article published yes Hannes Watzinger author 35DF8E50-F248-11E8-B48F-1D18A9856A87 Christoph Kloeffel author Lada Vukusic author 31E9F056-F248-11E8-B48F-1D18A9856A870000-0003-2424-8636 Marta Rossell author Violetta Sessi author Josip Kukucka author 3F5D8856-F248-11E8-B48F-1D18A9856A87 Raimund Kirchschlager author Elisabeth Lausecker author 33662F76-F248-11E8-B48F-1D18A9856A87 Alisha Truhlar author 49CBC780-F248-11E8-B48F-1D18A9856A87 Martin Glaser author Armando Rastelli author Andreas Fuhrer author Daniel Loss author Georgios Katsaros author 38DB5788-F248-11E8-B48F-1D18A9856A870000-0001-8342-202X GeKa department Towards Spin qubits and Majorana fermions in Germanium self assembled hut-wires project 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. https://research-explorer.ista.ac.at/download/1328/5053/IST-2016-664-v1+1_acs.nanolett.6b02715.pdf application/pdfno American Chemical Society2016 eng 00038762500002510.1021/acs.nanolett.6b02715 16116879 - 6885 https://research-explorer.ista.ac.at/record/7977 https://research-explorer.ista.ac.at/record/7996 Watzinger, Hannes, et al. “Heavy-Hole States in Germanium Hut Wires.” <i>Nano Letters</i>, vol. 16, no. 11, American Chemical Society, 2016, pp. 6879–85, doi:<a href="https://doi.org/10.1021/acs.nanolett.6b02715">10.1021/acs.nanolett.6b02715</a>. 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> H. Watzinger <i>et al.</i>, “Heavy-hole states in germanium hut wires,” <i>Nano Letters</i>, vol. 16, no. 11. American Chemical Society, pp. 6879–6885, 2016. Watzinger, Hannes, Christoph Kloeffel, Lada Vukušić, Marta Rossell, Violetta Sessi, Josip Kukucka, Raimund Kirchschlager, et al. “Heavy-Hole States in Germanium Hut Wires.” <i>Nano Letters</i>. American Chemical Society, 2016. <a href="https://doi.org/10.1021/acs.nanolett.6b02715">https://doi.org/10.1021/acs.nanolett.6b02715</a>. Watzinger, H., Kloeffel, C., Vukušić, L., Rossell, M., Sessi, V., Kukucka, J., … Katsaros, G. (2016). Heavy-hole states in germanium hut wires. <i>Nano Letters</i>. American Chemical Society. <a href="https://doi.org/10.1021/acs.nanolett.6b02715">https://doi.org/10.1021/acs.nanolett.6b02715</a> Watzinger H, Kloeffel C, Vukušić L, Rossell M, Sessi V, Kukucka J, Kirchschlager R, Lausecker E, Truhlar A, Glaser M, Rastelli A, Fuhrer A, Loss D, Katsaros G. 2016. Heavy-hole states in germanium hut wires. Nano Letters. 16(11), 6879–6885. H. Watzinger, C. Kloeffel, L. Vukušić, M. Rossell, V. Sessi, J. Kukucka, R. Kirchschlager, E. Lausecker, A. Truhlar, M. Glaser, A. Rastelli, A. Fuhrer, D. Loss, G. Katsaros, Nano Letters 16 (2016) 6879–6885. 13282018-12-11T11:51:24Z2025-09-22T08:24:38Z