Thermal hopping and retrapping of a Brownian particle in the tilted periodic potential of a NbN/MgO/NbN Josephson junction

被引：52

作者：

Longobardi, Luigi ^{[1
,2
]}

Massarotti, Davide ^{[2
,3
]}

Rotoli, Giacomo ^{[1
]}

Stornaiuolo, Daniela ^{[2
]}

Papari, Gianpaolo ^{[4
,5
]}

Kawakami, Akira ^{[6
]}

Pepe, Giovanni Piero ^{[2
,3
]}

Barone, Antonio ^{[2
,3
]}

Tafuri, Francesco ^{[1
,2
]}

机构：

[1] Univ Naples 2, Dipartimento Ingn Informaz, I-81031 Aversa, Ce, Italy

[2] CNR SPIN UOS Napoli, I-80126 Naples, Na, Italy

[3] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Na, Italy

[4] CNR NANO, NEST, I-56126 Pisa, Italy

[5] Scuola Normale Super Pisa, I-56126 Pisa, Italy

[6] Natl Inst Informat & Commun Technol, Adv ICT Res Inst, Nishi Ku, Kobe, Hyogo 6512492, Japan

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 18期

关键词：

ZERO-VOLTAGE STATE; FABRICATION; DIFFUSION; LIFETIME; NOISE; FIELD;

D O I：

10.1103/PhysRevB.84.184504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the occurrence of multiple hopping and retrapping of a Brownian particle in a tilted washboard potential. The escape dynamic has been studied experimentally by measuring the switching current distributions as a function of temperature in a moderately damped NbN/MgO/NbN Josephson junction. At low temperatures the second moment of the distribution increases in agreement with calculations based on Kramers thermal activation regime. After a turnover temperature T*, the shape of the distributions starts changing and width decreases with temperature. We analyze the data through fit of the switching probability and Monte Carlo simulations and we find a good agreement with a model based on a multiple retrapping process.

引用

页数：6

共 10 条

[1] Measurement of thermoelectric effects in a thermal converter using a NbN/TiN/NbN Josephson junction array
Sasaki, H
Yamamori, H
Fujiki, H
Takahashi, K
Shoji, A
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2003, 52 (02) : 359 - 362
[2] Nonlinear noninertial response of a quantum Brownian particle in a tilted periodic potential to a strong ac force as applied to a point Josephson junction
Coffey, William T.
Kalmykov, Yuri P.
Titov, Serguey V.
Cleary, Liam
PHYSICAL REVIEW B, 2009, 79 (05)
[3] Diffusion coefficient and mobility of a Brownian particle in a tilted periodic potential
Sasaki, K
Amari, S
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2005, 74 (08) : 2226 - 2232
[4] EFFECTIVE-EIGENVALUE APPROACH TO THE NONLINEAR LANGEVIN EQUATION FOR THE BROWNIAN-MOTION IN A TILTED PERIODIC POTENTIAL - APPLICATION TO THE JOSEPHSON TUNNELING JUNCTION
COFFEY, WT
KALMYKOV, YP
MASSAWE, ES
PHYSICAL REVIEW E, 1993, 48 (01): : 77 - 87
[5] Nonlinear noninertial response of a Brownian particle in a tilted periodic potential to a strong ac force
Coffey, WT
Déjardin, JL
Kalmykov, YP
PHYSICAL REVIEW E, 2000, 61 (04): : 4599 - 4602
[6] Derivation of diffusion coefficient of a Brownian particle in tilted periodic potential from the coordinate moments
Zhang, Yunxin
PHYSICS LETTERS A, 2009, 373 (31) : 2629 - 2633
[7] Nonlinear noninertial response of a Brownian particle in a tilted periodic potential to a strong ac force
Coffey, W.T.
Déjardin, J.L.
Kalmykov, Yu. P.
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2000, 61 (04): : 4599 - 4602
[8] Thermally activated escape rate for a Brownian particle in a tilted periodic potential for all values of the dissipation
Coffey, W. T.
Kalmykov, Yu. P.
Titov, S. V.
Mulligan, B. P.
PHYSICAL REVIEW E, 2006, 73 (06)
[9] RESONANT ACTIVATION OF A BROWNIAN PARTICLE OUT OF A POTENTIAL WELL - MICROWAVE-ENHANCED ESCAPE FROM THE ZERO-VOLTAGE STATE OF A JOSEPHSON JUNCTION
DEVORET, MH
ESTEVE, D
MARTINIS, JM
CLELAND, A
CLARKE, J
PHYSICAL REVIEW B, 1987, 36 (01): : 58 - 73
[10] ON THE BROWNIAN-MOVEMENT OF A PARTICLE IN A TILTED COSINE POTENTIAL AND ITS APPLICATION TO THE CALCULATION OF THE CURRENT VOLTAGE CHARACTERISTICS OF JOSEPHSON-JUNCTIONS - USE OF CONTINUED-FRACTION METHODS
QUINN, K
JOURNAL OF MOLECULAR LIQUIDS, 1991, 49 : 187 - 199

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