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As one of the latest instrumentation built at SOLEIL, ANTARES beamline offers a spectroscopic non-destructive nano-probe named k-space nanoscope to study advanced materials using angle resolved photoemission spectroscopy with nano-scale lateral resolution (nanoARPES).

Introduction

This innovative scanning photoemission nanoscopy combines the extreme focalization of the polarized incident light with linear, deflexion and angle sweeps to perform precise electronic band structure with high energy, angular and lateral resolution. The imaging of selected electronic bands with a given binding energy and momentum thorough the investigated samples can be straightforwardly linked with a complete punctual band structure determination in selected areas of the samples, where the electronic heterogeneities are spotted. This exhaustive electronic characterization of the samples can furthermore be in situ combined with a detailed chemical imaging of a wide variety of materials by using high energy resolution photoemission (HRPES) of chemically shifted core level and X-ray absorption (XAS).  Complementary, compatible techniques as resonant photoemission (ResPES) and photoelectron diffraction in energy (PhD) and angular (XPD) scanning modes are also fully implemented at the ANTARES beamline. The highly developed automatic software facilitates an effortless operation to carry out studies using a multi-technique approach.

ANTARES setup (top left) and imaging of exfoliated graphene on SiO2 using an (1) optical microscope (bottom left panel); (2) carbon 1s photoemission peak (bottom central panel) and (3) nanoARPES of the Dirac electronic states at the Fermi level (bottom right panel). In optical imaging, the graphene becomes visible only when it is placed on top of a silicon wafer covered by SiO2 films of a given thickness. However, for the chemical and electronic imaging the photoemission intensity of a chosen core level and a given valence band electronic states are respectively measured sequentially throughout the whole sample.
 
The goal of this website is to present  a complete and comprehensive description of  the ANTARES beamline (BL) at the “Synchrotron SOLEIL”. In particular, the current performance of the ANTARES installations, the home scientific research as well as the scientific collaborations, associated user community and highlights are briefly described.
 

History of the ANTARES beamline

The project to build this Angle Resolved Electron Spectroscopy (ARPES) related BL at SOLEIL has its origin on the successful activities accomplished by the former BL at LURE, named “SU8” dedicated to perform classical ARPES, high resolution core levels (CL) and photoemission and Photoelectron Diffractions (PhD) experiments.  After the cloture of LURE at the end of 2003, a detailed document describing the new LB was produced in June 2007, whose evaluation and aprovation by the SOLEIL directors, ensured the green light for the construction of the new BL installation, at the brand new SOLEIL Campus.  Due to the technical complexity associated to the microscopic aspects of the new BL, its construction was recommended among the Phase II beamline SOLEIL portfolio.

The new BL ANTARES was designed, built and commissioned at SOLEIL from 2007 until December 2009. The acronym ANTARES stands for «Analysis Nano-spoT  Angle Resolved photoEmission Spectroscopy». The complete design of this BL was fully accomplished by SOLEIL teams and no external company was contracted to help in the conception, drafts and outlines required for its construction. The firsts expert users were welcomed at the BL during the last two months of 2009. Finally, the BL was declared fully operational and open to the General Users in January 2010. Even if the first years of operation considerable optimization have to be done due to the inherent early development of this new k-space nanoscope, the ANTARES BL has become the "First nanoARPES User Facility" open to the scientific and industrial community.

Team

AVILA
AVILA Jose
Responsable Ligne De Lumière par Interim
DUDIN
LORCY
LORCY Stephane
Assistant Ingénieur de Ligne De Lumière
PASQUET
PASQUET Cesaire
YI
YI Hemian
Post-Doctorant
ZHANG
ZHANG Zailan
De Dios Sinovas Susana
Student
Popescu Traian
Student
Cotinot Jeremi
Student
Frantzeskakis Emmanouil
Post-Doc
Brousse Kevin
Student
Alizon Guillaume
Student
Levy Anna
Post-Doc
Cho Suyeon
Post-Doc
Chen Chaoyu
Post-Doc
Izzo Atmane
Student
Barelli Pantani Jérèmy
Student
Tham JiaYing
Graduated
Chavanne Sylvain
Student
Chakraborty Anirban
Post-Doc
Dassy Arthur
Student
Razado Colambo Ivy
Post-Doc

Employment

Click here to access to the SOLEIL employment web page

Technical data

Energy range

12-1000 eV (without Zone Plates) 
95-1000 eV (with Zone Plates)

Energy Resolution (∆E/E)

>20000 (10-150 eV) 
>10000 (150-1000 eV)

Source

 

- HU256 (256 mm period) electromagnetic 
- HU60 (60 mm period) permanent magnet – type AppleII 
- Variable polarization light: lineal H and V, circular

Flux at the first optical element

1.2•10+15 Photons/s/0.1% BP @ 100 eV

Optics

- PGM without entrance slits, using plane gratings with varied line spacing 
(VLS) and variable groove depth (VGP) 
2 gratings (600 tr/mm and 1300 tr/mm) 
- Double Pseudo-Wolter (Focus on Sample and Using Zone Plates) 
- 2 Fresnel Zone Plates 

Sample Environment

- 5 axis High precision sample manipulator (better than 1 micron resolution)
- Scan sample Manipulator (x,y,z) (resolution better than 5 nm) 
- The sample can be cooled down thanks to a liquid He cryostat.

Flux on sample

-Without Zone Plate:~ 5•10+12 Photons/s/0.1% BP (@ 100 eV) (E/ΔE = 10000) 
-Using ZP : 5•10+10 -10+11 Photons/s/0.1% BP

Detectors

- High energy and angle resolution kinetic energy electron analyzer 
(Scienta R4000) 
- Low Energy Fluorescence Detector 

Scientific opportunities

to be filled

Available techniques

- Scanning electron photoemission microcopy (SPEM) for core levels

- Nano-ARPES

- Angle Resolved Photoemission Spectroscopy at submicrometer scale

- Fermi Surface Mapping

- Scanned Energy and Angular Photoelectron Diffraction (PED)

- Resonant photoemission

- X-ray absorption spectroscopy

Industry