Materials and Spectroscopies for Nanoelectronics and Spintronics MSNS Laboratory

Our research is mainly devoted to the experimental investigation of semiconductors, oxides, and their interfaces, silicon and germanium nanostructures, MoS2 growth, and magnetic thin films for advanced and innovative nanoelectronic, spintronic, and neuroelectronic devices. The research activity is carried out in strong collaboration with the CNR-IMM-MDM and leading semiconductor industries, Micron and ST.

Point defects in semiconductors and oxides and at their interfaces

Study of the electronic properties of point defects in semiconductors (Si, Ge) and in high dielectric constant materials (transition metal oxides) and at their interfaces.

Si Nanowires

The electronic and spintronic properties of Silicon nanowires produced by metal-assisted chemical etching (MACE) (collaboration with M. Belli, CNR-IMM) are investigated using mainly spin dependent transport techniques aiming at the characterization of shallow donors.

Quantum dots

The study of QD-based devices (colloidal nanoparticles of PbS, CdSe, CdS, Au) is carried out using charge and spin transport aiming at the understanding of strongly correlated few electrons/excitons systems and their possible applications, such as reservoir computing and quantum computing.

 

TDMC (MoS2, WS2) and magnetic thin films
Optical image of MoS2. In the inset Raman spectra

TMDC are grown with a novel patented method and their properties characterized with Raman spectroscopy (Collaboration with E. Bonera) and electrical measurements. Magnetic thin films deposited at CNR-MDM for spintronics are characterized with broad band FMR.  (Collaboration with R. Mantovan and M. Belli, CNR-IMM).

Microelectrodes for neurolectronics

Within the Neureka EU project (www.neureka.gr) deposition by ALD and characterization by impedance spectroscopy and noise of novel materials and structures for neuron stimulation and recording.

Research Group

Research Lab

MSNS1 Lab – U5 Building, 1st Floor, Room 1043
MSNS2 Lab – U5 Building, 1st Floor, Room 1095

Facilities
CW X-band EPR/EDMR systems at MSNS Lab

Growth and processing

  • Atomic Layer Deposition (ALD) mini-chamber with O3 line for in-situ characterization.
  • Horizontal and vertical furnaces for annealing and diffusion
  • Q-switched Ruby laser for laser annealing

 
Characterization

  • Two CW X-band systems for electron spin resonance (ESR) spectroscopy, electrically detected spin resonance spectroscopy (EDMR) and electron nuclear double resonance spectroscopy (ENDOR). Variable temperature measurements (4-600 K).
  • Multi-frequency (0.1-40 GHz) EDMR
  • Set-up for inelastic electron tunnelling spectroscopy (IETS) working in the temperature range 4-300 K
  • Electrical: I-V, C-V, DLTS (20K-300K), Probe station