BACH
The BACH beamline belongs to the Istituto Officina dei Materiali (IOM) of the Consiglio Nazionale delle Ricerche (CNR) and it is operated by a CNR team in collaboration with Elettra-Sincrotrone Trieste S.C.p.A. |
Research highlights | PublicationsStability of van der Waals Pt-Telluride thin filmsPhotoemission provides insight into the synthesis conditions of Pt3Te4, and Pt2Te2 by thermal treatment starting from PtTe2 thin films. Impact of thermal gas treatment of Li-rich Mn-based cathode materials for Li-ion batteriesInsights on the mechanism responsible for improved stability of high-energy-density lithium rich layered structure Mn based cathodes upon double gas treatment has been obtained by quasi in situ advanced spectroscopic techniques The NESSIAS effect at Si nanostructuresSi nanowells embedded in SiO2- and Si3N4 show an electronic structure shift with respect to the vacuum level. This NESSIAS effect gives origin to intrinsic Si type II homojunctions which should remain fully functional down to extremely low temperatures, useful for peripheral electronics in qbit manipulation. Lithium induces the reorientation of few-layer MoS2 filmsMeasurements at the BACH beamline attest to the presence of lithium in interstitial sites in Li-MoS2 films prepared by a new approach. Atomically-Precise Texturing of Hexagonal Boron Nitride Nanostripes
h-BN grown on a curved Rh crystal forms a continuous atomically-thin carpet revealing a transformation from 2D to 1D electronic band structure. This novel approach to nanopattering through epitaxial growth has practical technological implications.
Boron nitride-graphene in-plane hexagonal heterostructure in oxygen environmentInsights into the progressive and subsequent intercalation of oxygen, selective etching of graphene and oxidation of boron in a quasi-free standing Gr-h-BN monolayer during oxygen exposure. Improving the Efficiency of Gallium Telluride through Defects Engineering and Interfacing with its Native OxideThe formation of a nanoscale sub-stoichiometric wide-band-gap Ga2O3 skin over narrow-band-gap gallium telluride upon air exposure is beneficial for electrocatalysis, photocatalysis, and gas sensing. Soft x-rays spectroscopies in liquids at BACHWe have developed suitable cells to perform soft x-ray spectroscopy in the presence of liquids and reagent gases at ambient pressure: two types of static cells working in transmission or in fluorescence modes, and an electrochemical flow cell which allows to carry out cyclic voltammetry in situ, electrochemical deposition on a working electrode and to study chemical reactions in-operando conditions. Rev. Sci. Instrum. 92, 015115 (2021) https://doi.org/10.1063/5.0025326 Read MoreEasy Hydrogenation and dehydrogenation of a hybrid graphene and hexagonal boron nitride monolayerInsights into the mechanism of hydrogenation and dehydrogenation of a quasi-free standing Gr-h-BN monolayer are achieved by temperature-programmed photoemission. Altering properties of transition metal dichalcogenides by bi-intercalationAdvanced synchrotron radiation spectroscopy helped to gain insight into the origins of phase transitions in Cu and Ni doped TiSe2 dichalcogenide.
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MultiSpectroscopy endstation
In the UHV (low 10-10 mbar) endstation of the BRANCH A it is possible to perform a multi-spectroscopy investigation with photoemission UPS/XPS (including polarization and photon energy-dependent ultra-violet (UV) and soft-x SX-ARPES, RESPES and energy-dependent Photoelectron DIffraction PhD, temperature-progarmmed photoemission TP-XPS), x-ray absorption XAS (TEY,PEY,TFY,PFY) including GAP SCAN acquisitions, x-ray emission XES and x-ray magnetic circular dichroism XMCD (in remanence in the branch A). A LEED and several electron beam evaporators are available to deposit selected metals on the sample surface at different temperatures. A sample-preparation UHV chamber, directly connected to the EndstationA can be used to grow thin films of metals or metal oxides and deposit organic/inorganic molecules on solid surfaces for in-situ investigations. High-partial pressure gas exposures (up to 100 torr) and sample annealing are also possible in a dedicated chamber. Connection of vacuum suitcases is also feasible. Samples in static liquid environment can also be measured in fluorescence yield. |
VG-Scienta R3000 analyser (RESPES, TP-XPS, Dichroic ARPES, EUV ARPES, SX-ARPES, RES-ARPES, fast XPS and UPS, PhD, PY-XAS)
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Pump-Probe Time resolved XASThe experimental setup of the BRANCH A can also combine Laser and Synchrotron Radiation (SR) in order to study the dynamics of the photo-induced excited states of electronic and magnetic systems with optical pump- x ray probe time-resolved XAS. Elettra Synchrotron radiation source provides radiation pulse widths sufficiently short to investigate dynamic processes in the time between 70 ps up to 0.5 μs. Typically, optical excitation of the sample is done by laser pulses (synchronized to either hybrid or multi bunch SR pulses), and probing is performed by time-delayed synchrotron radiation pulses.
“Gap/Phase Energy scan” acquisition mode (synchronization of the undulator gap and phase with the monochromator) has been implemented to XAS, XMCD, RESPES, ARPES and PhD. This has been possible thanks to the collaboration with undulator group (D. Millo, ST), Undulator server group (L. Pivetta, L. Scafuri, ST), A. Barla (ISM-CNR), L. Stebel (ST) |
ComIXS fluorescence spectrometerThe fluorescence spectrometer ComIXS (Compact Inelastic X-ray Spectrometer) installed at the BRANCH A is devoted to the energy analysis of the photons emitted from the sample in the experimental chamber (under synchrotron radiation) for RIXS (resonant x-ray emission spectroscopy) and XES (x-ray emission spectroscopy). It takes advantage of two variable line spacing spherical gratings to cover the range from 20 (35) eV to 1200 eV with high efficiency, but limited resolution (resolving power around 800-1000). The data acquisition is made by a back-illuminated peltier-cooled CCD camera optimized on the soft x-ray energy range. Please contact us if you are interested (the instrument is not currently available to users).Branchline C
A third BRANCH C is also available for the installation of user endstations for long term projects. |
Branchline B---Cells for measurements in liquid environment
>>IMPORTANT NOTE: DUE TO THE LACK OF FUNDS FOR PURCHASING LHe THE XMCD ENDSTATION IS NOT AVAILABLE. No XMCD under applied magnetic field is feasible. |
User Area
Proposal Submission
Before submitting a proposal for the BACH beamline we invite user to read the Info for Users and this page to have an updated information on the endstations and instrumentation. In any case we invite users and collaborators to discuss their proposals with the beamline local contacts well in advance before the submission deadline. This is crucial for a careful assessment of the experiment feasibility and may lead to improvements in the proposed experimental plan. We invite users interested in installing a bulky piece of equipment (such as an entire experimental station) which takes a long time to assemble and dismount to discuss their project with the beamline local contacts well in advance before the submission deadline.
Next call:VUO-Elettraproposal through Elettra VUO, see https://www.elettra.eu/userarea/apbt.html NFFA-Europe NEP call for proposals opensee https://www.nffa.eu/ (proposal through NFFA) AHEAD call for proposals openPlease find here more information on the proposal submission: http://ahead.astropa.inaf.it/index.php/how-submit-a-proposal/ Safety First! Any person working (staff, user or collaborator) at the BACH beamline must read and accept the safety rules described here before accessing the beamline and endstations and follow the safety rules during the beamtime.
Please also read the Documents here:
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