Heavy-hole states in germanium hut wires Watzinger, Hannes Kloeffel, Christoph Vukusic, Lada ; https://orcid.org/0000-0003-2424-8636 Rossell, Marta Sessi, Violetta Kukucka, Josip Kirchschlager, Raimund Lausecker, Elisabeth Truhlar, Alisha Glaser, Martin Rastelli, Armando Fuhrer, Andreas Loss, Daniel Katsaros, Georgios ; https://orcid.org/0000-0001-8342-202X ddc:539 Hole spins have gained considerable interest in the past few years due to their potential for fast electrically controlled qubits. Here, we study holes confined in Ge hut wires, a so-far unexplored type of nanostructure. Low-temperature magnetotransport measurements reveal a large anisotropy between the in-plane and out-of-plane g-factors of up to 18. Numerical simulations verify that this large anisotropy originates from a confined wave function of heavy-hole character. A light-hole admixture of less than 1% is estimated for the states of lowest energy, leading to a surprisingly large reduction of the out-of-plane g-factors compared with those for pure heavy holes. Given this tiny light-hole contribution, the spin lifetimes are expected to be very long, even in isotopically nonpurified samples. American Chemical Society 2016 info:eu-repo/semantics/article doc-type:article text http://purl.org/coar/resource_type/c_2df8fbb1 https://research-explorer.ista.ac.at/record/1328 https://research-explorer.ista.ac.at/download/1328/5053 Watzinger H, Kloeffel C, Vukušić L, et al. Heavy-hole states in germanium hut wires. <i>Nano Letters</i>. 2016;16(11):6879-6885. doi:<a href="https://doi.org/10.1021/acs.nanolett.6b02715">10.1021/acs.nanolett.6b02715</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.nanolett.6b02715 info:eu-repo/semantics/altIdentifier/wos/000387625000025 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess