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19942026
most citedPhonons and related properties of extended systems from density-functional perturbation theory

10.1k citations

Showing 2009Show all

20 papers · 1 filter

cond-mat.str-el2009★ 28 cited

Neutral modes edge state dynamics through quantum point contacts

Dario Ferraro, Alessandro Braggio, Nicodemo Magnoli +1

Dynamics of neutral modes for fractional quantum Hall states is investigated for a quantum point contact geometry in the weak-backscattering regime. The effective field theory intr…

quant-ph2009★ 77 cited

Photon-number statistics with Silicon photomultipliers

Marco Ramilli, Alessia Allevi, Valery Chmill +3

We present a description of the operation of a multi-pixel detector in the presence of non-negligible dark-count and cross-talk effects. We apply the model to devise self-consisten…

quant-ph2009★ 10 cited

Non-Gaussian states by conditional measurements

Marco G. Genoni, Federica A. Beduini, Alessia Allevi +3

We address realistic schemes for the generation of non-Gaussian states of light based on conditional intensity measurements performed on correlated bipartite states. We consider bo…

cond-mat.mtrl-sci2009★ 153 cited

Exchange bias driven by the Dzyaloshinskii-Moriya interaction and ferroelectric polarization at G-type antiferromagnetic perovskite interfaces

Shuai Dong, Kunihiko Yamauchi, Seiji Yunoki +6

Exchange bias is usually rationalized invoking spin pinning effects caused by uncompensated antiferromagnetic interfaces. However, for compensated antiferromagnets other extrinsic…

cond-mat.str-el2009★ 146 cited

Theoretical prediction of multiferroicity in double perovskite YNiMnO

Sanjeev Kumar, Gianluca Giovannetti, Jeroen van den Brink +1

We put forward double perovskites of the RNiMnO family (with a rare-earth atom) as a new class of multiferroics on the basis of {\it ab initio} density functional calcu…

cond-mat.mtrl-sci2009★ 64 cited

First-principles study of the dipole layer formation at metal-organic interfaces

Paul C. Rusu, Gianluca Giovannetti, Christ Weijtens +2

We study the dipole layer formed at metal-organic interfaces by means of first-principles calculations. Interface dipoles are monitored by calculating the work function change of A…

physics.flu-dyn2009★ 17 cited

Non-gaussian effects in the cage dynamics of polymers

A. Ottochian, C. De Michele, D. Leporini

The correlation between the fast cage dynamics and structural relaxation is investigated in a model polymer system. It is shown that the cage vibration amplitude, as expressed by t…

cond-mat.mtrl-sci2009★ 27 cited

Magnetic anisotropy in Li-phosphates and origin of magnetoelectricity in LiNiPO4

Kunihiko Yamauchi, Silvia Picozzi

Li-based phosphates are paradigmatic materials for magnetoelectricity. By means of first-principles calculations, we elucidate the microscopic origin of spin anisotropy and of magn…

cond-mat.mtrl-sci2009★ 102 cited

Evidence for multiferroicity in TTF-CA organic molecular crystals

Gianluca Giovannetti, Sanjeev Kumar, Alessandro Stroppa +2

We show by means of ab-initio calculations that the organic molecular crystal TTF-CA is multiferroic: it has an instability to develop spontaneously both ferroelectric and magnetic…

cond-mat.str-el2009★ 119 cited

Multiferroicity in rare-earth nickelates RNiO3

Gianluca Giovannetti, Sanjeev Kumar, Daniel Khomskii +2

We show that charge ordered rare-earth nickelates of the type RNiO3 (R= Ho, Lu, Pr and Nd) are multiferroic with very large magnetically induced ferroelectric (FE) polarizations. T…

cond-mat.str-el2009★ 19 cited

When finite-size corrections vanish: The S=1/2 XXZ model and the Razumov-Stroganov state

Leonardo Banchi, Filippo Colomo, Paola Verrucchi

We study the one-dimensional XXZ model on a finite lattice at zero temperature, varying the exchange anisotropy and the number of sites of the lattice. Special emph…

cond-mat.mtrl-sci2009★ 107 cited

Ferroelectricity in multiferroic magnetite Fe3O4 driven by noncentrosymmetric Fe2+/Fe3+ charge-ordering: First-principles study

Kunihiko Yamauchi, Tetsuya Fukushima, Silvia Picozzi

By means of first-principles simulations, we unambiguously show that improper ferroelectricity in magnetite in the low-temperature insulating phase is driven by charge-ordering. An…

cond-mat.soft2009★ 26 cited

First-principles design of nanomachines

Jayanth R. Banavar, Marek Cieplak, Trinh Xuan Hoang +1

Learning from nature's amazing molecular machines, globular proteins, we present a framework for the predictive design of nano-machines. We show that the crucial ingredients for a…

cond-mat.mtrl-sci2009★ 187 cited

First Principles Studies of Multiferroic Materials

Silvia Picozzi, Claude Ederer

Multiferroics, materials where spontaneous long-range magnetic and dipolar orders coexist, represent an attractive class of compounds, which combine rich and fascinating fundamenta…

cond-mat.str-el2009★ 121 cited

Signatures of the super fluid-insulator phase transition in laser driven dissipative nonlinear cavity arrays

A. Tomadin, V. Giovannetti, R. Fazio +4

We analyze the non-equilibrium dynamics of a gas of interacting photons in an array of coupled dissipative nonlinear cavities driven by a pulsed external coherent field. Using a me…

cond-mat.mes-hall2009★ 78 cited

Non-adiabatic pumping through interacting quantum dots

Fabio Cavaliere, Michele Governale, Jürgen König

We study non-adiabatic two-parameter charge and spin pumping through a single-level quantum dot with Coulomb interaction. For the limit of weak tunnel coupling and in the regime of…

cond-mat.stat-mech2009★ 11 cited

Generalized Pearson distributions for charged particles interacting with an electric and/or a magnetic field

A. Rossani, A. M. Scarfone

The linear Boltzmann equation for elastic and/or inelastic scattering is applied to derive the distribution function of a spatially homogeneous system of charged particles spreadin…

cond-mat.stat-mech2009★ 36 cited

Asymptotic solutions of a nonlinear diffusive equation in the framework of -generalized statistical mechanics

T. Wada, A. M. Scarfone

The asymptotic behavior of a nonlinear diffusive equation obtained in the framework of the -generalized statistical mechanics is studied. The analysis based on the classical Lie…

q-bio.MN2009★ 41 cited

Identifying essential genes in E. coli from a metabolic optimization principle

C. Martelli, A. De Martino, E. Marinari +2

Understanding the organization of reaction fluxes in cellular metabolism from the stoichiometry and the topology of the underlying biochemical network is a central issue in systems…

quant-ph2009★ 17 cited

Correlations in photon-numbers and integrated intensities in parametric processes involving three optical fields

Jan Perina, Jaromir Krepelka, Maria Bondani +2

Two strongly-pumped parametric interactions are simultaneously realized in a single nonlinear crystal in order to generate three strongly correlated optical fields. By combining to…