Erio Tosatti
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Erio Tosatti (born 9 November 1943 in
Nonantola Nonantola ( Modenese: ) is a town and ''comune'' in the province of Modena in the Emilia-Romagna region of northern Italy. It is in the Po Valley about from Modena on the road to Ferrara. History In ancient times the territory of Nonantola was in ...
) is an Italian
theoretical physicist Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena. This is in contrast to experimental physics, which uses experi ...
active at the
International School for Advanced Studies The International School for Advanced Studies (Italian: ''Scuola Internazionale Superiore di Studi Avanzati''; SISSA) is an international, state-supported, post-graduate-education and research institute in Trieste, Italy. SISSA is active in th ...
(SISSA), and at the Abdus Salam International Centre for Theoretical Physics (ICTP), both in
Trieste Trieste ( , ; ) is a city and seaport in northeastern Italy. It is the capital and largest city of the Regions of Italy#Autonomous regions with special statute, autonomous region of Friuli-Venezia Giulia, as well as of the Province of Trieste, ...
,
Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
. He is a broad-scope theorist who carried out research on a wide range of
condensed matter physics Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of matter, especially the solid and liquid State of matter, phases, that arise from electromagnetic forces between atoms and elec ...
phenomena. His early work dealt with optical properties, electron energy loss, theory of
exciton An exciton is a bound state of an electron and an electron hole which are attracted to each other by the electrostatic Coulomb's law, Coulomb force resulting from their opposite charges. It is an electrically neutral quasiparticle regarded as ...
s and nonlocal dielectric response in solids, including layer crystals such as
graphite Graphite () is a Crystallinity, crystalline allotrope (form) of the element carbon. It consists of many stacked Layered materials, layers of graphene, typically in excess of hundreds of layers. Graphite occurs naturally and is the most stable ...
and
semiconductor A semiconductor is a material with electrical conductivity between that of a conductor and an insulator. Its conductivity can be modified by adding impurities (" doping") to its crystal structure. When two regions with different doping level ...
s; charge- and spin-density-waves; surface physics in all its aspects, particularly reconstruction, roughening and melting, also in clusters; the prediction the
Berry phase In classical and quantum mechanics, geometric phase is a phase difference acquired over the course of a cycle, when a system is subjected to cyclic adiabatic processes, which results from the geometrical properties of the parameter space of the ...
in fullerene; the first calculated STM map of graphite, now a standard in the field; matter at extreme pressures:
carbon Carbon () is a chemical element; it has chemical symbol, symbol C and atomic number 6. It is nonmetallic and tetravalence, tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 ...
,
oxygen Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), non ...
,
hydrogen Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter ...
, , iron at earth core conditions,
water Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known liv ...
and
ammonia Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the chemical formula, formula . A Binary compounds of hydrogen, stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinctive pu ...
at deep planetary conditions, pressure-induced insulator-metal transitions in layer compounds like
MoS2 Molybdenum disulfide (or moly) is an inorganic compound composed of molybdenum and sulfur. Its chemical formula is . The compound is classified as a transition metal dichalcogenide. It is a silvery black solid that occurs as the mineral molybde ...
. In nanophysics, he and his group predicted helical structures of metal
nanowire file:SnSe@SWCNT.jpg, upright=1.2, Crystalline 2×2-atom tin selenide nanowire grown inside a single-wall carbon nanotube (tube diameter ≈1 nm). A nanowire is a nanostructure in the form of a wire with the diameter of the order of a nanometre ( ...
s; the spontaneous magnetism of metal nanocontacts, including the electronic circumstances for normal or ferromagnetic
Kondo effect In physics, the Kondo effect describes the scattering of conduction electrons in a metal due to magnetic impurities, resulting in a characteristic change i.e. a minimum in electrical resistivity with temperature. The cause of the effect was firs ...
therein. His and his collaborator's theory of strongly correlated
superconductivity Superconductivity is a set of physical properties observed in superconductors: materials where Electrical resistance and conductance, electrical resistance vanishes and Magnetic field, magnetic fields are expelled from the material. Unlike an ord ...
was recently confirmed in compounds such as Cs3C60. Pioneering papers on
quantum annealing Quantum annealing (QA) is an optimization process for finding the global minimum of a given objective function over a given set of candidate solutions (candidate states), by a process using quantum fluctuations. Quantum annealing is used mainly ...
are now basic to current developments in
quantum computing A quantum computer is a computer that exploits quantum mechanical phenomena. On small scales, physical matter exhibits properties of wave-particle duality, both particles and waves, and quantum computing takes advantage of this behavior using s ...
