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Juan Carlos ROJAS

Researcher identifiers
  • IdHAL juan-carlos-rojas-sanchez
  • ResearcherId : N-9963-2015
  • IdRef : 224501712
  • ORCID 0000-0001-7044-2785
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Juan Carlos Rojas-Sanchez is currently a CNRS permanent researcher at Institute Jean Lamour (IJL), Nancy, France. He received his Bachelor in Physics in 1999 from the National University of Engineering (UNI), Lima, Peru, his Master in Physics in 2004 from Balseiro Institute, Bariloche, Argentina, and his Ph.D. in Physics in 2011 from Balseiro Institute (National University of Cuyo), Bariloche Atomic Center, Bariloche, Argentina. From 2011-2015, he was a postdoctoral fellow in *Laboratoire de Nanostructures et Magnetisme* INAC/CEA, SPINTEC, Institut Néel, and Unité Mixte de Physique CNRS/Thales, France. He joined the CNRS in October 2015 as a researcher in the Spintronics and Nanomagnetism group at Institute Jean Lamour (IJL). In 2018, he also became the Head of IJL’s micro and nanotechnologies competence center MiNaLor. His main research interests span from spintronics to spin-caloritronics and spin-orbitronics. He studies spin current, spin Hall effect, Edelstein effect, and spin-orbit torque with the aim to obtain more efficient, faster, and environmentally cleaner devices for memory, energy harvesting, and logic applications. He has over 50 publications in international peer-reviewed journals such as Nature Materials, Advanced Materials, Nature Communications, Nano Letters, and Physical Review Letters, 10 (10) as the first (second) author, and 14 as the corresponding author, with a total citation of more than 2720. He has also served as the session chair of several significant international conferences and co-chair or chair of [International Workshops in Spintronics]( **Education** - 2020 ***HDR*** French qualification, Lorraine University (France) - 2011 ***Ph.D. in Physics***, Insituto Balseiro, U. Cuyo, Bariloche (Argentina) - 1999 ***Bachelor*** ***in Physics***, National University of Engineering (UNI), Lima (Peru) **Employment and Professional Experience** - 2011-2013 ***Post-doc***, CEA-Grenoble (France). CEA-Eurotalents Marie-Curie Actions Fellow. - 2013-2015 ***Post-doc***, UMPhi CNRS/Thales (France). - 2015- ***CNRS permanent researcher***, Institute Jean Lamour (IJL), Nancy, France. "Chargé de récherche" **Institutional responsibilities** - 2018– Present **Head of the Micro and nanotechnology platform of Lorraine**, IJL’s CC-[MiNaLor]( Cleanroom facilities including a staff of 3 engineers. **Project leader**: - 2016 CNRS Cellule Energy (15 k€) - 2018-2021 Local Coordinator ANR [MISSION]( (202 k€) - 2020-2023 PI ANR JCJC [TOPTRONICS]( (256 k€) - 2021-2025 Local co-PI H2020 MSCA RISE [ULTIMATE-I]( (444.5 k€) **Supervision**: 2 post-doc, 6 Ph.D. students, 4 M2 students, and 2 M1 students, and Mentoring 10 international internship students (resulted in publications with most of them) from Chine (3), USA (2), Peru (4), Mexico (1) and Argentina (1) **Research records(ISI Web of Science, Dec 2022) and scientific communication** - **50** publications in international peer-reviewed journals including 1 Nat. Mater., 2 Adv. Materials, 2 Nat. Comm., 3 Nano Lett., 3 Phys. Rev. Lett, 4 Phys. Rev. Appl., 10 Phys. Rev. B and 7 Appl. Phys. Lett - **2729** citations (average 54.5 citations per article). 3842 citations in Google Scholar. - **4** highly cited papers (top 1% for the field and publication year). The first author in three of them and the corresponding author in the fourth one. Nat Comm. 2013, PRL 2014, PRL 2016, and Nat. Materials 2016. - **h-index**: 24 (26 in Google Scholar) - **29** invited talk at international conferences - **11** contributed talks at international conferences - **18** seminars at Universities and research laboratories **Awards**: - 2020: [CNRS Bronze Medal]( - 2019: City Medal, Chepen (hometown in Peru) **Organization of International Conferences**: - 2019: Co-chair of SPIN PERU, [International Workshop Spintronics 2019](, Ollantaytambo, Peru - 2022: chair of SPIN ARGENTINA, [International Workshop Spintronics 2022](, Bariloche, ARG


