Magnetic Field Evolution of Spin Blockade in Ge/Si Nanowire Double Quantum Dots

Abstract

We perform transport measurements on double quantum dots defined in Ge/Si core/shell nanowires and focus on Pauli spin blockade in the regime where tens of holes occupy each dot. We identify spin blockade through the magnetic field dependence of leakage current. We find both a dip and a peak in the leakage current at zero field. We analyze this behavior in terms of the quantum dot parameters such as coupling to the leads, interdot tunnel coupling as well as spin-orbit interaction. We find a lower bound for spin-orbit interaction with $l_{\mathrm{so}}=500$ nm. We also extract large and anisotropic effective Land$\acute{\mathrm{e}}$ g-factors, with larger g-factors in the direction perpendicular to the nanowire axis in agreement with previous studies and experiments but with larger values reported here.

References in corpus (35)

• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Helical liquids and Majorana bound states in quantum wires
• Spins in few-electron quantum dots
• Coherent control of a single electron spin with electric fields
• Spin-orbit qubit in a semiconductor nanowire
• Control and Detection of Singlet-Triplet Mixing in a Random Nuclear Field
• Triplet-Singlet Spin Relaxation via Nuclei in a Double Quantum Dot
• One-Dimensional Hole Gas in Germanium/Silicon Nanowire Heterostructures
• Double quantum dot with integrated charge sensor based on Ge/Si heterostructure nanowires
• Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot
• Spectroscopy of spin-orbit quantum bits in indium antimonide nanowires
• Singlet-triplet spin blockade and charge sensing in a few-electron double quantum dot
• Spin Relaxation in Ge/Si Core-Shell Nanowire Qubits
• Strong Spin-Orbit Interaction and Helical Hole States in Ge/Si Nanowires
• Electron-nuclear interaction in 13C nanotube double quantum dots
• Quantum Information is Physical
• Suppression of spin relaxation in an InAs nanowire double quantum dot
• Pauli-Spin-Blockade Transport through a Silicon Double Quantum Dot
• Pauli Spin Blockade in the Presence of Strong Spin-Orbit Coupling
• Valley-spin blockade and spin resonance in carbon nanotubes
• Electron Transport in Double Quantum Dot governed by Nuclear Magnetic Field
• Disentangling the effects of spin-orbit and hyperfine interactions on spin blockade
• Strong and Tunable Spin-Orbit Coupling of One-Dimensional Holes in Ge/Si Core/Shell Nanowires
• Pauli Spin Blockade of Heavy Holes in a Silicon Double Quantum Dot
• Electrical control of g-factors in a few-hole silicon nanowire MOSFET
• Hole Spin Coherence in a Ge/Si Heterostructure Nanowire
• Majorana Fermions in Ge/Si Hole Nanowires
• Spin state mixing in InAs double quantum dots
• Tunable g factor and phonon-mediated hole spin relaxation in Ge/Si nanowire quantum dots
• Antilocalization of Coulomb Blockade in a Ge-Si Nanowire
• Electric-field dependent g-factor anisotropy in Ge-Si core-shell nanowire quantum dots
• Magnetic field dependence of Pauli spin blockade: a window into the sources of spin relaxation in silicon quantum dots
• Leakage-current lineshapes from inelastic cotunneling in the Pauli spin blockade regime
• Pauli Blockade in a Few-Hole PMOS Double Quantum Dot limited by Spin-Orbit Interaction

Cited by in corpus (27)

• The germanium quantum information route
• Ge hole spin qubit
• Germanium quantum well Josephson field effect transistors and interferometers
• Strong spin-orbit interaction and $g$-factor renormalization of hole spins in Ge/Si nanowire quantum dots
• Hole spin resonance and spin-orbit coupling in a silicon metal-oxide-semiconductor field-effect transistor
• Single, double, and triple quantum dots in Ge/Si nanowires
• Spin blockade as a probe of Zeeman interactions in hole quantum dots
• Multiple Andreev reflections and Shapiro steps in a Ge-Si nanowire Josephson junction
• Anisotropic g-Factor and Spin-Orbit Field in a Ge Hut Wire Double Quantum Dot
• Gate-Tunable Spin-Orbit Coupling in a Germanium Hole Double Quantum Dot
• Josephson effect in a few-hole quantum dot
• Classification and magic magnetic-field directions for spin-orbit-coupled double quantum dots
• Ballistic quantum transport through Ge/Si core/shell nanowires
• Highly tunable quadruple quantum dot in a narrow bandgap semiconductor InAs nanowire
• Hole spin in tunable Ge hut wire double quantum dot
• Electrical operation of hole spin qubits in planar MOS silicon quantum dots
• Cryogenic hyperabrupt strontium titanate varactors for sensitive reflectometry of quantum dots
• Transient effects in double quantum dot sandwiched laterally between superconducting and metallic leads
• Hole weak anti-localization in a strained-Ge surface quantum well
• Subgap dynamics of double quantum dot coupled between superconducting and normal leads
• Line Shapes of Electric Dipole Spin Resonance in Pauli Spin Blockade
• Low-energy subband wave-functions and effective $g$-factor of one-dimensional hole gas
• Optical intersubband properties of a core-shell semiconductor-topological insulator quantum dot described by $\theta$-Electrodynamics
• Quantification of the heavy-hole--light-hole mixing in two-dimensional hole gases
• Pauli spin blockade at room temperature in double-quantum-dot tunneling through individual deep dopants in silicon
• Charge detection of a quantum dot under different tunneling barrier symmetries and bias voltages
• Interplay of Pauli blockade with electron-photon coupling in quantum dots