materials, the heterostructure exhibits giant volatile and nonvolatile, photoinduced resistivity changes with substantial shifts in the MIT transition temperatures. This approach can be extended to other judicious combinations of strongly correlated materials.
PB American Institute of Physics
SN 0003-6951
YR 2021
FD 2021-04-05
LK https://hdl.handle.net/20.500.14352/8093
UL https://hdl.handle.net/20.500.14352/8093
LA eng
NO ©2021 American Institute of PhysicsWe thank R. C. Dynes, A. Hoffmann, J. A. Schuller, and Y. Takamura for useful conversations. We thank Francisco Schuller for supplying the Au for the electrodes. This collaborative work was supported as part of the "Quantum Materials for Energy Efficient Neuromorphic Computing" (Q-MEEN-C), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under the Award No. DE-SC0019273. A.R.-C. thanks the economic support of the mobility research program Salvador de Madariaga from Spanish Ministry of Science.
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 4 may 2024