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It is shown that, when there is a magnetic field present, in the framework of classical or quantum mechanics, the active translations differ from the passive ones and that the canonical momentum is not the generator of them. It is also…

量子物理 · 物理学 2016-03-09 G. F. Torres del Castillo , D. A. Rosete-Álvarez

The Einstein-de Haas effect is a phenomenon in which angular momentum is transferred from microscopic spins to mechanical rotation of a rigid body. Here, we report the first observation of the Einstein-de Haas effect in a spinor-dipolar…

Quantum dots in the quantum Hall regime can have pairs of single Slater determinant states that are degenerate in energy. We argue that these pairs of many body states may give rise to a Kondo effect which can be mapped into an ordinary…

介观与纳米尺度物理 · 物理学 2009-11-07 Mahn-Soo Choi , Nak Yeon Hwang , S. -R. Eric Yang

The electromagnetic field is canonically quantized in the presence of a linear, dispersive and dissipative medium that is in uniform motion. Specifically we calculate the change in the normal modes of the coupled matter-field system and…

量子物理 · 物理学 2012-08-21 S. A. R. Horsley

We study the dynamics of two-component Bose-Einstein condensates trapped in different vertical positions in the presence of an oscillating magnetic field. It is shown here how tuning appropriately the oscillation frequency of the magnetic…

其他凝聚态物理 · 物理学 2007-05-23 Katsuhiro Nakamura , Akihisa Kohi , Hisatsugu Yamasaki , Victor M. Perez-Garcia

We study a new system in which electrons in two dimensions are confined by a non homogeneous magnetic field. The system consists of a heterostructure with on top of it a superconducting disk. We show that in this system electrons can be…

介观与纳米尺度物理 · 物理学 2009-10-31 J. Reijniers , A. Matulis , F. M. Peeters

We give a basic explanation for the oscillating properties of some physical quantities of a two-electron quantum dot in the presence of a static magnetic field. This behaviour was discussed in a previous work of ours [AM Maniero, {\it et…

强关联电子 · 物理学 2021-07-07 Angelo M. Maniero , Carlos R. de Carvalho , Frederico V. Prudente , Ginette Jalbert

The coherent spin dependent transport through a set of two capacitively coupled quantum dots placed in a magnetic field is considered within the equation of motion method. The magnetic field breaks the spin degeneracy. For special choices…

介观与纳米尺度物理 · 物理学 2007-05-23 S. Lipinski , D. Krychowski

Magnetoelectric effects at the atomic scale are demonstrated to afford unique functionality. This is shown explicitly for a quantum corral defined by a wall of magnetic atoms deposited on a metal surface where spin-orbit coupling is…

强关联电子 · 物理学 2015-06-04 Anh. T. Ngo , J. Rodriguez-Laguna , S. E. Ulloa , E. H. Kim

The Quincke effect is an electrohydrodynamic instability which gives rise to a torque on a dielectric particle in a uniform DC electric field. Previous studies reported that a sphere initially resting on the electrode rolls with steady…

软凝聚态物质 · 物理学 2019-07-23 Gerardo E. Pradillo , Hamid Karani , Petia M. Vlahovska

Using the result that an electric charge - magnetic charge system carries an internal field angular momentum of $e g / 4 \pi$ we arrive at two restrictions on magnetic monopoles via the requirement of angular momentum quantization and/or…

高能物理 - 理论 · 物理学 2007-05-23 Douglas Singleton

For two-electron diatomic molecules, we investigate magnetic field effects in non-sequential double ionization where recollisions prevail. We do so by formulating a three-dimensional semi-classical model that fully accounts for the Coulomb…

The Kondo lattice model of spin-1/2 local moments coupled to the conduction electrons at half-filling is studied for its orbital response to magnetic field on bipartite lattices. Through an effective charge dynamics, in a canonical…

强关联电子 · 物理学 2017-08-17 Panch Ram , Brijesh Kumar

Recent work by Philbin [1] has provided a Lagrangian theory that establishes a general method for the canonical quantization of the electromagnetic field in any dispersive, lossy, linear dielectric. Working from this theory, we extend the…

光学 · 物理学 2012-09-20 S. A. R. Horsley

Spin-entanglement of two electrons occupying two spatial regions -- domains -- is expressed in a compact form in terms of spin-spin correlation functions. The power of the formalism is demonstrated on several examples ranging from…

介观与纳米尺度物理 · 物理学 2009-04-10 A. Ramsak , J. Mravlje , T. Rejec

In this work, we use the thin-layer quantization procedure to study the physical implications due to curvature effects on a quantum dot in the presence of an external magnetic field. Among the various physical implications due to the…

介观与纳米尺度物理 · 物理学 2019-11-25 Luis Fernando C. Pereira , Fabiano M. Andrade , Cleverson Filgueiras , Edilberto O. Silva

Using a combination of semiclassical and recently developed wave packet propagation techniques we find the quantum self-ionization process of highly excited ions moving in magnetic fields which has its origin in the energy transfer from the…

原子物理 · 物理学 2009-11-06 Vladimir Melezhik , Peter Schmelcher

Quantum magnets offer a unique platform for exploring exotic quantum phases and quantum phase transitions through external magnetic fields. A prominent example is the field-induced Bose--Einstein condensation (BEC) of magnons near the…

A dilute concentration of magnetic impurities can dramatically affect the transport properties of an otherwise pure metal. This phenomenon, known as the Kondo effect, originates from the interactions of individual magnetic impurities with…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Grobis , I. G. Rau , R. M. Potok , D. Goldhaber-Gordon

The polarization of radiation by scattering on an atom embedded in combined external quadrupole electric and uniform magnetic fields is studied theoretically. Limiting cases of scattering under Zeeman effect and Hanle effect in weak…

天体物理学 · 物理学 2015-06-24 Yee Yee Oo , M. Sampoorna , K. N. Nagendra , Sharath Ananthamurthy , G. Ramachandran
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