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Controlling the helicity of light by electrical magnetization switching

Pambiang Abel Dainone , Nicholas Figueiredo Prestes , Pierre Renucci , Alexandre Bouché , Martina Morassi
Nature, 2024, 627 (8005), pp.783-788. ⟨10.1038/s41586-024-07125-5⟩
Journal articles hal-04530065v1
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Spin-to-charge conversion by spin pumping in sputtered polycrystalline Bi x Se 1 − x

Isabel C. Arango , Alberto Anadón , Silvestre Novoa , van Tuong Pham , Won Young Choi
Physical Review Materials, 2023, 7, pp.075402. ⟨10.1103/PhysRevMaterials.7.075402⟩
Journal articles hal-04537744v1
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Isotropic spin and inverse spin Hall effect in epitaxial (111)-oriented Pt/Co bilayers

Adrián Gudín , Alberto Anadón , Iciar Arnay , Rubén Guerrero , Julio Camarero
Physical Review Materials, 2023, 7 (12), pp.124412. ⟨10.1103/PhysRevMaterials.7.124412⟩
Journal articles hal-04537763v1
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Testing the topological insulator behavior of half-Heusler PdYBi and PtYBi (111) epitaxial thin films

Victor Palin , Alberto Anadón , Stéphane Andrieu , Yannick Fagot-Revurat , Claudia de Melo
Physical Review Materials, 2023, 7 (10), pp.104203. ⟨10.1103/physrevmaterials.7.104203⟩
Journal articles hal-04411321v1

Modulation of magneto-dynamic properties of permalloy/holmium heterostructures with antiferromagnetic coupled interface

Mingming Tian , Qian Chen , Ping Kwan Johnny Wong , Ruobai Liu , Fabien Silly
Applied Physics Letters, 2023, 123 (26), ⟨10.1063/5.0169500⟩
Journal articles cea-04368599v1

Patterning nucleation area by femtosecond laser in exchange-coupled systems

P Vallobra , Y Xu , H Wang , Grégory Malinowski , M Hehn
Applied Physics Letters, 2023, 123 (11), pp.112406. ⟨10.1063/5.0157754⟩
Journal articles hal-04276647v1
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Spin transport properties of spinel vanadate-based heterostructures

Antonio Peña Corredor , Alberto Anadón , Laurent Schlur , Jérôme Robert , Héloïse Damas
Applied Physics Letters, 2023, 123 (7), ⟨10.1063/5.0165642⟩
Journal articles hal-04537759v1
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Thermal Spin-Current Generation in the Multifunctional Ferrimagnet Ga0.6Fe1.4O3

Alberto Anadón , Elodie Martin , Suvidyakumar Homkar , Benjamin Meunier , Maxime Vergés
Physical Review Applied, 2022, 18, pp.054087. ⟨10.1103/physrevapplied.18.054087⟩
Journal articles hal-04308415v1

Field-free current-induced magnetization switching in GdFeCo: A competition between spin–orbit torques and Oersted fields

Jean-Loïs Bello , Yassine Quessab , Jun-Wen Xu , Maxime Vergès , Héloïse Damas
Journal of Applied Physics, 2022, 132 (8), ⟨10.1063/5.0091944⟩
Journal articles hal-04370022v1
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Ferrimagnet GdFeCo Characterization for Spin‐Orbitronics: Large Field‐Like and Damping‐Like Torques

Héloïse Damas , Alberto Anadon , David Céspedes-Berrocal , Junior Alegre-Saenz , Jean-Loïs Bello
physica status solidi (RRL) - Rapid Research Letters, inPress, 16 (6), pp.2200035. ⟨10.1002/pssr.202200035⟩
Journal articles hal-03858944v1
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Current-induced spin torques on single GdFeCo magnetic layers

