Single-crystalline-level properties of ultrathin SrRuO3 flexible membranes with wide and clean surface
Source abstract
Abstract
Abstract Transferring single-crystalline (SC) membranes to flexible substrates has been increasingly studied, enabling emerging functionality and enhanced performance of various devices. A commonly used support-assisted transfer process inevitably leaves dirty residue on material surfaces, limiting the further development of surface-related applications. Here, we scale down the thickness of flexible SC SrRuO3(SRO) membranes to 15 nm with a clean surface area of 2.5 × 2.5 mm2. This is accomplished by making the polyethylene terephthalate (PET) substrate surface hydrophilic via oxygen plasma treatment, thereby reducing the surface tension. The ultrathin, clean, wide, and flexible SC SRO membranes guarantee a high transmittance of up to 60%, a low resistivity of 10−4−10−3Ω cm at room temperature, and band ferromagnetism below 150 K with a high magnetic moment of ~0.5μB/Ru at 10 K. The SC-level properties of our SRO membranes imply their potential use in state-of-the-art platforms for next-generation electronics and energy devices.
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Research context
OpenAlex topics: Advanced Condensed Matter Physics · Electronic and Structural Properties of Oxides · Multiferroics and related materials
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References (30)
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1. Dong, G. et al. Super-elastic ferroelectric single-crystal membrane with continuous electric dipole rotation. Science 366, 475–479 (2019).10.1126/science.aay7221 ↗
2. Chen, Z. et al. Freestanding crystalline YBa2Cu3O7−x heterostructure membranes. Phys. Rev. Mater. 3, 060801 (2019).10.1103/PhysRevMaterials.3.060801 ↗
3. An, F. et al. Highly flexible and twistable freestanding single crystalline magnetite film with robust magnetism. Adv. Funct. Mater. 30, 2003495 (2020).10.1002/adfm.202003495 ↗
4. Lu, D., Crossley, S., Xu, R., Hikita, Y. & Hwang, H. Y. Freestanding oxide ferroelectric tunnel junction memories transferred onto silicon. Nano Lett. 19, 3999–4003 (2019).10.1021/acs.nanolett.9b01327 ↗
5. Luo, Z.-D., Peters, J. J. P., Sanchez, A. M. & Alexe, M. Flexible memristors based on single-crystalline ferroelectric tunnel junctions. ACS Appl. Mater. Interfaces 11, 23313–23319 (2019).10.1021/acsami.9b04738 ↗
6. Li, R. et al. Preparation and characterization of a flexible ferroelectric tunnel junction. Appl. Phys. Lett. 116, 222904 (2020).10.1063/5.0006638 ↗
7. Hong, S. S. et al. Extreme tensile strain states in La0.7Ca0.3MnO3 membranes. Science 368, 71–76 (2020).10.1126/science.aax9753 ↗
8. Ji, D. et al. Freestanding crystalline oxide perovskites down to the monolayer limit. Nature 570, 87–90 (2019).10.1038/s41586-019-1255-7 ↗
9. Lu, D. et al. Synthesis of freestanding single-crystal perovskite films and heterostructures by etching of sacrificial water-soluble layers. Nat. Mater. 15, 1255–1260 (2016).10.1038/nmat4749 ↗
10. Kim, Y. et al. Remote epitaxy through graphene enables two-dimensional material-based layer transfer. Nature 544, 340–343 (2017).10.1038/nature22053 ↗
11. Kum, H. S. et al. Heterogeneous integration of single-crystalline complex-oxide membranes. Nature 578, 75–81 (2020).10.1038/s41586-020-1939-z ↗
12. Wang, L. et al. One-dimensional electrical contact to a two-dimensional material. Science 342, 614–617 (2013).10.1126/science.1244358 ↗
13. Cao, Y. et al. Unconventional superconductivity in magic-angle graphene superlattices. Nature 556, 43–50 (2018).10.1038/nature26160 ↗
14. Sharpe, A. L. et al. Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene. Science 365, 605–608 (2019).10.1126/science.aaw3780 ↗
15. Ohring, M. Materials Science of Thin Films. (Academic Press, Hoboken, United States, 2002).
16. Fox, M. Optical Properties of Solids. (Oxford University Press, Oxford, United Kingdom, 2010).
17. Gu, K. et al. Simple method to obtain large‐size single‐crystalline oxide sheets. Adv. Funct. Mater. 30, 2001236 (2020).10.1002/adfm.202001236 ↗
18. Paskiewicz, D. M., Sichel-Tissot, R., Karapetrova, E., Stan, L. & Fong, D. D. Single-crystalline SrRuO3 nanomembranes: A platform for flexible oxide electronics. Nano Lett. 16, 534–542 (2016).10.1021/acs.nanolett.5b04176 ↗
19. Li, X. et al. Epitaxial liftoff of wafer-scale VO2 nanomembranes for flexible, ultrasensitive tactile sensors. Adv. Mater. Technol. 4, 1800695 (2019).10.1002/admt.201800695 ↗
20. Inagaki, N., Narushim, K., Tuchida, N. & Miyazaki, K. Surface characterization of plasma-modified poly(ethylene terephthalate) film surfaces. J. Polym. Sci. Pt. B-Polym. Phys. 42, 3727–3740 (2004).10.1002/polb.20234 ↗
21. Junkar, I., Vesel, A., Cvelbar, U., Mozetič, M. & Strnad, S. Influence of oxygen and nitrogen plasma treatment on polyethylene terephthalate (PET) polymers. Vacuum 84, 83–85 (2009).10.1016/j.vacuum.2009.04.011 ↗
22. Shrestha, S. et al. Nanometer-thick Sr2IrO4 freestanding films for flexible electronics. ACS Appl. Nano Mater. 3, 6310–6315 (2020).10.1021/acsanm.0c01351 ↗
23. Thompson, J. et al. Enhanced metallic properties of SrRuO3 thin films via kinetically controlled pulsed laser epitaxy. Appl. Phys. Lett. 109, 161902 (2016).10.1063/1.4964882 ↗
24. Chang, Y. J. et al. Fundamental thickness limit of itinerant ferromagnetic SrRuO3 thin films. Phys. Rev. Lett. 103, 057201 (2009).10.1103/PhysRevLett.103.057201 ↗
25. Xia, J., Siemons, W., Koster, G., Beasley, M. R. & Kapitulnik, A. Critical thickness for itinerant ferromagnetism in ultrathin films of SrRuO3. Phys. Rev. B 79, 140407 (2009).10.1103/PhysRevB.79.140407 ↗
26. Lee, S. A. et al. Enhanced electrocatalytic activity via phase transitions in strongly correlated SrRuO3 thin films. Energy Environ. Sci. 10, 924–930 (2017).10.1039/C7EE00628D ↗
27. Wang, L. et al. Ferroelectrically tunable magnetic skyrmions in ultrathin oxide heterostructures. Nat. Mater. 17, 1087–1094 (2018).10.1038/s41563-018-0204-4 ↗
28. Fang, Z. et al. The anomalous Hall effect and magnetic monopoles in momentum space. Science 302, 92–95 (2003).10.1126/science.1089408 ↗
29. Ioffe, A. F. & Regel, A. R. Non-crystalline, amorphous and liquid electronic semiconductors. Prog. Semicond. 4, 237–291 (1960).
30. Blundell, S. Magnetism in Condensed Matter. (Oxford University Press, Oxford, United Kingdom, 2001).10.1093/oso/9780198505921.001.0001 ↗