Field-coupled computing in magnetic multilayers

Csaba, G.; Lugli, Paolo; Becherer, Markus; Schmitt‐Landsiedel, D.; Porod, Wolfgang

doi:10.1007/s10825-007-0157-3

Cited by 25 publications

(10 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Doing so, the free parameters are calculated to E 0 =k B T ¼ 60:4 and B s0 ¼ 63:9 mT. The result is displayed by means of percentiles in SFDs by means of the Arrhenius model (2). The pulses with t p ¼ 50 ms are excluded, as the field generation method is different: Additional in-plane fields due to inadequate adjustment of the external magnet cannot be excluded.…”

Section: Sfd Measurements Of Co/pt Magnetsmentioning

confidence: 99%

“…This leads to an alternative implementation of digital computation realized by field-coupled single-domain magnets with perpendicular magnetization: perpendicular Nanomagnetic Logic (pNML). It is promising for highly parallel, pipelined, dense and low power applications [2,3]. Electrical interconnects are reduced to a minimum as computation takes place by magnetic field coupling [4].…”

Section: Introduction: the Concept Of Nmlmentioning

confidence: 99%

See 1 more Smart Citation

Towards on-chip clocking of perpendicular Nanomagnetic Logic

Becherer

Kiermaier

Breitkreutz

et al. 2014

Solid-State Electronics

View full text Add to dashboard Cite

Section: Sfd Measurements Of Co/pt Magnetsmentioning

confidence: 99%

Section: Introduction: the Concept Of Nmlmentioning

confidence: 99%

Towards on-chip clocking of perpendicular Nanomagnetic Logic

Becherer

Kiermaier

Breitkreutz

et al. 2014

Solid-State Electronics

View full text Add to dashboard Cite

“…Basic elements of these systems are ferromagnetic, singledomain nanomagnets with either in-plane [2] or perpendicular magnetization [3] [4]. In this work, Co/Pt multilayer magnets with perpendicular crystalline anisotropy are favored, due to their higher thermal stability and larger design space in shape and switching field modification by focused ion beam (FIB) irradiation [5].…”

Section: Introductionmentioning

confidence: 99%

Programmable Input for Nanomagnetic Logic Devices

Kiermaier

Breitkreutz

Eichwald

et al. 2013

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract.A programmable magnetic input, based on the magnetic interaction of a soft and hard magnetic layer is presented for the first time. Therefore, a single-domain Co/Pt nanomagnet is placed on top of one end of a permalloy bar, separated by a thin dielectric layer. The permalloy bar of the introduced input structure is magnetized by weak easy-axis in-plane fields. Acting like a 'magnetic amplifier', the generated fringing fields of the permalloy pole are strong enough to control the magnetization of the superimposed Co/Pt nanomagnets, which have high crystalline perpendicular magnetic anisotropy. This magnetostatic interaction results in a shift of the hysteresis curve of the Co/Pt nanomagnet, measured by magneto-optical Kerr microscopy. The Co/Pt nanomagnet is fixed by the fringing field of the permalloy and thereby not affected by the magnetic power clock of the Nanomagnetic Logic system. MFM measurements verify the functionality of the programmable magnetic input structure. The fringing fields are extracted from micromagnetic simulations and are in good agreement with experimental results. The introduced input structure enables switching the logic functionality of the majority gate from NAND to NOR during runtime, offering programmable Nanomagnetic Logic.

show abstract

“…The working principle of NML has already been demonstrated for devices with in-plane magnetization made of Permalloy [1]. Our group investigates NML with perpendicular magnetization (NML-PM) and has already shown the feasibility of such devices and elementary structures [2,3]. Electrical in-and output have been demonstrated and temperature effects have been investigated [4,5].…”

Section: Introductionmentioning

confidence: 99%

Nanomagnetic logic: compact modeling of field-coupled computing devices for system investigations

et al. 2011

Self Cite

View full text Add to dashboard Cite

In this paper we investigate error rates of nanomagnetic logic devices with perpendicular magnetization by compact modeling. Two different types of nanomagnets for information propagation and logic computing are introduced. The switching behavior of field-coupled nanomagnets is measured and analyzed. A compact model is derived from physics and experimental results are applied to the magnetic compact model. General requirements for fabrication parameters and clocking fields for reliable operation are extracted. We perform simulations and measurements on single devices to demonstrate the accuracy of the macromodel. Simulations on complex systems show that the error rate of a field-coupled magnetic system strongly depends on the variation of the switching field and the strength of the coupling field between the nanomagnets. The error rate of a 1-bit full adder is investigated for varying dot parameters. The results demonstrate the importance of fast simulation tools for investigations on the design of nanomagnetic computing devices and systems.

show abstract

Field-coupled computing in magnetic multilayers

Cited by 25 publications

References 8 publications

Towards on-chip clocking of perpendicular Nanomagnetic Logic

Towards on-chip clocking of perpendicular Nanomagnetic Logic

Programmable Input for Nanomagnetic Logic Devices

Nanomagnetic logic: compact modeling of field-coupled computing devices for system investigations

Contact Info

Product

Resources

About