Terahertz RAdio communication using high ANistropy SPIn torque REsonators

Project Information

TRANSPIRE

Grant agreement ID: 737038

DOI 10.3030/737038

Project closed

EC signature date 13 December 2016

Start date 1 January 2017

End date 30 September 2021

Funded under

• EXCELLENT SCIENCE - Future and Emerging Technologies (FET)

Total cost € 4 430 382,50

EU contribution € 4 430 382,50

Coordinated by

THE PROVOST, FELLOWS, FOUNDATION SCHOLARS & THE OTHER MEMBERS OF BOARD, OF THE COLLEGE OF THE HOLY & UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN
Ireland

Deliverables

Documents, reports (6)

Seed layer report for ferrimagnetic films

Report on growth parameters for conducting (and insulating) seed-layers with in-plane epitaxy for low-moment materials established

Reconcile experiment and theory for new materials

Report on the comparison of experimental and theoretical data Identify key mechanisms and descriptors and propose new candidate materials

Adiabatic scattering in MR devices

Report on the ratio of adiabatic to nonadiabatic scattering in GMR or TMRlike structures using quasiDC electronic transport measurements including preliminary characterization of singlelayer films

First GMR/TMR measurement

Measurement of initial GMR/TMR in a patterned multi-layer from TCD

Field dispersion of resonance > 500 GHz

Measurement of resonant excitations above 0.5 THz in a candidate Heusler film and characterisation of the dispersion as a function of applied field

ST in devices including phonon/magnon dispersion

ab initio investigation of candidate devices including electrode phonon and magnon dispersion as a function of spin-angle including spin-torque under high applied bias

Demonstrators, pilots, prototypes (8)

FMR below 50 GHz on a ferrimagnet

Report on the FMR dispersion of a tailored ferrimagnet with a resonance frequency < 50 GHz

TMR >50% or GMR > 5% in a device

DCTMR in excess of 50 or DCGMR 5 using MRG or another material with Ms 20 kAm

Spin transport theory in ferrimagnets/normal metals

Establish the nature, magnitude, and microscopic details of spin-torque and spin-pumping between low-moment ferrimagnets and normal metals

Proof-of-concept: Spin-pumping from a ferrimagnet

Proofofconcept Spinpumping from a ferrimagnet with resonance frequency 50GHz into a highZ metal and report the largest spin Hall angles

Film with Ms < 100 kA/m, P > 60% on high-Z seed

Blanket films with Ms tuneable by temperature or doping (-100 kA/m < Ms < 100 kA/m) with a spin polarization P > 60 % grown on high-Z metal with interface roughness < 0.5 nm for spin-pumping experiments

Zero-field resonant excitation of order 0.5 THz

Resonant excitation in zero-field of an ferrimagnet film with a resonance frequency of order 0.5 THz

Integration of CPP-TMR at the ELBE facility

Design of a measurement geometry that allows the contacting of patterned devices inside the setup at TELBE with first goal of insitu measurement of a large area 100 m GMRTMR device

Calculation of pumped spin currents in THz-range

Determine spin dynamics and pumped spin currents driven in the THz and subTHz range

Websites, patent fillings, videos etc. (4)

Big Data Workshop

Workshop and exhibition on the social implications Big Data through the Science Gallery

Kick-off meeting w/media

Kick off meeting organized w/media announcement (with timetable of 6-monthly face-to-face meetings)

Website (with logo) operational

Operational website with logo, public front end and measures to ensure regular updates

Public/Academic/Industrial Science Fair

Organization of a Science Fair involving TRANSPIRE and related ICT projects targeting the academic community industrial RD units general public with the aim of establishing innovative future H2020 collaborations beyond TRANSPIRE as well as industrial engagement to take the technology to TRL 46

Open Research Data Pilot (1)

Data Management Plan

Establishment of a draft Data Management Plan for all datasets

Publications

Peer reviewed articles (16)

Magnetization and anisotropy of cobalt ferrite thin films

Author(s): F. Eskandari, S. B. Porter, M. Venkatesan, P. Kameli, K. Rode, J. M. D. Coey
Published in: Physical Review Materials, Issue 1/7, 2017, ISSN 2475-9953
Publisher: American Physical Society
DOI: 10.1103/PhysRevMaterials.1.074413

Magnetic Dead Layers in La 0.7 Sr 0.3 MnO 3 Revisited

Author(s): S. B. Porter, M. Venkatesan, P. Dunne, B. Doudin, K. Rode, J. M. D. Coey
Published in: IEEE Transactions on Magnetics, Issue 53/11, 2017, Page(s) 1-4, ISSN 0018-9464
Publisher: Institute of Electrical and Electronics Engineers
DOI: 10.1109/TMAG.2017.2731124

Structure, site-specific magnetism, and magnetotransport properties of epitaxial D 0 22 -structure Mn 2

Author(s): Davide Betto, Yong-Chang Lau, Kiril Borisov, Kurt Kummer, N. B. Brookes, Plamen Stamenov, J. M. D. Coey, Karsten Rode
Published in: Physical Review B, Issue 96/2, 2017, ISSN 2469-9950
Publisher: Americal Physical Society
DOI: 10.1103/PhysRevB.96.024408

Study of the Effect of Annealing on the Properties of Mn 2 Ru <italic>x</italic> Ga Thin Films

Author(s): K. E. Siewierska, G. Atcheson, K. Borisov, M. Venkatesan, K. Rode, J. M. D. Coey
Published in: IEEE Transactions on Magnetics, Issue 53/11, 2017, Page(s) 1-5, ISSN 0018-9464
Publisher: Institute of Electrical and Electronics Engineers
DOI: 10.1109/TMAG.2017.2704778