David Céspedes-Berrocal , Heloïse Damas , S. Petit-Watelot , David Maccariello , Ping Tang
Advanced Materials, 2021, ⟨10.1002/adma.202007047⟩
Journal articles hal-03144856v1
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Unveiling transport properties of Co2MnSi Heusler epitaxial thin films with ultra-low magnetic damping

C. de Melo , C. Guillemard , A.M. Friedel , V. Palin , J.-C. Rojas-Sánchez
Applied Materials Today, 2021, 25, pp.101174. ⟨10.1016/j.apmt.2021.101174⟩
Journal articles hal-03399352v1
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Spin current transport in hybrid Pt / multifunctional magnetoelectric Ga0.6Fe1.4O3 bilayers

Suvidyakumar Homkar , Elodie Martin , Benjamin Meunier , Alberto Anadon-Barcelona , Corinne Bouillet
ACS Applied Electronic Materials, 2021, 3 (10), pp.4433-4440. ⟨10.1021/acsaelm.1c00586⟩
Journal articles hal-03485345v1
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Engineering the spin conversion in graphene monolayer epitaxial structures

Alberto Anadón , Adrián Gudín , Rubén Guerrero , Iciar Arnay , Alejandra Guedeja-Marron
APL Materials, 2021, 9, ⟨10.1063/5.0048612⟩
Journal articles hal-03372205v1
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Determination of spin Hall angle, spin mixing conductance, and spin diffusion length in CoFeB/Ir for spin-orbitronic devices

T. Fache , J Rojas-Sánchez , L. Badie , S Mangin , S. Petit-Watelot
Physical Review B, 2020, 102, ⟨10.1103/physrevb.102.064425⟩
Journal articles hal-02999938v1
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Spin–orbit torque switching of a ferromagnet with picosecond electrical pulses

Kaushalya Jhuria , Julius Hohlfeld , Akshay Pattabi , Elodie Martin , Aldo Ygnacio Arriola Córdova
Nature Electronics, 2020, ⟨10.1038/s41928-020-00488-3⟩
Journal articles hal-02988288v1
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Ultra-low magnetic damping in Co 2 Mn-based Heusler compounds: promising materials for spintronic

C Guillemard , S. Petit-Watelot , L. Pasquier , D. Pierre , J. Ghanbaja
Physical Review Applied, 2019, 11, pp.064009. ⟨10.1103/PhysRevApplied.11.064009⟩
Journal articles hal-02134870v1
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Polycrystalline Co$_2$ Mn-based Heusler thin films with high spin polarization and low magnetic damping

C. Guillemard , S. Petit-Watelot , J.-C. Rojas-Sánchez , J. Hohlfeld , J. Ghanbaja
Applied Physics Letters, 2019, 115 (17), pp.172401. ⟨10.1063/1.5121614⟩
Journal articles hal-04064684v1

Spin‐Orbit Torque Switching of a Nearly Compensated Ferrimagnet by Topological Surface States

Hao Wu , Yong Xu , Peng Deng , Quanjun Pan , Seyed Armin Razavi
Advanced Materials, 2019, 2019, pp.1901681. ⟨10.1002/adma.201901681⟩
Journal articles hal-02184543v1

Spin-dependent transport characterization in metallic lateral spin valves using one-dimensional and three-dimensional modeling

P. Laczkowski , M. Cosset-Cheneau , W. Savero-Torres , V. T. Pham , H. Jaffres
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2019, 99 (134436), ⟨10.1103/PhysRevB.99.134436⟩
Journal articles hal-02060993v1
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Compared Efficiencies of Conversions between Charge and Spin Current by Spin-Orbit Interactions in Two-and Three-Dimensional Systems

J.-C Rojas-Sánchez , A. Fert
Physical Review Applied, inPress, 11, ⟨10.1103/PhysRevApplied.11.054049⟩
Journal articles hal-02405851v1
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Evidence of Pure Spin-Current Generated by Spin Pumping in Interface-Localized States in Hybrid Metal–Silicon–Metal Vertical Structures

