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PHOIBOS 150 with 2D-CMOS and 3D(2D) Spin VLEED Detector

Hemispherical Energy Analyzer with 2D CMOS Detector for XPS, ARPES, ISS and LEISS and VLEED Detector for Spin Measurements with 150 mm Mean Radius

The PHOIBOS 150 hemispherical energy analyzer is the-state-of-the-art analysis solution for photoelectron spectroscopy. This analyzer can be operated in all relevant analysis modes, such as ARPES, XPS, UPS, as well as AES, ISS and LEISS. Its design and the modular supplementary hardware makes this analyzer the most versatile PES analyzer in the market.

The patented design of the detector section allows measurements of all three spin components and subsequent 2D ARPES merasurements. The 2D detector is a full scale 2D CMOS detector un undiminished performance in standard PES. The spin channel consist of a 90° deflector to acess the ut of plan spin component and a special rotator lens to swich between the two in plance components of the spin. 

The actual spin detector is the FOCUS Ferrum detector, where an freshly prepared iron oxide film is the spin selective scattering target. With the VLEED detector each spin channel is measured separately with a high efficiency after switching integarted magentic coils for spin selecton. The preparation of the scatering target is fully automated.

The energy analyzer sectionis equipped with 8 customizable entrance and 3 exit slits. For highest energy resolution the entrance slit can be chosen down to 50 µm, providing achievable energy resolution better than 1.8 meV. The analyzer comes with a highly stable power supply, the HSA 3500 plus, for best performance in a wide kinetic energy range.

A classical CCD camera detection system is available on request.

KEY FEATURES

  • Highly Sensitive Spin Detector
  • Exchange Scattering Scheme
  • Full Scale 2D Detector
  • Spin Rotator and 90° Deflector
  • High Energy and Angular Resolution
  • 150 mm Mean Radius
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MADE FOR THESE METHODS

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SPECIFICATIONS

PHOIBOS 150 with 2D-CMOS and 3D(2D) Spin VLEED Detector
Performance
Energy Resolution

< 1.8 meV in UPS
< 10  meV in Spin Channel

Angular Resolution

< 0.1° in ARPES Mode
< 0.15° in Spin Mode

k-Resolution

N/A

Acceptance Angle

±15°, ±7°, ±4° and ±3° in ARPES Mode

Lateral Resolution

< 35 µm

Smallest Acceptance Spot

100 µm

XPS Count Rates UHV

> 0.5 Mcps @ 0.85 eV and > 1.5 Mcps @ 1.00 eV FWHM

Detector Channels

1900 x 1200 (with Channel Binning)

Sherman Function /FoM

Sherman Function: 0.28
FoM=0,009

Operation
Kinetic Energy Range

0-3500 eV in PES
0-1500 eV in SpinPES

Pass Energies

0-550 eV Continously Adjustable
0-200 eV in Spin Detector Channel

Energy Dispersion

Hemisphere

Lens Modes

Transmission Mode, Angular Resolved Mode, Magnification (Lateral Resolved) Mode

Measurement Modes

Snapshot Mode, Sweeping Mode, Fixed Energy Mode

Detector

2D CMOS Detector
3D Spin VLEED Detector

Slits/Apertures

8 entrance and 3 exit slits and iris aperture

Energy Window

13% of Pass Energy

Electronics

HSA 3500 +

Working Pressure

10-11 to 10-7 mbar

Mounting
Working Distance

40 mm

Mounting Flange

DN100CF (6" OD)

Magnetic Shielding

Double µ-Metal Shielding

Electric Isolation

> 10 keV

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PUBLICATIONS

  1. (2018) Spin- and Angle-Resolved Photoemission Study of the Alq3/Co Interface

    Controlling the interaction between organic semiconductors and ferromagnetic surfaces is one of the key issues for designing metal–organic hybrid interfaces for spintronic applications. The strong chemical interaction across such hybrid interfaces results in the formation of new spin-polarized hybrid interface states which determine all device-relevant properties. Here, we revisit the hybrid interface formed between the prototypical molecule Alq3 and the Co surface using spin- and angle-resolved photoemission. We reveal a significant change of the spectroscopic lineshape of the cobalt 3d bands by the adsorption of Alq3. The hole-like minority and the electron-like majority bands of the bare Co surface are replaced by an energetically very broad band with neglectable band dispersion along the Γ̅–X̅ direction. Moreover, the magnitude and shape of the spin polarization of the Alq3/Co valence band structure are also significantly modified by the adsorption of Alq3 and become completely independent of the momentum space positions along the Γ̅–X̅ direction. Our findings are attributed to an elastic scattering of the Co photoelectrons at the disordered Alq3 overlayer, leading to a redistribution of the spin-dependent spectral intensity in momentum space. A careful analysis of our data shows that such elastic scattering takes place without significant spin-flip scattering processes and that the spectral feature of the highest occupied molecular orbital of Alq3 is fully unpolarized.



    J. Stöckl, A. Jurenkow, N. Großmann, M. Cinchetti, B. Stadtmüller, M. Aeschlimann
    J. Phys. Chem. C 122 (12), pp. 6585–6592
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SPARE PARTS

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Product image
Product description
Article No.
 
Channelplates Set - 1 pair MCP 40

Spare channelplate set for all 40 mm CCD detectors

2060009045
Phosphor screen

Spare phosphor screen for all 40 mm CCD detectors. Exchange with channelplates is recommended.

2060008804
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