C. H. L. Quay
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View article: Imaging the Quantum Capacitance of Strained MoS2 Monolayers by Electrostatic Force Microscopy
Imaging the Quantum Capacitance of Strained MoS2 Monolayers by Electrostatic Force Microscopy Open
We implemented radio frequency-assisted electrostatic force microscopy (RF-EFM) to investigate the electric field response of biaxially strained molybdenum disulfide (MoS2) monolayers (MLs) in the form of mesoscopic bubbles, produced via h…
View article: Gate-assisted phase fluctuations in all-metallic Josephson junctions
Gate-assisted phase fluctuations in all-metallic Josephson junctions Open
The discovery that a gate electrode suppresses the supercurrent in purely\nmetallic systems is missing a complete physical understanding of the mechanisms\nat play. We here study the origin of this reduction in a Superconductor-Normal\nmet…
View article: Gate-Assisted Phase Fluctuations in All-Metallic Josephson Junctions
Gate-Assisted Phase Fluctuations in All-Metallic Josephson Junctions Open
The discovery that a gate electrode suppresses the supercurrent in purely metallic systems is missing a complete physical understanding of the mechanisms at play. We here study the origin of this reduction in a Superconductor-Normal metal-…
View article: Tunneling spectroscopy of few-monolayer NbSe$_2$ in high magnetic field: Ising protection and triplet superconductivity
Tunneling spectroscopy of few-monolayer NbSe$_2$ in high magnetic field: Ising protection and triplet superconductivity Open
In conventional Bardeen-Cooper-Scrieffer (BCS) superconductors, Cooper pairs of electrons of opposite spin (i.e. singlet structure) form the ground state. Equal spin triplet pairs (ESTPs), as in superfluid $^3$He, are of great interest for…
View article: Evidence for spin-dependent energy transport in a superconductor
Evidence for spin-dependent energy transport in a superconductor Open
In ferromagnetic materials, spin up and down electrons can carry different heat currents. This spin-dependent energy excitation mode (‘spin energy mode’) occurs only when spin up and down energy distribution functions are different. In sup…
View article: Evidence for spin-dependent energy transport in a superconductor
Evidence for spin-dependent energy transport in a superconductor Open
In the spin energy excitation mode of normal metals and superconductors, spin up and down electrons (or quasiparticles) carry different heat currents. This mode occurs only when spin up and down energy distribution functions are non-identi…
View article: Zeeman Tunability of Andreev Bound States in van der Waals Tunnel Barriers
Zeeman Tunability of Andreev Bound States in van der Waals Tunnel Barriers Open
Quantum dots proximity coupled to superconductors are attractive research platforms due to the intricate interplay between the single-electron nature of the dot and the many body nature of the superconducting state. These have been studied…
View article: Tunneling into the Vortex State of NbSe<sub>2</sub> with van der Waals Junctions
Tunneling into the Vortex State of NbSe<sub>2</sub> with van der Waals Junctions Open
We have performed device-based tunneling spectroscopy of NbSe2 in the vortex state with a magnetic field applied both parallel and perpendicular to the a- b plane. Our devices consist of layered semiconductors placed on top of exfoliated N…
View article: Hard superconducting gap and vortex-state spectroscopy in NbSe$_2$ van der Waals tunnel junctions
Hard superconducting gap and vortex-state spectroscopy in NbSe$_2$ van der Waals tunnel junctions Open
Device-based tunnel spectroscopy of superconductors was first performed by Giaever, whose seminal work provided clear evidence for the spectral gap in the density of states (DOS) predicted by the Bardeen-Cooper-Schrieffer (BCS) theory. Sin…
View article: Hard superconducting gap and vortex-state spectroscopy in NbSe$_2$ van\n der Waals tunnel junctions
Hard superconducting gap and vortex-state spectroscopy in NbSe$_2$ van\n der Waals tunnel junctions Open
Device-based tunnel spectroscopy of superconductors was first performed by\nGiaever, whose seminal work provided clear evidence for the spectral gap in the\ndensity of states (DOS) predicted by the Bardeen-Cooper-Schrieffer (BCS)\ntheory. …
View article: Frequency-domain measurement of the spin-imbalance lifetime in superconductors
Frequency-domain measurement of the spin-imbalance lifetime in superconductors Open
We have measured the lifetime of spin imbalances in the quasiparticle population of a superconductor (τs) in the frequency domain. A time-dependent spin imbalance is created by injecting spin-polarized electrons at finite excitation freque…
View article: Quasiparticle spin resonance and coherence in superconducting aluminium
Quasiparticle spin resonance and coherence in superconducting aluminium Open
Conventional superconductors were long thought to be spin inert; however, there is now increasing interest in both (the manipulation of) the internal spin structure of the ground-state condensate, as well as recently observed long-lived, s…