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120 papers · 1 filter
On the Nature of Tellurium Atomic Helices
George Kirczenow
A theoreticsal study of single, double and triple hydrogen-terminated chains of tellurium atoms is presented. Surprisingly, H-terminated single chains with 3 Te atoms per unit cell…
Energy landscape of noncollinear exchange coupled magnetic multilayers
George Lertzman-Lepofsky, Afan Terko, Sabri Koraltan +3
We conduct an exploration of the energy landscape of two coupled ferromagnetic layers with perpendicular-to-plane uniaxial anisotropy using finite-element micromagnetic simulations…
Impact of electrostatic crosstalk on spin qubits in dense CMOS quantum dot arrays
Jesus D. Cifuentes, Tuomo Tanttu, Paul Steinacker +20
Quantum processors based on integrated nanoscale silicon spin qubits are a promising platform for highly scalable quantum computation. Current CMOS spin qubit processors consist of…
Improved Single-Shot Qubit Readout Using Twin RF-SET Charge Correlations
Santiago Serrano, MengKe Feng, Wee Han Lim +11
High fidelity qubit readout is critical in order to obtain the thresholds needed to implement quantum error correction protocols and achieve fault-tolerant quantum computing. Large…
Sublattice-enriched tunability of bound states in second-order topological insulators and superconductors
Di Zhu, Majid Kheirkhah, Zhongbo Yan
Bound states at sharp corners have been widely viewed as the hallmark of two-dimensional second-order topological insulators and superconductors. In this work, we show that the exi…
Strong Spin Filtering by Silicon Nanoparticles with Adsorbed Bismuth Atom Clusters: Role of Symmetry and Electrostatic Control of the Direction of the Spin Polarization
Alireza Saffarzadeh, George Kirczenow
We present a theoretical study, based on density functional theory and tight binding modeling, of the electronic structure and spin transport properties of silicon nanoparticles wi…