Physics (Scholarly Publications): Recent submissions
Now showing items 221-240 of 1742
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High-temperature coherent transport in the XXZ chain in the presence of an impurity
(2018)We study high-temperature spin transport through an anisotropic spin-12 Heisenberg chain in which integrability is broken by a single impurity close to the center of the chain. For a finite impurity strength, the level ... -
Daemonic ergotropy: Enhanced work extraction from quantum correlations
(2017)We investigate how the presence of quantum correlations can influence work extraction in closed quantum systems, establishing a new link between the field of quantum non-equilibrium thermodynamics and the one of quantum ... -
In Situ Thermometry of a Cold Fermi Gas via Dephasing Impurities
(2020)The precise measurement of low temperatures is a challenging, important, and fundamental task for quantum science. In particular, in situ thermometry is highly desirable for cold atomic systems due to their potential for ... -
Tunable phonon-induced steady state coherence in a double-quantum-dot charge qubit
(2020)Charge qubits can be created and manipulated in solid-state double-quantum-dot (DQD) platforms. Typically, these systems are strongly affected by quantum noise stemming from coupling to substrate phonons. This is usually ... -
Theoretical investigation of the structural, elastic, electronic, and dielectric properties of alkali-metal-based bismuth ternary chalcogenide
(2020)The past decade has witnessed the rapid introduction of organic-inorganic hybrid compounds in photovoltaic applications. Motivated by the strong demand for stable and nontoxic materials in this class, we report a theoretical ... -
Edge superconductivity in multilayer WT<inf>e2</inf>Josephson junction
(2020)WTe2, as a type-IIWeyl semimetal, has 2D Fermi arcs on the (001) surface in the bulk and 1D helical edge states in its monolayer. These features have recently attracted wide attention in condensed matter physics. However, ... -
The 2020 magnetism roadmap
(2020)Andreas Berger CICnanoGUNE BRTA Following the success and relevance of the 2014 and 2017 Magnetism Roadmap articles, this 2020 Magnetism Roadmap edition takes yet another timely look at newly relevant and highly active ... -
Unveiling phonons in a molecular qubit with four-dimensional inelastic neutron scattering and density functional theory
(2020)Phonons are the main source of relaxation in molecular nanomagnets, and different mechanisms have been proposed in order to explain the wealth of experimental findings. However, very limited experimental investigations on ... -
Neutral excitation density-functional theory: an efficient and variational first-principles method for simulating neutral excitations in molecules.
(2020)We introduce neutral excitation density-functional theory (XDFT), a computationally light, generally applicable, first-principles technique for calculating neutral electronic excitations. The concept is to generalise ... -
High-throughput bandstructure simulations of van der Waals hetero-bilayers formed by 1T and 2H monolayers
(2021)Vertically stacked van der Waals heterostructures made of two-dimensional compounds are almost an infinite playground for the fabrication of nano-engineered materials for the most diverse applications. Unfortunately, ... -
Ballistic vs diffusive low-frequency scaling in the XXZ and a locally perturbed XXZ chain
(2020)We study the matrix elements of local operators in the eigenstates of the integrable XXZ chain and of the quantum-chaotic model obtained by locally perturbing the XXZ chain with a magnetic impurity. We show that, at ... -
The Limit of Spin Lifetime in Solid-State Electronic Spins
(2020)The development of spin qubits for quantum technologies requires their protection from the main source of finite-temperature decoherence: atomic vibrations. Here we eliminate one of the main barriers to the progress in ... -
Quasiperiodic quantum heat engines with a mobility edge
(2020)Steady-state thermoelectric machines convert heat into work by driving a thermally generated charge current against a voltage gradient. In this work, we propose a new class of steady-state heat engines operating in the ... -
A New Highly Anisotropic Rh-Based Heusler Compound for Magnetic Recording
(2020)The development of high-density magnetic recording media is limited by superparamagnetism in very small ferromagnetic crystals. Hard magnetic materials with strong perpendicular anisotropy offer stability and high recording ... -
Thermodynamics of precision in quantum nonequilibrium steady states
(2019)Autonomous engines operating at the nanoscale can be prone to deleterious fluctuations in the heat and particle currents. Thermodynamic uncertainty relations (TURs) express a fundamental lower bound which translates a ... -
Non-destructive in-situ thermometry of a cold gas via rephrasing impurities
(2020)The precise measurement of low temperatures is a challenging, important and fundamental task for quantum science. In particular, non-destructive in-situ thermometry is highly desirable for cold atomic systems due to their ... -
Quantum work statistics and resource theories: Bridging the gap through Rényi divergences
(2019)The work performed on or extracted from a nonautonomous quantum system described by means of a two-point projective-measurement approach is a stochastic variable. We show that the cumulant generating function of work can ... -
Out of equilibrium thermodynamics of quantum harmonic chains
(2019)The thermodynamic implications for the out-of-equilibrium dynamics of quantum systems are to date largely unexplored, especially for quantum many-body systems. In this paper we investigate the paradigmatic case of an array ... -
Tensor-network method to simulate strongly interacting quantum thermal machines
(2020)We present a methodology to simulate the quantum thermodynamics of thermal machines which are built from an interacting working medium in contact with fermionic reservoirs at a fixed temperature and chemical potential. Our ... -
Perspective and Prospects for Rare Earth Permanent Magnets
(2020)Rare earth permanent magnets constitute a mature technology, but the shock of the 2011 rare earth crisis led to the re-evaluation of many ideas from the 1980s and 1990s about possible new hard magnets containing little or ...
