A hybrid optoelectronic Mott insulator
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...
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Veröffentlicht in: | Applied physics letters 2021-04, Vol.118 (14) |
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creator | Navarro, H. del Valle, J. Kalcheim, Y. Vargas, N. M. Adda, C. Lee, M.-H. Lapa, P. Rivera-Calzada, A. Zaluzhnyy, I. A. Qiu, E. Shpyrko, O. Rozenberg, M. Frano, A. Schuller, Ivan K. |
description | 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. |
doi_str_mv | 10.1063/5.0044066 |
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M. ; Adda, C. ; Lee, M.-H. ; Lapa, P. ; Rivera-Calzada, A. ; Zaluzhnyy, I. A. ; Qiu, E. ; Shpyrko, O. ; Rozenberg, M. ; Frano, A. ; Schuller, Ivan K.</creator><creatorcontrib>Navarro, H. ; del Valle, J. ; Kalcheim, Y. ; Vargas, N. M. ; Adda, C. ; Lee, M.-H. ; Lapa, P. ; Rivera-Calzada, A. ; Zaluzhnyy, I. A. ; Qiu, E. ; Shpyrko, O. ; Rozenberg, M. ; Frano, A. ; Schuller, Ivan K.</creatorcontrib><description>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. 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M.</creatorcontrib><creatorcontrib>Adda, C.</creatorcontrib><creatorcontrib>Lee, M.-H.</creatorcontrib><creatorcontrib>Lapa, P.</creatorcontrib><creatorcontrib>Rivera-Calzada, A.</creatorcontrib><creatorcontrib>Zaluzhnyy, I. A.</creatorcontrib><creatorcontrib>Qiu, E.</creatorcontrib><creatorcontrib>Shpyrko, O.</creatorcontrib><creatorcontrib>Rozenberg, M.</creatorcontrib><creatorcontrib>Frano, A.</creatorcontrib><creatorcontrib>Schuller, Ivan K.</creatorcontrib><title>A hybrid optoelectronic Mott insulator</title><title>Applied physics letters</title><description>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. 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subjects | Applied physics Condensed Matter Condensed matter physics Correlation Degrees of freedom Electric fields Heterostructures Insulators Material properties Metal-insulator transition Occupancy Optoelectronics Physics Stability Stimuli |
title | A hybrid optoelectronic Mott insulator |
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