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Researchers develop ultra-sensitive device for detecting magnetic fields（图）
Researchers develop ultra-sensitive device detecting magnetic fields
2020/6/19
A team of Brown University physicists has developed a new type of compact, ultra-sensitive magnetometer. The new device could be useful in applications involving weak magnetic fields, the re...
Quantum limited measurement of magnetic field gradient with entangled atoms
Quantum limited measurement magnetic field gradient entangled atoms
2016/1/23
We propose a method to detect the amplitude gradient of a microwave field by using a pair of entangled two-component Bose-Einstein condensates. We consider the two spatially separated condensates to b...
Critical entropies for magnetic ordering in bosonic mixtures on a lattice
Simulation worm algorithm 3 d optical lattice temperature system antiferromagnetic particles
2014/12/18
We perform a numeric study (Worm algorithm Monte Carlo simulations) of ultracold two-component bosons in two- and three-dimensional optical lattices. At strong enough interactions and low enough tempe...
Dynamical Magnetic and Nuclear Polarization in Complex Spin Systems: Semi-magnetic II-VI Quantum Dots
Dynamical Magnetic and Nuclear Polarization in Complex Spin Systems: Semi-magnetic II-VI Quantum Dots
2012/2/27
Dynamical magnetic and nuclear polarization in complex spin systems is discussed on the example of transfer of spin from exciton to the central spin of magnetic impurity in a quantum dot in the presen...
Topological Insulator Magnetic Tunnel Junctions: Quantum Hall Effect and Fractional Charge via Folding
Topological Insulator Magnetic Tunnel Junctions Quantum Hall Effect Fractional Charge Folding
2012/2/27
We provide a characterization of tunneling between coupled topological insulators in 2D and 3D under the influence of a ferromagnetic layer. We explore conditions for such systems to exhibit integer q...
An alternative approach to exact wave functions for time-dependent coupled oscillator model of charged particle in variable magnetic field
time-dependent coupled oscillator model charged particle variable magnetic field
2010/11/4
A general treatment of the quantal time-dependent coupled oscillators in presence of the variable magnetic field is presented. The treatment is based on the use of an alternative canonical transforma...
Ab Initio Study of Half-Metallic Feature and Electronic Structure of A2FeMoO6 (A=Ba,Ca) Magnetic System
Electronic structure Half metallic Complex Perovskite
2010/9/29
We report several ab initio calculations performed over the A2FeMoO6 (A=Ba, Ca) double perovskite. Results show that it is an insulator for the spin up orientation and conductor for the other one. We ...
Electronic Properties of Coupled Quantum Rings in the Presence of a Magnetic Field
Electronic Properties Coupled Quantum Rings a Magnetic Field
2010/10/22
We have studied the energy spectrum of a system formed by two concentric, coupled, semiconductor quantum rings. We have investigated the effect of a uniform magnetic field applied along the rings axis...
Electric and Magnetic Field Effects on Electronic Structure of Straight and Toroidal Carbon Nanotubes
Electric and Magnetic Field Effects Electronic Structure Straight and Toroidal Carbon Nanotubes
2010/10/22
Nanotubes have been proved as promising candidates for many technological applications in the nanoscale word and different physical properties have been studied and measured along the few recent years...
Electronic Energy Spectrum in a DQWS Within a Tilted Magnetic Field
Electronic Energy Spectrum Tilted Magnetic Field
2010/4/16
The analytical solution of the Schrödinger equation for a DQWS subjected to an externally applied tilted magnetic field are obtained and the results are discussed. The dependency of energy spectr...