output
19952026
most citedThe virtual crystal approximation revisited: Application to dielectric and piezoelectric properties of perovskites

912 citations

Showing 2004Show all

9 papers · 1 filter

cond-mat.mes-hall2004★ 228 cited

Dynamics of a two-level system strongly coupled to a high-frequency quantum oscillator

E. K. Irish, J. Gea-Banacloche, I. Martin +1

Recent experiments on quantum behavior in microfabricated solid-state systems suggest tantalizing connections to quantum optics. Several of these experiments address the prototypic…

cond-mat.mes-hall2004★ 27 cited

Spin dynamics and level structure of quantum-dot quantum wells

Jesse Berezovsky, Min Ouyang, Florian Meier +3

We have characterized CdS/CdSe/CdS quantum-dot quantum wells using time-resolved Faraday rotation (TRFR). The spin dynamics show that the electron g-factor varies as a function of…

cond-mat.mtrl-sci2004★ 40 cited

Properties of Pb(Zr,Ti)O ultrathin films under stress-free and open-circuit electrical boundary conditions

Emad Almahmoud, Yulia Navtsenya, Igor Kornev +2

A first-principles-based scheme is developed to simulate properties of (001) PbO-terminated Pb(ZrTi)O thin films that are under stress-free and open-circuit bound…

cond-mat.other2004★ 18 cited

Mean-field treatment of the damping of the oscillations of a 1D Bose gas in an optical lattice

Julio Gea-Banacloche, Ana Maria Rey, Guido Pupillo +2

We present a theoretical treatment of the surprisingly large damping observed recently in one-dimensional Bose-Einstein atomic condensates in optical lattices. We show that time-de…

quant-ph2004

Entangled and disentangled evolution for a single atom in a driven cavity

J. Gea-Banacloche, T. C. Burt, P. R. Rice +1

For an atom in an externally driven cavity, we show that special initial states lead to near-disentangled atom-field evolution, and superpositions of these can lead to near maximal…

math.GT2004★ 2 cited

Mp-small summands increase knot width

Jacob Hendricks

Scharlemann and Schultens have shown that for any pair of knots K_1 and K_2, w(K_1 # K_2) is greater than or equal to max{w(K_1),w(K_2)}. Scharlemann and Thompson have given a sche…

cond-mat.mtrl-sci2004★ 271 cited

Ultrathin films of ferroelectric solid solutions under residual depolarizing field

Igor Kornev, Huaxiang Fu, L. Bellaiche

A first-principles-derived approach is developed to study the effects of uncompensated depolarizing electric fields on the properties of Pb(Zr,Ti)O ultrathin films for differen…

cond-mat.mtrl-sci2004★ 68 cited

Atomistic simulations of the incipient ferroelectric KTaO

A. R. Akbarzadeh, L. Bellaiche, Kevin Leung +2

A parameterized effective Hamiltonian approach is used to investigate KTaO. We find that the experimentally observed anomalous dielectric response of this incipient ferroelectr…

math.CV2004★ 1 cited

On the number of zeros of certain rational harmonic functions

Dmitry Khavinson, Genevra Neumann

Extending a result from the paper of D. Khavinson and G. Swiatek, we show that the rational harmonic function , where r(z) is a rational function of degree n > 1, h…