نتایج جستجو برای: spin coupling

تعداد نتایج: 262545  

Journal: :The Journal of chemical physics 2013
Frédéric A Perras David L Bryce

Among the interactions which govern NMR spectra, spin-spin coupling interactions provide the most direct form of structural information which is of interest to chemists. Dipolar coupling may be used to measure internuclear distances directly and J coupling may be used to identify bonding interactions and provide insights into the nature of the bonds. It is well known that the presence of a quad...

Journal: :Physical review letters 2009
A H Castro Neto F Guinea

We study the effect of impurities in inducing spin-orbit coupling in graphene. We show that the sp3 distortion induced by an impurity can lead to a large increase in the spin-orbit coupling with a value comparable to the one found in diamond and other zinc-blende semiconductors. The spin-flip scattering produced by the impurity leads to spin scattering lengths of the order found in recent exper...

Journal: :The Journal of Physical Chemistry A 2008

2010
P. Rakyta J. Cserti

We study the electronic band structure of monolayer graphene when Rashba spin-orbit coupling is present. We show that if the Rashba spin-orbit coupling is stronger than the intrinsic spin-orbit coupling, the low-energy bands undergo trigonal-warping deformation and that for energies smaller than the Lifshitz energy, the Fermi circle breaks up into separate parts. The effect is very similar to w...

2015
Konstantin Batygin Alessandro Morbidelli

The richness of dynamical behavior exhibited by the rotational states of various solar system objects has driven significant advances in the theoretical understanding of their evolutionary histories. An important factor that determines whether a given object is prone to exhibiting non-trivial rotational evolution is the extent to which such an object can maintain a permanent aspheroidal shape, ...

2015
Takaharu Tashiro Saki Matsuura Akiyo Nomura Shun Watanabe Keehoon Kang Henning Sirringhaus Kazuya Ando

Coupling between conduction electrons and localized magnetization is responsible for a variety of phenomena in spintronic devices. This coupling enables to generate spin currents from dynamical magnetization. Due to the nonlinearity of magnetization dynamics, the spin-current emission through the dynamical spin-exchange coupling offers a route for nonlinear generation of spin currents. Here, we...

2004
JIANGPING HU BOGDAN A. BERNEVIG CONGJUN WU C. Wu

We present a simple and pedagogical derivation of the spin current as the linear response to an external electric field for both Rashba and Luttinger spin–orbital coupling Hamiltonians. Except for the adiabatic approximation, our derivation is exact to the linear order of the electric field for both models. The spin current is a direct result of the difference in occupation levels between diffe...

Journal: :EPL (Europhysics Letters) 2013

Journal: :Journal of Chemical Theory and Computation 2017

2017
Peter Dowben C. Waldfried Elio Vescovo Peter A. Dowben

The magnetic properties of strained thin films of gadolinium are characterized by a wave vector and thickness dependence of the exchange splitting. The spin-resolved band structure has been mapped by spin polarized photoemission, and provides considerable insight into the relationship between magnetism of local moment systems, and band structure. For more than 30 years theorists [l] have predic...

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