Comparing Thickness and Doping-Induced Effects on the Normal States of Infinite-Layer Electron-Doped Cuprates: Is There Anything to Learn?
We grew Sr<sub>1-x</sub>La<sub>x</sub>CuO<sub>2</sub> thin films and SrCuO<sub>2</sub>/Sr<sub>0.9</sub>La<sub>0.1</sub>CuO<sub>2</sub>/SrCuO<sub>2</sub> trilayers by reflection high-energy diffraction-cal...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/7/1092 |
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| author | Chiara Sacco Alice Galdi Francesco Romeo Nunzia Coppola Pasquale Orgiani Haofei I. Wei Kyle M. Shen Darrell G. Schlom Luigi Maritato |
| author_facet | Chiara Sacco Alice Galdi Francesco Romeo Nunzia Coppola Pasquale Orgiani Haofei I. Wei Kyle M. Shen Darrell G. Schlom Luigi Maritato |
| author_sort | Chiara Sacco |
| collection | DOAJ |
| description | We grew Sr<sub>1-x</sub>La<sub>x</sub>CuO<sub>2</sub> thin films and SrCuO<sub>2</sub>/Sr<sub>0.9</sub>La<sub>0.1</sub>CuO<sub>2</sub>/SrCuO<sub>2</sub> trilayers by reflection high-energy diffraction-calibrated layer-by-layer molecular beam epitaxy, to study their electrical transport properties as a function of the doping and thickness of the central Sr<sub>0.9</sub>La<sub>0.1</sub>CuO<sub>2</sub> layer. For the trilayer samples, as already observed in underdoped SLCO films, the electrical resistivity versus temperature curves as a function of the central layer thickness show, for thicknesses thinner than 20 unit cells, sudden upturns in the low temperature range with the possibility for identifying, in the normal state, the <i>T*</i> and a <i>T**</i> temperatures, respectively, separating high-temperature linear behavior and low-temperature quadratic dependence. By plotting the <i>T*</i> and <i>T**</i> values as a function of T<sub>C</sub><sup>onset</sup> for both the thin films and the trilayers, the data fall on the same curves. This result suggests that, for the investigated trilayers, the superconducting critical temperature is the important parameter able to describe the normal state properties and that, in the limit of very thin central layers, such properties are mainly influenced by the modification of the energy band structure and not by interface-related disorder. |
| first_indexed | 2024-03-09T11:35:19Z |
| format | Article |
| id | doaj.art-c5d76dc55287485eac855347b8eace9f |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T11:35:19Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-c5d76dc55287485eac855347b8eace9f2023-11-30T23:44:19ZengMDPI AGNanomaterials2079-49912022-03-01127109210.3390/nano12071092Comparing Thickness and Doping-Induced Effects on the Normal States of Infinite-Layer Electron-Doped Cuprates: Is There Anything to Learn?Chiara Sacco0Alice Galdi1Francesco Romeo2Nunzia Coppola3Pasquale Orgiani4Haofei I. Wei5Kyle M. Shen6Darrell G. Schlom7Luigi Maritato8DIIN, Università degli Studi di Salerno, 84084 Fisciano, ItalyCLASSE, Cornell University, Ithaca, NY 14583, USADipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, 84084 Fisciano, ItalyDIIN, Università degli Studi di Salerno, 84084 Fisciano, ItalyTASC Laboratory, Istituto Officina dei Materiali (IOM)-CNR, Area Science Park, S.S. 14, Km 163.5, 34149 Trieste, ItalyDepartment of Physics, Cornell University, Ithaca, NY 14853, USADepartment of Physics, Cornell University, Ithaca, NY 14853, USAKavli Institute at Cornell for Nanoscale Science, Ithaca, NY 14853, USADIIN, Università degli Studi di Salerno, 84084 Fisciano, ItalyWe grew Sr<sub>1-x</sub>La<sub>x</sub>CuO<sub>2</sub> thin films and SrCuO<sub>2</sub>/Sr<sub>0.9</sub>La<sub>0.1</sub>CuO<sub>2</sub>/SrCuO<sub>2</sub> trilayers by reflection high-energy diffraction-calibrated layer-by-layer molecular beam epitaxy, to study their electrical transport properties as a function of the doping and thickness of the central Sr<sub>0.9</sub>La<sub>0.1</sub>CuO<sub>2</sub> layer. For the trilayer samples, as already observed in underdoped SLCO films, the electrical resistivity versus temperature curves as a function of the central layer thickness show, for thicknesses thinner than 20 unit cells, sudden upturns in the low temperature range with the possibility for identifying, in the normal state, the <i>T*</i> and a <i>T**</i> temperatures, respectively, separating high-temperature linear behavior and low-temperature quadratic dependence. By plotting the <i>T*</i> and <i>T**</i> values as a function of T<sub>C</sub><sup>onset</sup> for both the thin films and the trilayers, the data fall on the same curves. This result suggests that, for the investigated trilayers, the superconducting critical temperature is the important parameter able to describe the normal state properties and that, in the limit of very thin central layers, such properties are mainly influenced by the modification of the energy band structure and not by interface-related disorder.https://www.mdpi.com/2079-4991/12/7/1092infinite layerelectron-doped cupratesnormal-state properties |
| spellingShingle | Chiara Sacco Alice Galdi Francesco Romeo Nunzia Coppola Pasquale Orgiani Haofei I. Wei Kyle M. Shen Darrell G. Schlom Luigi Maritato Comparing Thickness and Doping-Induced Effects on the Normal States of Infinite-Layer Electron-Doped Cuprates: Is There Anything to Learn? Nanomaterials infinite layer electron-doped cuprates normal-state properties |
| title | Comparing Thickness and Doping-Induced Effects on the Normal States of Infinite-Layer Electron-Doped Cuprates: Is There Anything to Learn? |
| title_full | Comparing Thickness and Doping-Induced Effects on the Normal States of Infinite-Layer Electron-Doped Cuprates: Is There Anything to Learn? |
| title_fullStr | Comparing Thickness and Doping-Induced Effects on the Normal States of Infinite-Layer Electron-Doped Cuprates: Is There Anything to Learn? |
| title_full_unstemmed | Comparing Thickness and Doping-Induced Effects on the Normal States of Infinite-Layer Electron-Doped Cuprates: Is There Anything to Learn? |
| title_short | Comparing Thickness and Doping-Induced Effects on the Normal States of Infinite-Layer Electron-Doped Cuprates: Is There Anything to Learn? |
| title_sort | comparing thickness and doping induced effects on the normal states of infinite layer electron doped cuprates is there anything to learn |
| topic | infinite layer electron-doped cuprates normal-state properties |
| url | https://www.mdpi.com/2079-4991/12/7/1092 |
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