1. Perovskite oxides and related materials: recent problems and perspectives
Tribute to the career of Prof. Dr. Siegmar Kapphan
International workshop
Pavia, October 13th-14th
Dip. Fisica “A. Volta”
Aula dottorato
2nd floor

2. http://ppp.unipv.it In 1799 Alessandro Volta invented the battery.
He was then 54 years old and one of Europe’s most famous physicists.
Since 1778 he had been Regius Professor of Experimental Physics at the Pavia University and been running the Physics Laboratory, which has been recently reconstructed.
Not only is our Department named after him... but also the unit of measure of potential, which Volta called "tension", is named the "volt".

3. 20 post graduate, PhD and fellowship students
Dipartimento di Fisica “A. Volta” Head of Dept (2003-): Prof. C.B. AZZONI
12 full professors
14 associate professors
7 researchers
18 technicians
20 post graduate, PhD and fellowship students
Budget ~ 1.3 M€

4. 1.3 M€ 0.6 M€ Sources of budget National Grants EU-Int Grants UNIPV
Private Companies
INFM

5. Staff: M. Bornatici, O. Maj, N. Bertelli
PHYSICS EDUCATION and PHYSICS HISTORY Group
Staff: G. Bonera, F. Bevilacqua, L. Borghi, A. De Ambrosis, L. Falomo, L. Mascheretti, M.C. Garbarino, L. Cardinali
*Identification of tools and strategies to support the Physics teaching/learning process
*Historical comprehension of the developments of different physical branches
QUANTUM INFORMATION THEORY Group
Staff: GM D’Ariano, C. Macchiavello, L. Maccone, M. Sacchi, P. Lo Presti, F. Buscemi, G. Chiribella, P. Perinotti
Quantum Measuring Devices for Photonics and Quantum Information
Entanglement Assisted High Precision Measurements
Quantum Teleportation and Quantum Cloning by the optical parametric squeezing process
Quantum Properties of Distributed Systems
THEORETICAL RESEARCH IN PLASMA PHYSICS
Staff: M. Bornatici, O. Maj, N. Bertelli
- propagation and absorption of electromagnetic waves in fusion plasmas.
- wave propagation in inhomogeneous media: extension of the geometrical optics approximation.

6. PHOTONICS MATERIALS AND NANOSTRUCTURES
Staff: A. Stella, G. Guizzetti, F. Marabelli, L.C. Andreani, M. Patrini, M. Galli, M. Belotti, A. Balestreri, D. Gerace, M. Liscidini
Photonic crystals and waveguides
Metallic and semiconducting
nanoparticles in dielectric matrices
SiGe Q-dots for integrated optics Si-compatible
Q-dots InAs/InGaAs for 1.3 – 1.55 micron
III-V structures for photovoltaic applications
Electronic and photonic nanostructures: theory

7. Optical Techniques Linear: Nonlinear :
angle-resolved reflectance & transmittance
spectroscopic ellipsometry
modulation spectroscopies (photo-, electro- and thermo-reflectance).
Nonlinear :
Raman scattering
luminescence and
second-harmonic generation
time-resolved spectroscopy

8. MAGNETISM AND SUPERCONDUCTIVITY
Staff: A. Rigamonti, F. Borsa, P. Carretta, M. Corti, A. Lascialfari,
p.i. S. Aldrovandi
Post-doc : J. Lago
PhD students : E. Micotti, N. Papinutto, M. Filibian, M. Mariani
Techniques :
Nuclear Magnetic Resonance (NMR, mainly in Solids)
Muon Spin Rotation (MUSR)
Susceptibility and magnetization (SQUID)
Specific heat
Magnetic Resonance Imaging (collaborations)

9. Motions and structure of flux lines lattice in superconductors
Diamagnetic fluctuations above TC in BCS superconductors (MgB2)
Quantum tunneling of the magnetization (QTM)
Molecular nanomagnets
Low-dimensional
quantum antiferromagnets (S=1/2)

10. OXIDES… Para/ferroelectrics High-k materials for sensors applications
G. Samoggia; P. Galinetto; E. Giulotto; F. Rossella
RAMAN SPECTROSCOPY, PHOTO and THERMO LUMINESCENCE, PHOTO and THERMO CONDUCTIVITY
C.B. Azzoni; M.C. Mozzati; D. Maghini
EPR & MAGNETIZATION
E.R. Mognaschi
DIELECTRIC SPECTROSCOPY

