2026-04-30T14:07:55Z https://archive.materialscloud.org/oai2d

oai:materialscloud.org:vz6hg-tvd13 2026-04-13T14:05:27Z openaire_data community-mcarchive

Bonacci, Miki Bonacci, Miki Schüler, Michael Colonna, Nicola Marzari, Nicola 2026-04-13 <p>Germanium–silicon–germanium (Ge/Si<sub>x</sub>Ge<sub>1-x</sub>) heterostructures have emerged as a prominent platform for high-mobility electronic devices and hole-spin–based quantum technologies. In this work, we present an <em>ab initio</em> study of strained germanium, demonstrating that biaxial compressive strain in a Ge quantum well strongly alters the valence-band structure. Specifically, the strain lifts the heavy-hole/light-hole degeneracy and modifies the effective masses (significantly enhances hole mobility). Our findings offer a comprehensive theoretical description of the combined effects of strain and quantum confinement on the valence bands of Ge quantum wells, providing a solid foundation for predictive modeling of Ge-based high-mobility electronics and hole-spin qubits.</p> application/zip text/plain application/json text/x-python application/octet-stream text/x-python text/plain https://doi.org/10.24435/materialscloud:yg-hd oai:materialscloud.org:vz6hg-tvd13 mcid:2026.75 eng Materials Cloud https://doi.org/10.48550/arXiv.2603.18753 https://renkulab.io/p/aiida/materials-cloud-archive/sessions/01JZAQ1T34GEE1S98BV1300FXY/start?archive_url=https://archive.materialscloud.org/api/records/vz6hg-tvd13/files/export_eos_Ge.aiida/content https://archive.materialscloud.org/communities/mcarchive https://doi.org/10.24435/materialscloud:93-t0 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode DFT Wannier interpolation Wannier90 Quantum ESPRESSO Strained Germanium tight-binding quantum confinement AiiDA Ab initio study of strain and quantum confinement shaping the valence-band structure of Ge quantum wells info:eu-repo/semantics/other