Superconducting/magnetic Three-state Nanodevice for Memory and Reading Applications

被引：13

作者：

del Valle, J. ^{[1
]}

Gomez, A. ^{[1
]}

Gonzalez, E. M. ^{[1
,2
]}

Osorio, M. R. ^{[2
]}

Granados, D. ^{[2
]}

Vicent, J. L. ^{[1
,2
]}

机构：

[1] Univ Complutense, Fac CC Fis, Dept Fis Mat, E-28040 Madrid, Spain

[2] IMDEA Nanociencia, Madrid 28049, Spain

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

FILMS; ARRAY;

D O I：

10.1038/srep15210

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We present a simple nanodevice that can operate in two modes: i) non-volatile three-state memory and ii) reading device. The nanodevice can retain three well defined states -1, 0 and +1 and can operate in a second mode as a sensor for external magnetic fields. The nanodevice is fabricated with an array of ordered triangular-shaped nanomagnets embedded in a superconducting thin film gown on Si substrates. The device runs based on the combination of superconducting vortex ratchet effect (superconducting film) with the out of plane magnetization (nanomagnets). The input signals are ac currents and the output signal are dc voltages. The memory mode is realized without applying a magnetic field and the nanomagnet stray magnetic fields govern the effect. In the sensor mode an external magnetic field is applied. The main characteristic of this mode is that the output signal is null for a precise value of the external magnetic field that only depends on the fabrication characteristics of the nanodevice.

引用

页数：7

共 20 条

[1] Noise-enhanced performance of ratchet cellular automata [J].

Babic, D ;

Bechinger, C .

PHYSICAL REVIEW LETTERS, 2005, 94 (14)

[2] COMPOSITE FLUX-LINE LATTICES STABILIZED IN SUPERCONDUCTING FILMS BY A REGULAR ARRAY OF ARTIFICIAL DEFECTS [J].

BAERT, M ;

METLUSHKO, VV ;

JONCKHEERE, R ;

MOSHCHALKOV, VV ;

BRUYNSERAEDE, Y .

PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3269-3272

[3] A ratchet mechanism of transcription elongation and its control [J].

Bar-Nahum, G ;

Epshtein, V ;

Ruckenstein, AE ;

Rafikov, R ;

Mustaev, A ;

Nudler, E .

CELL, 2005, 120 (02) :183-193

[4] Probing the dynamic response of antivortex, interstitial and trapped vortex lattices on magnetic periodic pinning potentials [J].

Gomez, A. ;

Gonzalez, E. M. ;

Gilbert, D. A. ;

Milosevic, M. V. ;

Liu, Kai ;

Vicent, J. L. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2013, 26 (08)

[5] Control of dissipation in superconducting films by magnetic stray fields [J].

Gomez, A. ;

Gilbert, D. A. ;

Gonzalez, E. M. ;

Liu, Kai ;

Vicent, J. L. .

APPLIED PHYSICS LETTERS, 2013, 102 (05)

[6] Artificial Brownian motors: Controlling transport on the nanoscale [J].

Haenggi, Peter ;

Marchesoni, Fabio .

REVIEWS OF MODERN PHYSICS, 2009, 81 (01) :387-442

[7] Ratchet cellular automata [J].

Hastings, MB ;

Reichhardt, CJO ;

Reichhardt, C .

PHYSICAL REVIEW LETTERS, 2003, 90 (24) :4

[8] Visualizing domain wall and reverse domain superconductivity [J].

Iavarone, M. ;

Moore, S. A. ;

Fedor, J. ;

Ciocys, S. T. ;

Karapetrov, G. ;

Pearson, J. ;

Novosad, V. ;

Bader, S. D. .

NATURE COMMUNICATIONS, 2014, 5

[9] POTENTIAL DIFFERENCES IN MIXED STATE OF TYPE 2 SUPERCONDUCTORS [J].

JOSEPHSON, BD .

PHYSICS LETTERS, 1965, 16 (03) :242-+

[10] Nanoengineered magnetic-field-induced superconductivity [J].

Lange, M ;

Van Bael, MJ ;

Bruynseraede, Y ;

Moshchalkov, VV .

PHYSICAL REVIEW LETTERS, 2003, 90 (19) :4

← 1 2 →