Spin-density and charge-density excitations in quantum wires

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Coupling of spin waves with charge- and spin-density excitations in spin-polarized quantum wells

The coupling of spin waves with chargeand spin-density waves is shown to be induced by a spin-dependent interaction in a quantum well, which is spin polarized by a dc magnetic field at an angle u to the symmetry axis. The mixing of the plasmonic and magnonic modes, which occurs for both intraand intersubband transitions, depends on the coupling constant of the spin-spin interaction, the tilt an...

متن کامل

Density-dependent spin polarization in ultra-low-disorder quantum wires.

There is controversy as to whether a one-dimensional (1D) electron gas can spin polarize in the absence of a magnetic field. Together with a simple model, we present conductance measurements on ultra-low-disorder quantum wires supportive of a spin polarization at B=0. A spin energy gap is indicated by the presence of a feature in the range (0.5-0.7)x2e(2)/h in conductance data. Importantly, it ...

متن کامل

Density and spin-density excitations in normal-liquid He

In bulk Fermi liquids such as liquid He and nuclear matter the quasiparticle effective mass is enhanced at the Fermi surface and reduces to the bare mass far from the Fermi surface. We incorporate this central physical feature into the density and spin-density dynamics of normal-liquid He and obtain good agreement with recent high-resolution neutron-scattering experiments. Existing theories up ...

متن کامل

Charge, Spin and Momentum Density

C427 of the complexes has been investigated by theoretical calculations[2], but is still in controversy. Here we show the bonding nature of the 1zirconacyclopent-3-yne complex by means of experimental charge density analysis. Diffraction data were collected using synchrotron radiations at KEK PF-AR NW2 beam line by Rigaku Mercury CCD diffractometer up to sin / = 1.0 Å. Multipole expansion metho...

متن کامل

Charge, Spin and Momentum Density

A six-coordinated iron(II) complex, t-Fe(tzpy)2(NCS)2 (tzpy = 3(2-pyridyl)[1,2,3]triazolo[1,5-a]pyridine), undergoes a graduate spin transition from a paramagnetic high spin state (T2, S = 2, HS-1) above 200K to a diamagnetic low spin state (A1, S = 0, LS-1) below 75 K according to the magnetic measurement. The crystal structures of both HS-1 and LS-1 are studied at 298 and 40K respectively. Si...

متن کامل

ذخیره 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: Physical Review B

سال: 1997

ISSN: 0163-1829,1095-3795

DOI: 10.1103/physrevb.55.13161