Zobrazeno 1 - 10
of 802
pro vyhledávání: '"DASGUPTA, C"'
Publikováno v:
Phys. Rev. B 84, 144525 (2011)
We describe here a minimal theory of tight binding electrons moving on the square planar Cu lattice of the hole-doped cuprates and mixed quantum mechanically with pairs of them (Cooper pairs). Superconductivity occurring at the transition temperature
Externí odkaz:
http://arxiv.org/abs/1011.4543
Results of analytic and numerical investigations of first-passage properties of equilibrium fluctuations of monatomic steps on a vicinal surface are reviewed. Both temporal and spatial persistence and survival probabilities, as well as the probabilit
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702690
Autor:
Dougherty, D. B., Tao, C., Bondarchuk, O., Cullen, W. G., Williams, E. D., Constantin, M., Dasgupta, C., Sarma, S. Das
Publikováno v:
Phys. Rev. E 71, 021602 (2005)
The effects of sampling rate and total measurement time have been determined for single-point measurements of step fluctuations within the context of first-passage properties. Time dependent STM has been used to evaluate step fluctuations on Ag(111)
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410094
Autor:
Bondarchuk, O., Dougherty, D. B., Degawa, M., Williams, E. D., Constantin, M., Dasgupta, C., DasSarma, S.
Time dependent STM has been used to evaluate step fluctuations as a function of temperature (300-450 K) on Ag(111) films grown on mica. The temporal correlation function scales as a power law in time, t^1/n with measured values of 1/n varying over a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408181
Publikováno v:
Phys. Rev. E 69, 061608 (2004)
Persistence probabilities of the interface height in (1+1)- and (2+1)-dimensional atomistic, solid-on-solid, stochastic models of surface growth are studied using kinetic Monte Carlo simulations, with emphasis on models that belong to the molecular b
Externí odkaz:
http://arxiv.org/abs/cond-mat/0401438
Publikováno v:
Phys. Rev. E 69, 051603 (2004)
We report the results of numerical investigations of the steady-state (SS) and finite-initial-conditions (FIC) spatial persistence and survival probabilities for (1+1)--dimensional interfaces with dynamics governed by the nonlinear Kardar--Parisi--Zh
Externí odkaz:
http://arxiv.org/abs/cond-mat/0312461
Publikováno v:
Phys. Rev. E 69, 022101 (2004)
We report the results of analytic and numerical investigations of the time scale of survival or non-zero-crossing probability $S(t)$ in equilibrium step fluctuations described by Langevin equations appropriate for attachment/detachment and edge-diffu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307086
Autor:
Constantin, M., Sarma, S. Das, Dasgupta, C., Bondarchuk, O., Dougherty, D. B., Williams, E. D.
Publikováno v:
Phys. Rev. Lett. 91, 086103 (2003)
We show experimentally and theoretically that the persistence of large deviations in equilibrium step fluctuations is characterized by an infinite family of independent exponents. These exponents are obtained by carefully analyzing dynamical experime
Externí odkaz:
http://arxiv.org/abs/cond-mat/0303214
Autor:
Dougherty, D. B., Lyubinetsky, I., Williams, E. D., Constantin, M., Dasgupta, C., Sarma, S. Das
Publikováno v:
Phys.Rev.Lett. 89, 136102 (2002)
The persistence behavior for fluctuating steps on the $Si(111)$ $(\sqrt3 \times \sqrt3)R30^{0} - Al$ surface was determined by analyzing time-dependent STM images for temperatures between 770 and 970K. The measured persistence probability follows a p
Externí odkaz:
http://arxiv.org/abs/cond-mat/0209068
Autor:
Biswal, B., Dasgupta, C.
Publikováno v:
Phys. Rev. Lett. 88, 088102 (2002)
A neural network model that exhibits stochastic population bursting is studied by simulation. First return maps of inter-burst intervals exhibit recurrent unstable periodic orbit (UPO)-like trajectories similar to those found in experiments on hippoc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0203384