11. PEROVSKITE OXIDES Main Activities
Phase transitions in mixed oxides based on ABO3 (KTO, STO, BTO, etc) compounds
Structural, electronic and optical properties of intrinsic and impurities defects in ABO3
Study of the transport phenomena and charge localization due to optical irradiation in ABO3 compounds

12. PHOTO-INDUCED EFFECTS ON PT IN KTO, STO
Study of self-ordering and of new phase transitions in soft matrices containing interacting degrees of freedom of impurities and Jahn-Teller polarons
Doped KTO, KLT, KLTN
PHOTO-INDUCED EFFECTS ON PT IN KTO, STO
Nano-materials: effect of nanometric scaling on the occurrence and the nature of phase transition in BTO, KTO and STO
Photo-polarons in quantum paraelectric perovskite oxides: optical, charge transport, giant dielectric effects, structural transformations and other manifestations

13. Market Applications of Switchable Materials, through 2006 ($ Millions)
MARKET FOR SWITCHABLE MATERIALS
BUSINESS COMMUNICATIONS COMPANY, INC., 25 Van Zant Street, Norwalk, CT 06855,  
Switchable materials are broken down into 3 classes of materials, ferroelectrics (FRAM), electrochromics, and materials used for optical switching(liquid crystals, polymers, and integrated chips)

14. Experimental facilities
Raman and micro-Raman spectroscopy
Optical absorption, PL, TL, PC, TSC
Electron Paramagnetic Resonance
Hall, Photo-Hall and magneto-optical spectroscopy
Static magnetization measurements
Dielectric characterization
Ellipsometry
Electro-optical characterization *
Femto-second laser sources *

15. Laboratory of Nonlinear Optics and Ultrafast Spectroscopy Electronics Department - University of Pavia V. Degiorgio, I. Cristiani, D. Grando, P. Minzioni…
Spectra Physics system composed by a pump laser Millennia, Ti:sapphire oscillators Tsunami emitting 70/130 fs and 1-15 ps nm,
fs Optical Parametric Oscillator tunable from 1400 to 1800 nm
Regenerative amplifier and OPA
SHG & THG,
Hyper Rayleigh scatteing
Pump & probe techs

16. Thursday, October 13th
9:30 – 10:00 Workshop Opening – G. Samoggia/P. Galinetto
10:00 – 10:15 Brief survey on the career of Prof. S. Kapphan – V.A. Trepakov
10:15 – 11:10 Spectroscopy of defects in oxidic crystals – S. Kapphan
11:10 – 11:30 Coffee break
11:30 – 12:20 Low temperature structural phase transitions: pedagogical exposition
A. Levanyuk
12:30 – 14:00 Lunch
14:00 – 15:00 Ferroelectric functional elements: device concepts, design of thin film properties, challenges in technology and physics – G. Suchanek
15:00 – 15:45 Light-induced defects in SBN:Ce crystals – A. Gubaev
15:45 – 16:00 Coffee break
16:00 – 16:45 Hollow cathode plasma jet deposition technique: principles and application for BST thin films fabrication – Z. Hubicka
16:45 – 17:05 Structural phase transition and photo-charge carrier transport in SrTiO3
F. Rossella
17:05 – 17:25 Femtosecond laser writing of surface microstructures in LiNbO3
D. Grando
17:25 – 17:50 Photorefractivity reduction in Hf-doped LiNbO3 – V. Degiorgio

17. Friday 14th
9:30 – 10:00 Role of defect chemistry on the properties of perovskite oxides: the case of manganites – L. Malavasi
10:00 – 10:45 Photo-polarons in diluted KTa1-xNbxO3: UV light-induced IR absorption and photoconductivity manifestations – V. Trepakov
10:45 – 11:00 Coffee break
11:00 – 11:45 Spectroscopic ellipsometry: principles and applications to thin perovskite oxides ferroelectric films – A. Deyneka
11:45 – 12:45 What does the theory really say about the critical thickness of ferroelectric films? – A. Levanyuk
13:00 – 14:30 Lunch
14:30 – 16:30 Visit to the laboratories

18. Prof. TREPAKOV
IOFFE.RU
ASCR Prague
UOS.DE
Prof. KAPPHAN,
Dr. A. GUBAEV
UOS.DE
Dr. SUCHANEK
DRESDEN.DE
Dr. DEJNEKA
ASCR Prague
Dr. HUBICKA
Prof. LEVANJUK,
UAM.ES

19. Prof. Paolo Camagni
(1929 – 2000)