Carolina Cerqueira , Jian Yin Qin , Huong Dang , Abdelhak Djeffal , Jc Le Breton
Nano Letters, 2019, 19 (1), pp.90-99. ⟨10.1021/acs.nanolett.8b03386⟩
Journal articles hal-01987996v1
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Strain-Enhanced Charge-to-Spin Conversion in Ta/Fe/Pt Multilayers Grown on Flexible Mica Substrate

Er Liu , T. Fache , D Cespedes-Berrocal , Zhi Zhang , S. Petit-Watelot
Physical Review Applied, 2019, 12, ⟨10.1103/PhysRevApplied.12.044074⟩
Journal articles hal-02405856v1
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Thermal Contribution to the Spin-Orbit Torque in Metallic-Ferrimagnetic Systems

Thai Ha Pham , Soong-Geun Je , Pierre Vallobra , Thibaud Fache , Daniel Lacour
Physical Review Applied, 2018, 9, pp.064032. ⟨10.1103/PhysRevApplied.9.064032⟩
Journal articles hal-01864006v1
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Independence of spin-orbit torques from the exchange bias direction in N i 81 F e 19 / IrMn bilayers

Hilal Saglam , J. Carlos Carlos Rojas-Sanchez , Sébastien Petit , Michel Hehn , Wei Zhang
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2018, 98 (9), pp.094407. ⟨10.1103/physrevb.98.094407⟩
Journal articles hal-02086049v2
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Charge-spin current conversion in high quality epitaxial Fe/Pt systems: Isotropic spin Hall angle along different in-plane crystalline directions

C Guillemard , S. Petit-Watelot , S. Andrieu , J.-C. Rojas-Sánchez
Applied Physics Letters, 2018, 113, ⟨10.1063/1.5079236⟩
Journal articles hal-02999961v1
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Nonmonotonic aftereffect measurements in perpendicular synthetic ferrimagnets

T. Fache , H. S Tarazona , J. Liu , G. L’vova , M J Applegate
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2018, 98 (6), pp.064410. ⟨10.1103/physrevb.98.064410⟩
Journal articles hal-02011615v1
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Creation of magnetic skyrmion bubble lattices by ultrafast laser in ultrathin films

Soong-Geun Je , Pierre Vallobra , Titiksha Srivastava , Juan-Carlos Rojas-Sanchez , Thai Ha Pham
Nano Letters, 2018, 18 (11), pp.7362-7371. ⟨10.1021/acs.nanolett.8b03653⟩
Journal articles hal-01903085v1
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Spin-orbit torque-induced switching in ferrimagnetic alloys: Experiments and modeling

Soong-Geun Je , Juan-Carlos Rojas-Sanchez , Thai Ha Pham , Pierre Vallobra , Grégory Malinowski
Applied Physics Letters, 2018, 112 (6), pp.62401 - 62401. ⟨10.1063/1.5017738⟩
Journal articles hal-01764558v1
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Manipulating exchange bias using all-optical helicity-dependent switching

P. Vallobra , T. Fache , Y. Xu , L. Zhang , G. Malinowski
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (14), pp.329-336. ⟨10.1103/PhysRevB.96.144403⟩
Journal articles hal-01624235v1
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Large enhancement of the spin Hall effect in Au by scattering with side-jump on Ta impurities

P Laczkowski , Y Fu , H Yang , J.-C. Rojas-Sánchez , P Noel
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (14), pp.140405. ⟨10.1103/PhysRevB.96.140405⟩
Journal articles hal-01579001v1
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Excess velocity of magnetic domain walls close to the depinning field

Nirvana Caballero , Iván Fernández Aguirre , Lucas J Albornoz , Alejandro Kolton , J.-C. Rojas-Sánchez
Physical Review B, 2017, 96, ⟨10.1103/PHYSREVB.96.224422⟩
Journal articles hal-02999970v1

