Engineering of spin-lattice relaxation dynamics by digital growth of diluted magnetic semiconductor CdMnTe
نویسندگان
چکیده
منابع مشابه
Nuclear Magnetic Relaxation Induced by the Dynamics of Lattice
Results are presented for the relaxation of the nuclear magnetization via quadrupolar interactions caused by the dynamics of point-like lattice defects in cubic solids. For systems with nuclear spins I = 3/2, several aspects of the lineshape function of the absorption signal are considered. The treatment includes the transition to the rigid lattice case, the presence of additional static quadru...
متن کاملSpin dynamics in the diluted ferromagnetic Kondo lattice model
The interplay of disorder and competing interactions is investigated in the carrier-induced ferromagnetic state of the Kondo lattice model within a numerical finite-size study in which disorder is treated exactly. Competition between impurity spin couplings, stability of the ferromagnetic state, and magnetic transition temperature are quantitatively investigated in terms of magnon properties fo...
متن کاملTheory of diluted magnetic semiconductor ferromagnetism
We present a theory of carrier-induced ferromagnetism in diluted magnetic semiconductors ( III1-xMnxV) which allows for arbitrary itinerant-carrier spin polarization and dynamic correlations. Both ingredients are essential in identifying the system's elementary excitations and describing their properties. We find a branch of collective modes, in addition to the spin waves and Stoner continuum w...
متن کاملSpin filtering and spin separation in diluted magnetic semiconductor hybrid systems
We demonstrate spin-dependent tunneling features of electronic transport in diluted magnetic semiconductor/semiconductor hybrid systems. It is shown that the geometrical asymmetry of the multilayer heterostructure results in the asymmetry of the spin polarization on the external electric field. The degree of the asymmetry can be changed by adjusting the structural configuration and the magnitud...
متن کاملOn the relaxation dynamics of diluted antiferromagnets
The phase diagram of a diluted Ising antiferromagnet in an external magnetic field has a disordered phase for sufficiently large values of this field and for low temperatures, in which the system's equilibrium state is a domain state. We study the relaxation dynamics out of this state after switching off the magnetic field, for twoand three-dimensional diluted antiferromagnets using Monte Carlo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2006
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.2193349