ultra high vacuum surface science
from concept to characterizations
The EQUAL lab enables fundamental and applied research using state-of-the-art connected instruments
DFT
Predictions of new materials and phenomena through ab-initio density functional theory
PVD
thin film growth of topological insulators, magnetic materials, and various oxides using DC and RF magnetron sputtering
MBE
atomically-thin layers epitaxial synthesis of selenides and tellurides in separate and dedicated molecular beam epitaxy systems
NanoESCA
micro-ARPES, PEEM, XPS, & UPS: spin resolved, spatially resolved, variable temperature (15K-400K)
Other tools
Scanning diamond-NV micro-tesla magnetometry, Scanning Raman and PL (4-laser, 10K-300K)
SELENIDE MBE SYSTEM: 2D atomic layers and thin films of:
-
selenides of Bi, Mo, W, Nb, V, & Fe
-
binary and ternary compounds of above
-
alloys & heterostructures of above
-
UHV-connected to the telluride MBE, NanoESCA systems
TELLURIDE MBE SYSTEM: 2D atomic layers and thin films of:
-
tellurides of Bi, Sb, Mn, & Ni
-
binary and ternary compounds of above
-
alloys & heterostructures of above
-
UHV-connected to the selenide MBE, PVD, and NanoESCA systems
PVD THIN FILM SYSTEM:
-
DC and RF magnetron sputtering
-
oxides, nitrides, selenides, tellurides
-
superconducting, magnetic, and topological materials
-
UHV-connected to the selenide MBE, telluride MBE, and NanoESCA systems
spin-resolved, cryogenic Photoemission electron microscopy (PEEM):
-
Hg vapor light source for near-Fermi level probing
-
Imaging with 40nm spatial and 25 meV spectral resolution
-
Real and reciprocal space imaging
-
spin-resolved and T-dependent (15K-400K)
spin-resolved, cryogenic X-ray photoelectron spectroscopy (XPS):
-
Aluminum Kα X-ray source at 1486.7 eV
-
Chemical identification, oxidation state, bonding
-
Imaging with ~mciron-scale spatial and 25 meV spectral resolution
-
spin-resolved and T-dependent (15K-400K)
spin-resolved, cryogenic momentum microscopy:
-
He I and II light sources for near-Fermi level probing
-
spin-resolved ARPES and micro-ARPES
-
Band structure, spin-texture, and more
-
spin-resolved and T-dependent (15K-400K)
Qnami ProteusQ Scanning diamond NV magnetometer
-
microtestal imaging of magnetic materials
-
40nm spatial resolution
Renishaw Raman and Photolumunescence Spectroscopic Mapping:
-
457 nm, 488 nm, 514 nm and 633 nm excitation lines
-
Stokes and anti-Stokes line from <15 cm-1 at 514 nm
-
11K-300K capability
-
Si and InGaAs detectors to cover 0.7 – 2.7 eV spectra
In-house cryogen supply
-
250L liquid He4 plant
-
9000 gallons liquid N2 tank