143 citations · 1.1k across the 56 of their papers we have counts for
15 papers · 1 filter
Programmable self-assembly for scalable molecular electronic architectures
Seham Helmi, Junjie Liu, Keith G Andrews +5
Molecular electronics and other technologies whose components comprise individual molecules have been pursued for half a century because the molecular scale represents the limit of…
Chemical tuning of quantum spin-electric coupling in molecular nanomagnets
Mikhail V. Vaganov, Nicolas Suaud, Francois Lambert +8
Controlling quantum spins using electric rather than magnetic fields promises significant architectural advantages for developing quantum technologies. In this context, spins in mo…
Quantum flicker noise in atomic and molecular junctions
Ofir Shein-Lumbroso, Junjie Liu, Abhay Shastry +2
We report on a quantum form of electronic flicker noise in nanoscale conductors that contains valuable information on quantum transport. This noise is experimentally identified in…
Quantum Nondemolition Photon Counting With a Hybrid Electromechanical Probe
Junjie Liu, Hsing-Ta Chen, Dvira Segal
Quantum nondemolition (QND) measurements of photons is a much pursued endeavor in the field of quantum optics and quantum information processing. Here we propose a novel hybrid opt…
Sharp negative differential resistance from vibrational mode softening in molecular junctions
Junjie Liu, Dvira Segal
We unravel the critical role of vibrational mode softening in single-molecule electronic devices at high bias. Our theoretical analysis is carried out with a minimal model for mole…
Quantum coherent spin-electric control in a molecular nanomagnet at clock transitions
Junjie Liu, Jakub Mrozek, Aman Ullah +5
Electrical control of spins at the nanoscale offers significant architectural advantages in spintronics, because electric fields can be confined over shorter length scales than mag…
Thermodynamic uncertainty relation in quantum thermoelectric junctions
Junjie Liu, Dvira Segal
Recently, a thermodynamic uncertainty relation (TUR) has been formulated for classical Markovian systems demonstrating trade-off between precision (current fluctuation) and cost (d…
Strong coupling of microwave photons to antiferromagnetic fluctuations in an organic magnet
M. Mergenthaler, J. Liu, J. J. Le Roy +10
Coupling between a crystal of di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium radicals and a superconducting microwave resonator is investigated in a circuit quantum electrodynamics…
Quantum Interference in Graphene Nanoconstrictions
Pascal Gehring, Hatef Sadeghi, Sara Sangtarash +7
We report quantum interference effects in the electrical conductance of chemical vapor deposited graphene nanoconstrictions fabricated using feedback controlled electroburning. The…
Nonequilibrium spin-boson model: from weak to strong coupling
Junjie Liu, Hui Xu, Baowen Li +1
We present a general theory to explore energy transfer in nonequilibrium spin-boson models within the framework of nonequilibrium Green's function (NEGF). In contrast to convention…
Green's functions for spin boson systems: Beyond conventional perturbation theories
Junjie Liu, Hui Xu, Changqin Wu
Unraveling general properties of Green's functions of quantum dissipative systems is of both experimental relevance and theoretical interest. Here, we study the spin-boson model as…
Three-terminal graphene single-electron transistor fabricated using feedback-controlled electroburning
Paweł Puczkarski, Pascal Gehring, Chit S. Lau +5
We report room-temperature Coulomb blockade in a single layer graphene three-terminal single-electron transistor (SET) fabricated using feedback-controlled electroburning. The smal…
A Microscopic and Spectroscopic View of Quantum Tunneling of Magnetization
Junjie Liu, Enrique del Barco, Stephen Hill
This chapter takes a microscopic view of quantum tunneling of magnetization (QTM) in single-molecule magnets (SMMs), focusing on the interplay between exchange and anisotropy. Care…
Asymmetric Berry-Phase Interference Patterns in a Single-Molecule Magnet
H. M. Quddusi, J. Liu, S. Singh +4
A Mn4 single-molecule magnet displays asymmetric Berry-phase interference patterns in the transverse-field (HT) dependence of the magnetization tunneling probability when a longitu…
Magnetic Quantum Tunneling: Insights from Simple Molecule-Based Magnets
Stephen Hill, Saiti Datta, Junjie Liu +7
This article takes a broad view of the understanding of magnetic bistability and magnetic quantum tunneling in single-molecule magnets (SMMs), focusing on three families of relativ…