期刊
NANO LETTERS
卷 16, 期 11, 页码 6879-6885出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b02715
关键词
Germanium; quantum dot; heavy hole; g-factor; Luttinger-Kohn Hamiltonian
类别
资金
- EC FP7 ICT project SiSPIN [323841]
- EC FP7 ICT project PAMS [610446]
- ERC [335497]
- Swiss NSF
- [FWF-I-1190-N20]
- Austrian Science Fund (FWF) [I 1190] Funding Source: researchfish
- European Research Council (ERC) [335497] Funding Source: European Research Council (ERC)
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据