Spin–Charge Conversion Phenomena in Germanium

Simón Oyarzún , Fabien Rortais , Juan-Carlos Rojas-Sanchez , Federico Bottegoni , Piotr Laczkowski
Journal of the Physical Society of Japan, 2017, 86 (1), ⟨10.7566/JPSJ.86.011002⟩
Journal articles hal-01614038v1

Evidence for spin to charge conversion in GeTe(111)

C. Rinaldi , J. C. Rojas-Sánchez , R. Wang , Y. Fu , S. Oyarzún
APL Materials, 2016, 4 (3), ⟨10.1063/1.4941276⟩
Journal articles hal-01614024v1

Highly efficient and tunable spin-to-charge conversion through Rashba coupling at oxide interfaces

E. Lesne , Yu Fu , S. Oyarzún , J. C. Rojas-Sánchez , D. C. Vaz
Nature Materials, 2016, 15 (12), pp.1261 - 1266. ⟨10.1038/nmat4726⟩
Journal articles hal-01614031v1

Evidence for spin-to-charge conversion by Rashba coupling in metallic states at the Fe/Ge(111) interface

S. Oyarzún , A. Nandy , F. Rortais , C. Rojas-Sánchez , M. Dau
Nature Communications, 2016, 7, ⟨10.1038/ncomms13857⟩
Journal articles hal-01614036v1

Spin transport in p -type germanium

F Rortais , S. Oyarzún , F. Bottegoni , J Rojas-Sánchez , P Laczkowski
Journal of Physics: Condensed Matter, 2016, 28 (16), ⟨10.1088/0953-8984/28/16/165801⟩
Journal articles hal-01614027v1

Very large domain wall velocities in Pt/Co/Gd trilayers with Dzyaloshinskii-Moriya interaction

Thai Ha Pham , J. Vogel , J. Sampaio , M. Vaňatka , J.-C. Rojas-Sanchez
EPL - Europhysics Letters, 2016, 113 (6), pp.67001. ⟨10.1209/0295-5075/113/67001⟩
Journal articles hal-01275326v1

Spin to Charge Conversion at Room Temperature by Spin Pumping into a New Type of Topological Insulator: α -Sn Films

J.C. Rojas-Sánchez , S. Oyarzún , Y. Fu , A. Marty , C. Vergnaud
Physical Review Letters, 2016, 116 (9), ⟨10.1103/PhysRevLett.116.096602⟩
Journal articles hal-01614026v1
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Perpendicular magnetization reversal in Pt/[Co/Ni]3/Al multilayers via the spin Hall effect of Pt

J.-C Rojas-Sánchez , P. Laczkowski , J. Sampaio , S. Collin , K. Bouzehouane
Applied Physics Letters, 2016, 108
Journal articles hal-02076530v1

Velocity asymmetry of Dzyaloshinskii domain walls in the creep and flow regimes

Marek Vanatka , Juan-Carlos Rojas-Sanchez , Jan Vogel , Marlio Bonfim , André Thiaville
Journal of Physics: Condensed Matter, 2015, 27 (32), pp.326002. ⟨10.1088/0953-8984/27/32/326002⟩
Journal articles hal-01140893v1

Evaluation of spin diffusion length of AuW alloys using spin absorption experiments in the limit of large spin-orbit interactions

Piotr Laczkowski , Henri Jaffrès , Williams Savero Torres , J. C. Rojas-Sánchez , Yu Fu
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2015, 92 (21), pp.214405. ⟨10.1103/PhysRevB.92.214405⟩
Journal articles hal-01615212v1

Experimental evidences of a large extrinsic spin Hall effect in AuW alloy

P. Laczkowski , J.-C. Rojas-Sánchez , W. Savero-Torres , H. Jaffrès , N. Reyren
Applied Physics Letters, 2014, 104 (14), pp.142403. ⟨10.1063/1.4870835⟩
Journal articles hal-02042880v1

Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces

J.-C. Rojas-Sánchez , N. Reyren , P. Laczkowski , W. Savero , J.P. Attané
Physical Review Letters, 2014, 112 (10), ⟨10.1103/PhysRevLett.112.106602⟩
Journal articles hal-02042890v1

