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We show that an ensemble of $^2\Sigma$ molecules in the rotationally ground state trapped on an optical lattice exhibits collective spin excitations that can be controlled by applying superimposed electric and magnetic fields. In…

Chemical Physics · Physics 2010-10-12 Jesús Pérez-Ríos , Felipe Herrera , Roman V. Krems

We theoretically study equilibrium and dynamic properties of nanosized magnetic skyrmions in thin magnetic films with broken inversion symmetry, where electric field couples to magnetization via spin-orbit coupling. Based on a…

Mesoscale and Nanoscale Physics · Physics 2015-10-21 Pramey Upadhyaya , Guoqiang Yu , Pedram Khalili Amiri , Kang L. Wang

The non-equilibrium dynamics of electrons is of a great experimental and theoretical value providing important microscopic parameters of the Coulomb and electron-phonon interactions in metals and other cold plasmas. Because of the…

Superconductivity · Physics 2008-11-19 V. V. Kabanov , A. S. Alexandrov

The concept of nuclear spin temperature has been a cornerstone of the theory of dynamic nuclear spin polarization by electrons in various semiconductor structures for decades. Still, it is not always applicable to strongly localized…

Mesoscale and Nanoscale Physics · Physics 2024-08-13 D. S. Smirnov , K. V. Kavokin

Electric control of magnetism is a vision which drives intense research on magnetic semiconductors and multiferroics. Recently, also ultrathin metallic films were reported to show magnetoelectric effects at room temperature. Here we…

We present a theoretical study of low temperature nonequilibrium transport through an interacting quantum dot in the presence of Zeeman magnetic field and current injection into one of its leads. By using a self-consistent renormalized…

Mesoscale and Nanoscale Physics · Physics 2017-01-27 Shaon Sahoo , Adeline Crépieux , Mireille Lavagna

We study electronic transport through a magnetic molecule with an intrinsic spin $S$ coupled to two magnetic electrodes, in the incoherent regime. The molecule is modeled as a single resonant level with large Coulomb repulsion (no double…

Mesoscale and Nanoscale Physics · Physics 2010-11-19 Thibaut Jonckheere , Ken-Ichiro Imura , Thierry Martin

We study the magnetic field induced singlet/triplet transition for two electrons in vertically coupled quantum dots by exact diagonalization of the Coulomb interaction. We identify the different mechanisms occurring in the transition,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Devis Bellucci , Massimo Rontani , Filippo Troiani , Guido Goldoni , Elisa Molinari

The Curie temperature is one of the most fundamental physical properties of ferromagnetic materials and can be described by Weiss molecular field theory with the exchange interaction of neighboring atoms. Recently, the…

Mesoscale and Nanoscale Physics · Physics 2018-07-04 Fuyuki Ando , Kihiro T. Yamada , Tomohiro Koyama , Mio Ishibashi , Yoichi Shiota , Takahiro Moriyama , Daichi Chiba , Teruo Ono

The influence of an external electric field on the spin dynamics of an electrically neutral Fermi liquid is considered, the mechanism of such an influence being the relativistic spin-orbital interaction. As a result, Leggett's equations for…

Condensed Matter · Physics 2007-05-23 P. L. Krotkov

We present a theoretical study of the impact of an electric field combined with a magnetic field on the rotational dynamics of open shell diatomic molecules. Within the rigid rotor approximation, we solve the time-independent Schr\"odinger…

Chemical Physics · Physics 2015-06-12 Martin Gärttner , Juan J. Omiste , Peter Schmelcher , Rosario González-Férez

We investigate nonequilibrium phenomena in magnetic nano-junctions using a numerical approach that combines classical spin dynamics with the hierarchical equations of motion technique for quantum dynamics of conduction electrons. Our focus…

Mesoscale and Nanoscale Physics · Physics 2024-02-26 Rudolf Smorka , Michael Thoss , Martin Žonda

The ability to make electrical contact to single molecules creates opportunities to examine fundamental processes governing electron flow on the smallest possible length scales. We report experiments in which we controllably stretch…

Manifestations of quantum interference effects in macroscopic objects are rare. Weak localization is one of the few examples of such effects showing up in the electron transport through solid state. Here we show that weak localization…

Mesoscale and Nanoscale Physics · Physics 2018-08-02 V. V. Belykh , A. Yu. Kuntsevich , M. M. Glazov , K. V. Kavokin , D. R. Yakovlev , M. Bayer

We describe a method for cooling neutral molecules that have magnetic and electric dipole moments using collisions with cold ions. An external magnetic field is used to split the ground rovibrational energy levels of the molecule. The…

Atomic Physics · Physics 2014-08-22 F. Robicheaux

Interaction of the electron spin with local elastic twists due to transverse phonons has been studied. Universal dependence of the spin relaxation rate on the strength and direction of the magnetic field has been obtained in terms of the…

Statistical Mechanics · Physics 2008-05-05 Carlos Calero , E. M. Chudnovsky , D. A. Garanin

Electron heating in an ultracold neutral plasma is modeled using classical molecular dynamics simulations in the presence of an externally applied magnetic field. A sufficiently strong magnetic field is found to reduce disorder induced…

Plasma Physics · Physics 2018-02-14 Sanat Kumar Tiwari , Scott D. Baalrud

We study the coupling between conventional (Maxwell) and emergent electrodynamics in quantum spin ice, a 3+1-dimensional $U(1)$ quantum spin liquid. We find that a uniform electric field can be used to tune the properties of both the ground…

Strongly Correlated Electrons · Physics 2017-09-26 Étienne Lantagne-Hurtubise , Subhro Bhattacharjee , Roderich Moessner

We consider electrical transport through molecules with Heisenberg-coupled spins arranged in a ring structure in the presence of an easy-axis anisotropy. The molecules are coupled to two metallic leads and a gate. In the charged state of…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Jörg Lehmann , Daniel Loss

We present a simple mechanism for intra-molecular refrigeration, where parts of a molecule are actively cooled below the environmental temperature. We discuss the potential role and applications of such a mechanism in biology, in particular…

Quantum Physics · Physics 2010-01-07 Hans J. Briegel , Sandu Popescu
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