Deung-Jang Choi

Ikerbasque Research Associate, Materials Physics Center (CSIC-UPV/EHU)

Ikerbasque Research Associate at CFM-MPC.

Research line:

Atomic devices on superconductors - First steps in topological quantum computation.

Alexander von Humboldt Research Fellow (2012-2014), Marie Skłodowska-Curie actions - Research Fellow (2015-2017).

Previous research experience at Ewha Womans University (Korea), Massachusetts Institute of Technology (USA), Institut de physique et de chimie des materiaux de strasbourg (IPCMS-CNRS) (France), Max Planck Institute for the Structure and Dynamics of Matter (Germany), and CIC nanoGUNE (Spain).

PhD in Physics and Chemical physics (2012) from Université de Strasbourg, France.

Publications
Congresses & Proceedings

2024

Editorial / Unravelling topological states in quantum spin chains

Nature Nanotechnology

D.-J. Choi & D. Bercioux

Note / Unravelling topological states in quantum spin chains

Nature Nanotechnology

Choi, D.J.; Bercioux, D.

2023

Article / An atomic-scale multi-qubit platform

Science

Wang, Y.; Chen, Y.; Bui, H.T.; Wolf, C.; Haze, M.; Mier, C.; Kim, J.; Choi, D.J.; Lutz, C.P.; Bae, Y.; Phark, S.H.; Heinrich, A.J.

2022

Article / Moiré dispersion of edge states in spin chains on superconductors

Physical Review Research

Mier, C.; Choi, D.J.; Lorente, N.

2021

Article / Superconducting Scanning Tunneling Microscope Tip to Reveal Sub-millielectronvolt Magnetic Energy Variations on Surfaces

The Journal of Physical Chemistry Letters

Cristina Mier, Benjamin Verlhac, Léo Garnier, Roberto Robles, Laurent Limot, Nicolás Lorente, Deung-Jang Choi

Article / Atomic manipulation of in-gap states in the β−Bi2Pd superconductor

Physical Review B

Cristina Mier, Jiyoon Hwang, Jinkyung Kim, Yujeong Bae, Fuyuki Nabeshima, Yoshinori Imai, Atsutaka Maeda, Nicolás Lorente, Andreas Heinrich, and Deung-Jang Choi

Article / Calculations of in-gap states of ferromagnetic spin chains on s-wave wide-band superconductors

Physical Review B

Mier, C.; Choi, D.J.; Lorente, N.

Article / Spin resonance amplitude and frequency of a single atom on a surface in a vector magnetic field

Physical Review B

Kim, J.; Jang, W.J.; Bui, T.H.; Choi, D.J.; Wolf, C.; Delgado, F.; Chen, Y.; Krylov, D.; Lee, S.; Yoon, S.; Lutz, C.P.; Heinrich, A.J.; Bae, Y.

Article / Atomic manipulation of in-gap states in the β-Bi2Pd superconductor

Physical Review B

Mier, C.; Hwang, J.; Kim, J.; Bae, Y.; Nabeshima, F.; Imai, Y.; Maeda, A.; Lorente, N.; Heinrich, A.; Choi, D.J.

Article / Superconducting Scanning Tunneling Microscope Tip to Reveal Sub-millielectronvolt Magnetic Energy Variations on Surfaces

Journal of Physical Chemistry Letters

Mier, C.; Verlhac, B.; Garnier, L.; Robles, R.; Limot, L.; Lorente, N.; Choi, D.J.

2020

Article / Vibron-assisted spin excitation in a magnetically anisotropic molecule

Nature Communications

Bachellier, N.; Verlhac, B.; Garnier, L.; Zaldívar, J.; Rubio-Verdú, C.; Abufager, P.; Ormaza, M.; Choi, D.J.; Bocquet, M.L.; Pascual, J.I.; Lorente, N.; Limot, L.

Article / Visualization of Multifractal Superconductivity in a Two-Dimensional Transition Metal Dichalcogenide in the Weak-Disorder Regime

Nano Letters

Rubio-Verdú, C.; Garcĺa-Garcĺa, A.M.; Ryu, H.; Choi, D.J.; Zaldĺvar, J.; Tang, S.; Fan, B.; Shen, Z.X.; Mo, S.K.; Pascual, J.I.; Ugeda, M.M.

2019

Article / Single spin localization and manipulation in graphene open-shell nanostructures

Nature Communications

Li, J.; Sanz, S.; Corso, M.; Choi, D.J.; Peña, D.; Frederiksen, T.; Pascual, J.I.

