Melting of a Wigner crystal in an ionic dielectric

نویسندگان
چکیده

برای دانلود رایگان 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

Melting of a Wigner Crystal in an Ionic Dielectric

The melting of a Wigner Crystal of electrons placed into a host polar material is examined as a function of the density and the temperature. When the coupling to the longitudinal optical modes of the host medium is turned on, the WC is progressively transformed into a polaronic Wigner Crystal. We estimate the critical density for crystal melting at zero temperature using the Lindeman criterion....

متن کامل

Temperature Tunability of Dielectric/ Liquid Crystal / Dielectric Photonic Crystal Structures

Recently, photonic crystals doped with liquid crystal (LC) material havegained much research interest. In this article new ternary one-dimensional photoniccrystal introduced and studied. The liquid crystal layer of 5CB and 5PCH is sandwichedby two dielectric layers. For the first time, we use four structures SiO2/UCF35/CaF2,SiO2/5CB/CaF2, NFK51/UCF35/NPSK53 and NFK51/5CB/NPSK53. The effect ofte...

متن کامل

Is the Quantum Melting of a Polaron Wigner Crystal an Insulator - to - Superconductor Transition ?

On examining the stability of a Wigner Crystal (WC) in an ionic dielectric, two competitive effects due to Polaron formation are found to be important: (i) the screening of the Coulomb forces which destabilizes the crystal, compensated by (ii) the increase of the carrier mass (polaron mass). The quantum melting of the Polaron Wigner Crystal (PWC) is examined. By calculating the quantum fluctuat...

متن کامل

Observation of an Anisotropic Wigner Crystal.

We report a new correlated phase of two-dimensional charged carriers in high magnetic fields, manifested by an anisotropic insulating behavior at low temperatures. It appears in a large range of low Landau level fillings 1/3≲ν≲2/3 in hole systems confined to wide GaAs quantum wells when the sample is tilted in magnetic field to an intermediate angle. The parallel field component (B_{∥}) leads t...

متن کامل

Ionic contribution to the dielectric properties of a nematic liquid crystal in thin cells

We report measurements on dielectric properties of a nematic liquid crystal in planar aligned cells with two different thicknesses ~1.2 and 6.7 mm!. The nematic has a wide thermal range and the temperature variation of the effective dielectric constant (e') of the thick cell reflects that of the orientational order parameter. On the other hand, the thin cell exhibits a higher value of e' which ...

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: The European Physical Journal B

سال: 2000

ISSN: 1434-6028

DOI: 10.1007/s100510050111