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Title: Characterization of just one atom using synchrotron X-rays

Journal Article · · Nature (London)
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5];  [2];  [2];  [2];  [6]; ORCiD logo [1]; ORCiD logo [5];  [2]; ORCiD logo [2];  [7];  [5]; ORCiD logo [5]; ORCiD logo [4]; ORCiD logo [8];  [3]; ORCiD logo [1]
  1. Argonne National Laboratory (ANL), Argonne, IL (United States); Ohio Univ., Athens, OH (United States)
  2. Argonne National Laboratory (ANL), Argonne, IL (United States)
  3. Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Illinois, Chicago, IL (United States)
  4. Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  5. Ohio Univ., Athens, OH (United States)
  6. Univ. of South Florida, Tampa, FL (United States)
  7. University of Strasbourg (France)
  8. Shenzhen Univ. (China)

Since the discovery of X-rays by Roentgen in 1895, its use has been ubiquitous, from medical and environmental applications to materials sciences. X-ray characterization requires a large number of atoms and reducing the material quantity is a long-standing goal. Here we show that X-rays can be used to characterize the elemental and chemical state of just one atom. Using a specialized tip as a detector, X-ray-excited currents generated from an iron and a terbium atom coordinated to organic ligands are detected. The fingerprints of a single atom, the L2,3 and M4,5 absorption edge signals for iron and terbium, respectively, are clearly observed in the X-ray absorption spectra. The chemical states of these atoms are characterized by means of near-edge X-ray absorption signals, in which X-ray-excited resonance tunnelling (X-ERT) is dominant for the iron atom. The X-ray signal can be sensed only when the tip is located directly above the atom in extreme proximity, which confirms atomically localized detection in the tunnelling regime. Finally, our work connects synchrotron X-rays with a quantum tunnelling process and opens future X-rays experiments for simultaneous characterizations of elemental and chemical properties of materials at the ultimate single-atom limit.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM); Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2001465
Journal Information:
Nature (London), Vol. 618, Issue 7963; ISSN 0028-0836
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (47)

Synchrotron-based techniques for plant and soil science: opportunities, challenges and future perspectives journal January 2009
Intra- and intermolecular self-assembly of a 20-nm-wide supramolecular hexagonal grid journal April 2020
Generalized Gradient Approximation Made Simple journal October 1996
Controlled modulation of hard and soft X-ray induced tunneling currents utilizing coaxial metal-insulator-metal probe tips journal January 2017
Density‐functional thermochemistry. III. The role of exact exchange journal April 1993
Reaching the magnetic anisotropy limit of a 3d metal atom journal May 2014
Synchrotron X-Ray Scanning Tunneling Microscopy: Fingerprinting Near to Far Field Transitions on Cu(111) Induced by Synchrotron Radiation journal March 2013
Inducing All Steps of a Chemical Reaction with the Scanning Tunneling Microscope Tip: Towards Single Molecule Engineering journal September 2000
X-ray absorption spectroscopy journal August 2009
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Aluminium in Alzheimer?s disease: are we still at a crossroad? journal January 2005
Elemental Fingerprinting of Materials with Sensitivity at the Atomic Limit journal October 2014
Electronic read-out of a single nuclear spin using a molecular spin transistor journal August 2012
Stabilization of point-defect spin qubits by quantum wells journal December 2019
Integrative, dynamic structural biology at atomic resolution—it's about time journal March 2015
Detecting element specific electrons from a single cobalt nanocluster with synchrotron x-ray scanning tunneling microscopy journal September 2017
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Controlling the Charge State of Individual Gold Adatoms journal July 2004
Ab initio molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium journal May 1994
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Review of third and next generation synchrotron light sources journal April 2005
High-spatial-resolution mapping of catalytic reactions on single particles journal January 2017
Synchrotron radiation: A continuing revolution in X-ray science—Diffraction limited storage rings and beyond journal April 2015
Development of a scanning tunneling microscope for in situ experiments with a synchrotron radiation hard-X-ray microbeam journal February 2006
First-principles calculations of the electronic structure and spectra of strongly correlated systems: the LDA + U method journal January 1997
Influence of ligands on the electronic and magnetic properties of Fe porphyrin in gas phase and on Cu(001) journal April 2015
3d x-ray-absorption lines and the 3 d 9 4 f n + 1 multiplets of the lanthanides journal October 1985
The performance of the Becke—Lee—Yang—Parr (B—LYP) density functional theory with various basis sets journal September 1992
X-ray magnetic circular dichroism and near-edge X-ray absorption fine structure of buried interfacial magnetism measured by using a scanning tunneling microscope tip journal August 2018
Soft X-ray microscopy at a spatial resolution better than 15 nm journal June 2005
Ab initiomolecular dynamics for liquid metals journal January 1993
X-ray nanospectroscopy for attogram-scale two-dimensional nanomaterials using photoelectron emission microscopy conference January 2010
On-surface coordination chemistry of planar molecular spin systems: novel magnetochemical effects induced by axial ligands journal January 2012
Fully optimized contracted Gaussian basis sets for atoms Li to Kr journal August 1992
Electron states, magnetism, and the Verwey transition in magnetite journal December 1991
Nanoassembly of a Fractal Polymer: A Molecular "Sierpinski Hexagonal Gasket" journal June 2006
XTIP – the world's first beamline dedicated to the synchrotron X-ray scanning tunneling microscopy technique journal April 2020
Determination of the relative concentrations of rare earth ions by x-ray absorption spectroscopy: Application to terbium mixed oxides journal January 1986
Anomalous Kondo resonance mediated by semiconducting graphene nanoribbons in a molecular heterostructure journal October 2017
First Principles Calculation of Fe L2,3-edge X-ray Absorption Near Edge Structures of Iron Oxides journal January 2004
Stereospecific Autocatalytic Surface Explosion Chemistry of Polycyclic Aromatic Hydrocarbons journal May 2018
STM/AFM investigations of β-MoTe2, α-MoTe2 and WTe2 journal May 1996
Synchrotron radiation-induced total reflection X-ray fluorescence analysis journal June 2010
X-Ray Detected Magnetic Hysteresis of Thermally Evaporated Terbium Double-Decker Oriented Films journal October 2010
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
The integral role of iron in ocean biogeochemistry journal March 2017
Nanoscale Chemical Imaging by Scanning Tunneling Microscopy Assisted by Synchrotron Radiation journal March 2009