Exchange coupling of a perpendicular ferromagnet to a half-metallic compensated ferrimagnet via a thin hafnium interlayer

Author(s): Kiril Borisov, Gwenaël Atcheson, Gavin D'Arcy, Yong-Chang Lau, J. M. D. Coey, Karsten Rode
Published in: Applied Physics Letters, Issue 111/10, 2017, Page(s) 102403, ISSN 0003-6951
Publisher: American Institute of Physics
DOI: 10.1063/1.5001172

Spin pumping and inverse spin Hall voltages from dynamical antiferromagnets

Author(s): Øyvind Johansen, Arne Brataas
Published in: Physical Review B, Issue 95/22, 2017, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/PhysRevB.95.220408

Imaging Domains in a Zero-Moment Half Metal

Author(s): K. E. Siewierska, N. Teichert, R. Schafer, J. M. D. Coey
Published in: IEEE Transactions on Magnetics, 2018, Page(s) 1-4, ISSN 0018-9464
Publisher: Institute of Electrical and Electronics Engineers
DOI: 10.1109/TMAG.2018.2869016

Magneto-optic Kerr effect in a spin-polarized zero-moment ferrimagnet

Author(s): Karsten Fleischer, Naganivetha Thiyagarajah, Yong-Chang Lau, Davide Betto, Kiril Borisov, Christopher C. Smith, Igor V. Shvets, J. M. D. Coey, Karsten Rode
Published in: Physical Review B, Issue 98/13, 2018, Page(s) 134445, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/PhysRevB.98.134445

Magnetocrystalline anisotropy and exchange probed by high-field anomalous Hall effect in fully compensated half-metallic Mn 2 Ru x Ga thin films

Author(s): Ciarán Fowley, Karsten Rode, Yong-Chang Lau, Naganivetha Thiyagarajah, Davide Betto, Kiril Borisov, Gwenaël Atcheson, Erik Kampert, Zhaosheng Wang, Ye Yuan, Shengqiang Zhou, Jürgen Lindner, Plamen Stamenov, J. M. D. Coey, Alina Maria Deac
Published in: Physical Review B, Issue 98/22, 2018, Page(s) 220406, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/physrevb.98.220406

Magnetic field dependence of antiferromagnetic resonance in NiO

Author(s): Zhe Wang, S. Kovalev, N. Awari, Min Chen, S. Germanskiy, B. Green, J.-C. Deinert, T. Kampfrath, J. Milano, M. Gensch
Published in: Applied Physics Letters, Issue 112/25, 2018, Page(s) 252404, ISSN 0003-6951
Publisher: American Institute of Physics
DOI: 10.1063/1.5031213

Selective THz control of magnetic order: new opportunities from superradiant undulator sources

Author(s): S Kovalev, Zhe Wang, J-C Deinert, N Awari, M Chen, B Green, S Germanskiy, T V A G de Oliveira, J S Lee, A Deac, D Turchinovich, N Stojanovic, S Eisebitt, I Radu, S Bonetti, T Kampfrath, M Gensch
Published in: Journal of Physics D: Applied Physics, Issue 51/11, 2018, Page(s) 114007, ISSN 0022-3727
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6463/aaac75

Flat Bands, Indirect Gaps, and Unconventional Spin-Wave Behavior Induced by a Periodic Dzyaloshinskii-Moriya Interaction

Author(s): R. A. Gallardo, D. Cortés-Ortuño, T. Schneider, A. Roldán-Molina, Fusheng Ma, R. E. Troncoso, K. Lenz, H. Fangohr, J. Lindner, P. Landeros
Published in: Physical Review Letters, Issue 122/6, 2019, Page(s) 067204, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.122.067204

Antiferromagnetic single-layer spin-orbit torque oscillators

Author(s): Roberto E. Troncoso, Karsten Rode, Plamen Stamenov, J. Michael D. Coey, Arne Brataas
Published in: Physical Review B, Issue 99/5, 2019, Page(s) 054433, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/PhysRevB.99.054433

Effect of insertion layer on electrode properties in magnetic tunnel junctions with a zero-moment half-metal

Author(s): Aleksandra Titova, Ciarán Fowley, Eugene Clifford, Yong-Chang Lau, Kiril Borisov, Davide Betto, Gwenael Atcheson, René Hübner, Chi Xu, Plamen Stamenov, Michael Coey, Karsten Rode, Jürgen Lindner, Jürgen Fassbender, Alina Maria Deac
Published in: Scientific Reports, Issue 9/1, 2019, Page(s) 4020, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-019-40609-3

Magnetization dynamics of the compensated ferrimagnet Mn 2 Ru x Ga

Author(s): G. Bonfiglio, K. Rode, K. Siewerska, J. Besbas, G. Y. P. Atcheson, P. Stamenov, J. M. D. Coey, A. V. Kimel, Th. Rasing, A. Kirilyuk
Published in: Physical Review B, Issue 100/10, 2019, ISSN 2469-9950
Publisher: APS
DOI: 10.1103/physrevb.100.104438

Magnon decay theory of Gilbert damping in metallic antiferromagnets

Author(s): Haakon T. Simensen, Akashdeep Kamra, Roberto E. Troncoso, Arne Brataas
Published in: Physical Review B, Issue 101/2, 2020, ISSN 2469-9950
Publisher: APS
DOI: 10.1103/physrevb.101.020403