Switchable Spin-Current Source Controlled by Magnetic Domain Walls

W. Savero Torres , P. Laczkowski , V. Nguyen , J. Rojas Sanchez , Laurent Vila
Nano Letters, 2014, 14 (7), pp.4016-4022. ⟨10.1021/nl501453p⟩
Journal articles hal-02042863v1

Spin-to-charge conversion using Rashba coupling at the interface between non-magnetic materials

J.C. Rojas Sanchez , Laurent Vila , G. Desfonds , S. Gambarelli , J. Attané
Nature Communications, 2013, 4 (1), ⟨10.1038/ncomms3944⟩
Journal articles hal-02042921v1

Transition from spin accumulation into interface states to spin injection in silicon and germanium conduction bands

Abhinav Jain , Juan-Carlos Rojas-Sanchez , Murat Cubukcu , Julian Peiro , Jean-Christophe Le Breton
The European Physical Journal B: Condensed Matter and Complex Systems, 2013, 86, pp.140. ⟨10.1140/EPJB/E2013-31067-7⟩
Journal articles hal-00921473v1
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Crossover from Spin Accumulation into Interface States to Spin Injection in the Germanium Conduction Band

A. Jain , C. Rojas-Sánchez , M. Cubukcu , J. Peiro , J. C. Le Breton
Physical Review Letters, 2012, 109, pp.106603. ⟨10.1103/PhysRevLett.109.106603⟩
Journal articles hal-01683673v1
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HDR qualification. Different spin current sources: from interfaces to bulk materials

J.-C. Rojas-Sánchez
Condensed Matter [cond-mat]. Université de Lorraine, 2020
Habilitation à diriger des recherches tel-03092237v1

Electronic, magnetic and structural properties of epitaxial Co2MnZ (Z=Al, Si, Ga, Ge, Sn, Sb) Heusler compounds

C. Guillemard , S. Petit-Watelot , F. Bertran , A. M Bataille , J.-C. Rojas-Sánchez
64th annual conference on Magnetism and Magnetic Materials, Nov 2019, Las Vegas (NV), United States
Conference papers hal-04064974v1
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Co$_2$ Mn-based Heusler compounds for spintronics: Chemical order and interplay between the magnetic damping and the underlying electronic structure

C. Guillemard , A. M. Bataille , S. Petit-Watelot , J.-C. Rojas-Sánchez , F. Bertran
Colloque Louis Néel XIX, May 2019, Toulouse, France
Conference papers hal-04066240v1
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Cobalt-based Heusler alloys for spintronics

C. Guillemard , S. Petit-Watelot , J.-C. Rojas-Sánchez , L. Pasquier , A. M. Bataille
M-SNOWS 2018 - Magnetic Single Nano-Object Workshop & School, Université de Lorraine, Sep 2018, Nancy, France
Conference papers hal-04066259v1
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Epitaxial cobalt-based Heusler alloys for spintronic applications: Elaboration, structural and magnetic investigation

C. Guillemard , F. Bertran , A. Bataille , P. Le Fevre , S. Petit-Watelot
GP-SPIN : Prospects of future Spintronics 2017, Tohoku University, Oct 2017, Sendai, Japan
Conference papers hal-04066228v1
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Spin Hall effect in AuW alloys

Piotr Laczkowski , Juan Carlos Rojas-Sánchez , Yu Fu , Williams Savero-Torres , Nicolas Reyren
SPIE 9931, Spintronics IX, Aug 2016, San Diego, United States. pp. 993108, ⟨10.1117/12.2238694⟩
Conference papers cea-01511834v1
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Spin pumping and inverse spin Hall effect in platinum and other 5 d metals: the essential role of spin-memory loss and spin-current discontinuities at interfaces

J.-C. Rojas-Sánchez , N. Reyren , P. Laczkowski , W. Savero , J.-P Attané
SPIE NanoScience + Engineering, Aug 2014, San Diego, France. pp.916729, ⟨10.1117/12.2059646⟩
Conference papers hal-02076508v1