Depinning and dynamics of ac driven vortex lattices in random media

D. Perez Daroca; G. S. Lozano; G. Pasquini; V. Bekeris

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Depinning and dynamics of ac driven vortex lattices in random media

机译：交流介质中交流驱动涡旋晶格的固定和动力学

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We study the different dynamical regimes of a vortex lattice driven by ac forces in the presence of random pinning via numerical simulations. The behavior of the different observables is characterized as a function of the applied force amplitude for different frequencies. We discuss the inconveniences of using the mean velocity to identify the depinning transition and we show that instead, the mean quadratic displacement of the lattice is the relevant magnitude to characterize different ac regimes. We discuss how the results depend on the initial configuration and we identify hysteretic effects which are absent in the dc driven systems.

机译：我们通过数值模拟研究了在存在随机钉扎的情况下由交流力驱动的旋涡晶格的不同动力学机制。不同可观察物的行为被表征为不同频率下所施加力幅度的函数。我们讨论了使用平均速度来识别固定变迁的不便之处，并且我们表明，相反，晶格的平均二次位移是表征不同ac方案的相关幅度。我们讨论结果如何取决于初始配置，并确定直流驱动系统中不存在的磁滞效应。

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《Physical review》 |2010年第18期|P.184520.1-184520.6|共6页
作者
D. Perez Daroca; G. S. Lozano; G. Pasquini; V. Bekeris;
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Departamento de Fisica, FCEyN, Universidad de Buenos Aires and IFIBA, CONICET, Pabellon 1, Ciudad Universitaria, Buenos Aires, Argentina;

rnDepartamento de Fisica, FCEyN, Universidad de Buenos Aires and IFIBA, CONICET, Pabellon 1, Ciudad Universitaria, Buenos Aires, Argentina;

rnDepartamento de Fisica, FCEyN, Universidad de Buenos Aires and IFIBA, CONICET, Pabellon 1, Ciudad Universitaria, Buenos Aires, Argentina;

rnDepartamento de Fisica, FCEyN, Universidad de Buenos Aires and IFIBA, CONICET, Pabellon 1, Ciudad Universitaria, Buenos Aires, Argentina;

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1. Depinning and dynamic phases in driven three-dimensional vortex lattices in anisotropic superconductors [J] . Olson CJ., Gronbech-Jensen N. Physica, C. Superconductivity and its applications . 2000,第Pta2期

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2. Anomalous interstitial dynamics, Stokes' drift, and current inversion in AC-driven vortex lattices in superconductors with arrays of asymmetric double-well traps [J] . Marchesoni F., Zhu BY., Nori F. Physica, A. Statistical mechanics and its applications . 2003,第1a2期

机译：具有非对称双阱陷阱阵列的超导体中交流驱动的涡流晶格中的异常间隙动力学，斯托克斯漂移和电流反转
3. Mode locking in driven vortex lattices with transverse ac drive and random pinning - art. no. 184508 [J] . Kolton AB., Dominguez D., Gronbech-Jensen N. Physical Review, B. Condensed Matter . 2002,第18期

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4. Vortex wave stability in homogeneous excitable media: simulations on a randomized discrete lattice [C] . Feldman, A., Yin, Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference . 1997

机译：均匀激发介质中的涡旋波稳定性：随机离散晶格上的模拟
5. Thermodynamics and dynamics of vortex lattices in Type-II superconductors. [D] . Sasik, Roman. 1996

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6. Vortex dynamics and scalar transport in the wake of a bluff body driven through a steady recirculating flow [O] . Stephane B. Poussou, Michael W. Plesniak -1

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7. Depinning and dynamics of AC driven vortex lattices in random media [O] . Daroca, D. Perez, Lozano, G. S., Pasquini, G., 2010

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8. AC Current Driven Dynamic Vortex State in YBa2Cu3O7-x (Postprint). [R] . A. Frey A. Lucarelli F. Grilli G. Lupke R. Yang 2012

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Depinning and dynamics of ac driven vortex lattices in random media

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