Article / Coexistence of Elastic Modulations in the Charge Density Wave State of 2 H-NbSe 2

Nano Letters

Guster, B.; Rubio-Verdú, C.; Robles, R.; Zaldívar, J.; Dreher, P.; Pruneda, M.; Silva-Guillén, J.Á.; Choi, D.J.; Pascual, J.I.; Ugeda, M.M.; Ordejón, P.; Canadell, E.

Article / Colloquium: Atomic spin chains on surfaces

Reviews of Modern Physics

Choi, D.J.; Lorente, N.; Wiebe, J.; Von Bergmann, K.; Otte, A.F.; Heinrich, A.J.

2018

Chapter / Handbook of Materials Modeling Applications: Current and Emerging Materials

Wanda Andreoni and Sidney Yip

Deung-Jang Choi and Nicolás Lorente

Article / Orbital-selective spin excitation of a magnetic porphyrin

Communications Physics

Rubio-Verdú, C.; Sarasola, A.; Choi, D.J.; Majzik, Z.; Ebeling, R.; Calvo, M.R.; Ugeda, M.M.; Garcia-Lekue, A.; Sánchez-Portal, D.; Pascual, J.I.

Article / Influence of Magnetic Ordering between Cr Adatoms on the Yu-Shiba-Rusinov States of the β-Bi2Pd Superconductor

Physical Review Letters

Choi, D.J.; Fernández, C.G.; Herrera, E.; Rubio-Verdú, C.; Ugeda, M.M.; Guillamón, I.; Suderow, H.; Pascual, J.I.; Lorente, N.

2017

Article / From tunneling to contact in a magnetic atom: The non-equilibrium Kondo effect

The Journal of Chemical Physics

Deung-Jang Choi, Paula Abufager, Laurent Limot, Nicolás Lorente

Article / Building complex Kondo impurities by manipulating entangled spin chains

Nano letters

Deung-Jang Choi, Roberto Robles, Shichao Yan, Jacob AJ Burgess, Steffen Rolf-Pissarczyk, Jean-Pierre Gauyacq, Nicolás Lorente, Markus Ternes, Sebastian Loth

2016

Article / Spin-polarised edge states in atomic Mn chains supported on Cu2N/Cu (100)

Journal of Physics: Condensed Matter

Deung-Jang Choi, Roberto Robles, Jean-Pierre Gauyacq, Carmen Rubio-Verdú, Nicolás Lorente, José Ignacio Pascual

Article / Structural and magnetic properties of FeMnx chains ( x = 1 – 6 ) supported on Cu2N / Cu (100)

Physical Review B

Deung-Jang Choi, Roberto Robles, Jean-Pierre Gauyacq, Markus Ternes, Sebastian Loth, Nicolás Lorente

Article / Kondo resonance of a Co atom exchange coupled to a ferromagnetic tip

Nano letters

D.-J. Choi, S. Guissart, M. Ormaza, N. Bachellier, O. Bengone, P. Simon, L. Limot

2015

Article / Three-dimensional mapping of single-atom magnetic anisotropy

Nano letters

Shichao Yan, Deung-Jang Choi, Jacob AJ Burgess, Steffen Rolf-Pissarczyk, Sebastian Loth

2014

Article / Control of quantum magnets by atomic exchange bias

Nature nanotechnology

Shichao Yan, Deung-Jang Choi, Jacob AJ Burgess, Steffen Rolf-Pissarczyk, Sebastian Loth

2012

Article / Chiral conformation at a molecular level of a propeller-like open-shell molecule on Au (111)

The Journal of Physical Chemistry Letters

Federico Grillo, Veronica Mugnaini, Malena Oliveros, Steve M Francis, Deung-Jang Choi, Mircea V Rastei, Laurent Limot, Cinzia Cepek, Maddalena Pedio, Stefan T Bromley, Neville V Richardson, Jean-Pierre Bucher, Jaume Veciana

Article / Conductance-driven change of the Kondo effect in a single cobalt atom

Physical review letters

D.-J. Choi, M.V. Rastei, P. Simon, L. Limot

2011

Article / Engineering negative differential conductance with the Cu (111) surface state

Physical review letters

B.W. Heinrich, M.V. Rastei, D.-J. Choi, T. Frederiksen, L. Limot

2010

Article / Interface Engineering in Quasi-Magnetic Tunnel Junctions with an Organic Barrier

Journal of Magnetics

Deung-Jang Choi, Nyun-Jong Lee, Tae-Hee Kim

Article / Direct observation of the tunneling channels of a chemisorbed molecule

The Journal of Physical Chemistry Letters

Benjamin W Heinrich, Cristian Iacovita, Thomas Brumme, Deung-Jang Choi, Laurent Limot, Mircea V Rastei, Werner A Hofer, Jens Kortus, Jean-Pierre Bucher

