PWS-Salient Characteristics.doc

Salient Characteristics

Commercial Availability Certification: I have evaluated the commercial marketplace and determined that all of the salient characteristics documented below are available in products/services offered in the commercial marketplace.

The Government requires one (1) each Angle-Resolved Photoemission Spectroscopy (ARPES) Tool, one (1) each Scanning Tunneling Microscopy (STM) Cluster Tool and one (1) each Hand-Off Chamber that are all interconnected by ultra-high-vacuum transfer mechanism and meet the following minimum specifications:

CLIN 0001 - Angle-Resolved Photoemission Spectroscopy (ARPES) Tool:

· Allow energy-momentum band mapping without sample rotation, tilt or motion during collection; with energy resolution of less than 1.8 milli-electron-volts (meV) and all control electronics, pumps to achieve <5 x 10-10 Torr and all software necessary for operation.

· Capable of x-ray photoelectron spectroscopy (XPS) using a monochromatic aluminum K-alpha radiation x-ray source.

· An electron flood gun to control sample charging during measurement to be included and located in a suitable location. Location such that electrostatic charging can be mitigated in real-time during measurement.

· The temperature of the ARPES sample stage shall be cooled by a cryogen-free closed-cycle helium (He) compressor-based refrigerator that can achieve a temperature of < Eight (8) Kelvin degrees and maintain that with a stability range of < 0.5 Kelvin degrees.

· Includes a Helium I and II ultra-violet (UV) differentially pumped light source and monochrometer, all control electronics, pumps and software necessary for operation. The source shall produce photon energy/linewidths of 21.2 electron-volts (eV) / < 1.2 x 10-3 eV and 41.8 eV / < 2 x 10-3 eV. Differential pumping to maintain vacuum of < 10-9 Torr during operation

· The sample manipulator of the ARPES tool shall allow computer control of at least five (5) degrees of freedom for sample manipulation and positioning.

· Allow a capability for resolving one (1) out-of-plane spin component, as well as at least one (1), preferably two (2), in-plane spin components.

CLIN 0002 - Scanning Tunneling Microscopy (STM) Cluster Tool:

· Capable of atomic-scale scanning tunneling microscopy (STM), atomic force microscopy (AFM) and scanning tunneling spectroscopy (STS) operational modes with cooling to < 125 Kelvin and base pressure of < 5 x 10-10 Torr with all control electronics, pumps and software necessary for operation.

· A low-energy-electron diffraction (LEED) for characterizing surface structure shall be included and located either in the hand-off/preparation chamber or the STM too with all control electronics, pumps and software necessary for operation.

CLIN 0003 - Hand-Off Chamber:

· Provides a wobblestick mechanism to exchange samples between a standard three (3) inch Varian/VEECO style molybdenum sample holder and a one (1) square centimeter flag-style holder.

· Provides Ultra-high Vacuum (UHV) connections, and gate valves isolating the connections, and mechanisms to move samples between the ARPES tool and the STM tool, and a Varian/VEECO style transfer tube that connects to a molecular beam epitaxy tool.

· Host an atomic hydrogen source to prepare oxide-free surfaces on samples, and shall include an ion source for sputter-cleaning surfaces, an electron beam source for simple evaporations, a low-energy-electron diffraction (LEED) for characterizing surface structure and all control electronics, pumps and software necessary for operation.

· Pumping techniques to achieve a base pressure of < 5 x 10-10 Torr, and a separate differential pumping capability for higher-pressure, dynamically pumped gas flows during sample cleaning.

· A separate vacuum suitcase, and port located at a suitable location on the cluster tool must be included for transfer of samples in and out of the cluster tool.

CLIN 0004: To include Shipping FOB Destination

Signature (typed name): __[REDACTED]__ Technical Point of Contact (TPOC) or Contracting Officer’s Representative (COR)

Contracting Officer:

Template last updated 07/28/2016