{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Kato T"],"funding":["Natural Science Foundation of Beijing Municipality","Core Research for Evolutional Science and Technology","UVSOR","Natural Science Foundation of China","Grant-in-Aid for Scientific Research","Japan Science Society","Japan Science and Technology Agency (JST), SPRING","National Natural Science Foundation of China","Japan Science and Technology Agency","GP-spin at Tohoku Univeristy","Japan Society for the Promotion of Science","Beijing Natural Science Foundation"],"pagination":["e2309003"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11304331"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["11(29)"],"pubmed_abstract":["Applying lattice strain to thin films, a critical factor to tailor their properties such as stabilizing a structural phase unstable at ambient pressure, generally necessitates heteroepitaxial growth to control the lattice mismatch with substrate. Therefore, while homoepitaxy, the growth of thin film on a substrate made of the same material, is a useful method to fabricate high-quality thin films, its application to studying strain-induced structural phases is limited. Contrary to this general belief, here the quasi-homoepitaxial growth of Cs and Rb thin films is reported with substantial in-plane compressive strain. This is achieved by utilizing the alkali-metal layer existing in bulk crystal of kagome metals AV<sub>3</sub>Sb<sub>5</sub> (A = Cs and Rb) as a structural template. The angle-resolved photoemission spectroscopy measurements reveal the formation of metallic quantum well states and notable thickness-dependent quasiparticle lifetime. Comparison with density functional theory calculations suggests that the obtained thin films crystalize in the face-centered cubic structure, which is typically stable only under high pressure in bulk crystals. These findings provide a useful approach for synthesizing highly strained thin films by quasi-homoepitaxy, and pave the way for investigating many-body interactions in Fermi liquids with tunable dimensionality."],"journal":["Advanced science (Weinheim, Baden-Wurttemberg, Germany)"],"pubmed_title":["Quasi-Homoepitaxial Growth of Highly Strained Alkali-Metal Ultrathin Films on Kagome Superconductors."],"pmcid":["PMC11304331"],"funding_grant_id":["92065109","JPMJCR18T1","23IMS6649","Z210006","JPMJSP2114","22IMS6838","JP21H04435","JP23KJ0099","JP23H01115"],"pubmed_authors":["Li Y","Takahashi T","Sato T","Yao Y","Sugawara K","Tanaka K","Kato T","Nakayama K","Wang Z"],"additional_accession":[]},"is_claimable":false,"name":"Quasi-Homoepitaxial Growth of Highly Strained Alkali-Metal Ultrathin Films on Kagome Superconductors.","description":"Applying lattice strain to thin films, a critical factor to tailor their properties such as stabilizing a structural phase unstable at ambient pressure, generally necessitates heteroepitaxial growth to control the lattice mismatch with substrate. Therefore, while homoepitaxy, the growth of thin film on a substrate made of the same material, is a useful method to fabricate high-quality thin films, its application to studying strain-induced structural phases is limited. Contrary to this general belief, here the quasi-homoepitaxial growth of Cs and Rb thin films is reported with substantial in-plane compressive strain. This is achieved by utilizing the alkali-metal layer existing in bulk crystal of kagome metals AV<sub>3</sub>Sb<sub>5</sub> (A = Cs and Rb) as a structural template. The angle-resolved photoemission spectroscopy measurements reveal the formation of metallic quantum well states and notable thickness-dependent quasiparticle lifetime. Comparison with density functional theory calculations suggests that the obtained thin films crystalize in the face-centered cubic structure, which is typically stable only under high pressure in bulk crystals. These findings provide a useful approach for synthesizing highly strained thin films by quasi-homoepitaxy, and pave the way for investigating many-body interactions in Fermi liquids with tunable dimensionality.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Aug","modification":"2025-04-22T21:44:42.057Z","creation":"2025-04-06T03:45:29.485Z"},"accession":"S-EPMC11304331","cross_references":{"pubmed":["38828764"],"doi":["10.1002/advs.202309003"]}}