2009

Article / Nanoparticle assemblies as memristors

Nano letters

Tae Hee Kim, Eun Young Jang, Nyun Jong Lee, Deung Jang Choi, Kyung-Jin Lee, Jung-tak Jang, Jin-sil Choi, Seung Ho Moon, Jinwoo Cheon

2024

Invited talk | Unveiling Magnetic Impurities and Atomic-Level Assembly with Scanning Tunneling Microscopy

Rank Prize Symposium: Ultrafast meets ultrasmall: exploring the uncharted territory of quantum dynamics - Invited talk

Deung-Jang Choi

Invited talk | Probing Diverse Behavior in Atomically Engineered Molecular Devices on Surfaces

International Conference on Superconductivity and Magnetism- ICSM2024 - Invited talk

Deung-Jang Choi

Invited talk | Quantum Control at the Atomic Scale: From Ångstrom-Scale Qubit Platforms to Topological Superconductivity

Quantum Matter International Conference – QUANTUMatter 2024 - Invited talk

Deung-Jang Choi

Invited talk | Manipulating atoms and molecules to explore qubit platforms

Nanotechnology Meets Quantum Information (NanoQI`24) - Invited talk

Deung-Jang Choi

2023

Conference organization | The third Spins on Surfaces (SoS3) workshop

Spins on Surfaces (SoS3) workshop series - Conference organization

Deung-Jang Choi, Andreas Heinrich

Conference organization | Plenty of Room at the Bottom – New Developments in Scanning Probe Tools

801. WE-Heraeus-Seminar - Conference organization

Deung-Jang Choi, Laerte Patera, Philip Willke

Invited talk | Hunting for in-gap states in a superconductor towards topological superconductivity

Quantum Phenomena in 2D Matter (QP2DM) - Invited talk

Deung-Jang Choi

Invited talk | Exploring topological superconductors and emergent quantum states

The Korean Physical Society (KPS) Fall meeting 2023 - Invited talk

Deung-Jang Choi

2021

Invited talk | Creating new bands in a superconductor by crafting different types of spin chains

756. WE-Heraeus-Seminar - Invited talk

Deung-Jang, Choi

Invited talk | Atomic engineering of spin structures on superconductors

Quantum Workshop DIPC - UPV/EHU - Invited talk

Deung-Jang Choi

2020

Invited talk | Molecular junctions between two superconductors: from electron to Cooper pair tunneling

Minisymposium on Electron Paramagnetic Resonance in Scanning Tunneling Microscopy - Invited talk

Deung-Jang, Choi

Invited talk | Atomic spin structures on surfaces

Atomic-scale quantum materials colloquium - Invited talk

Deung-Jang, Choi

2019

Invited talk | Spin correlations of atomic chains on superconductors

The workshop “Probing Coherent Superconducting Hybrids at the Nanoscale“ - Invited talk

Deung-Jang, Choi

Invited talk | The effect of magnetic correlations in superconducting in-gap states

Quantum Design Physics 2019 workshop - Invited talk

Deung-Jang, Choi

Invited talk | Tunneling spectroscopy of supported spin chains

IBS Conference on Surface Atomic Wires - Invited talk

Deung-Jang Choi

Invited talk | Single spin chains on solid surfaces studied by the scanning tunneling microscope

Colloquium - Invited talk

Deung-Jang, Choi

2018

Invited talk | Atomically engineered spin chains on surfaces

2nd ELECMI International Workshop - Invited talk

Deung-Jang, Choi

Oral presentation | Magnetic field dependence of magnetic impurities on superconductors

International conference on nanoscience and technology (ICN+T) - Oral presentation

Deung-Jang, Choi

Oral presentation | Magnetic interactions between Cr adatoms on the Bi2Pd superconductor

DPG spring meeting 2018 - Oral presentation

Deung-Jang, Choi

2017

Invited talk | Spin-spin interactions on superconductors

Operating Quantum States in Atoms and Molecules at Surfaces – QMol workshop - Invited talk

Deung-Jang, Choi

Invited talk | Magnetic interactions on superconducting surfaces

Operating Quantum States in Atoms and Molecules at Surfaces – 654. WE-Heraeus-Seminar: Topical Insights into Nanoscience using Scanning Probes - Invited talk

Deung-Jang, Choi

2016

Invited talk | Atomic engineering of nanostructure in STM

IX GEFES - 2016 Meeting - Invited talk

Deung-Jang, Choi