. More recently he moved on to the theory of nanofriction, a field where he obtained th
ERC Advanced Grant MODPHYSFRICT
2013–2019, and subsequently, as co-PI with an experimental group, another
ERC Advanced Grant ULTRADISS 2019-2024
. More details of his current and past research activity can be foun
here


Life

Born of a peasant family, he made it to the renowned Istituto tecnico industriale Fermo Corni high school of
Modena Modena (, ; ; ; ; ) is a city and ''comune'' (municipality) on the south side of the Po Valley, in the Province of Modena, in the Emilia-Romagna region of northern Italy. It has 184,739 inhabitants as of 2025. A town, and seat of an archbis ...
, where his early subjects were technical and practical—electronics, nuclear technology, etc. Skills that allowed him to earn a living as a
technician A technician is a worker in a field of technology who is proficient in the relevant skill and technique, with a relatively practical understanding of the theoretical principles. Specialisation The term technician covers many different special ...
in a
human physiology The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organs and then organ systems. The external human body consists of a head, hair, neck, ...
research laboratory A research institute, research centre, or research organization is an establishment founded for doing research. Research institutes may specialize in basic research or may be oriented to applied research. Although the term often implies natural ...
while studying physics at the local Universita' di Modena. Associated from boyhood to Modena's renowned Societa' Corale Rossini directed b
Livio Borri
a great music teacher, he sang for some years
opera Opera is a form of History of theatre#European theatre, Western theatre in which music is a fundamental component and dramatic roles are taken by Singing, singers. Such a "work" (the literal translation of the Italian word "opera") is typically ...
and church music within the choir which included among others the young
Luciano Pavarotti Luciano Pavarotti (, , ; 12 October 19356 September 2007) was an Italian operatic tenor who during the late part of his career crossed over into popular music, eventually becoming one of the most acclaimed tenors of all time. He made numerou ...
. His physics degree ( Universita' di Modena 1967) was on pion-nucleon
phase shift In physics and mathematics, the phase (symbol φ or ϕ) of a wave or other periodic function F of some real variable t (such as time) is an angle-like quantity representing the fraction of the cycle covered up to t. It is expressed in such a s ...
dispersion relations, a subject suggested by Daniele Amati. Admitted to doctoral studies in Pisa's famous
Scuola Normale Superiore The Scuola Normale Superiore (commonly known in Italy as "la Normale") is a public university in Pisa and Florence, Tuscany, Italy, currently attended by about 600 undergraduate and postgraduate (PhD) students. Together with the University of Pi ...
he switched to the burgeoning field of solid state physics in the freshly established research group of Franco G. Bassani working on the optical properties of semiconductors. His doctoral work (Scuola Normale Superiore, Pisa 1970) employed optical and electron energy loss data along with dispersion relations typical of
high energy physics Particle physics or high-energy physics is the study of fundamental particles and forces that constitute matter and radiation. The field also studies combinations of elementary particles up to the scale of protons and neutrons, while the stu ...
to work out the anisotropic dielectric tensor of graphite, later useful in the context of
graphene Graphene () is a carbon allotrope consisting of a Single-layer materials, single layer of atoms arranged in a hexagonal lattice, honeycomb planar nanostructure. The name "graphene" is derived from "graphite" and the suffix -ene, indicating ...
. After serving as a weather forecast under-lieutenant ( GARF) for his (then compulsory) military service in the
Italian Air Force The Italian Air Force (; AM, ) is the air force of the Italy, Italian Republic. The Italian Air Force was founded as an independent service arm on 28 March 1923 by Victor Emmanuel III of Italy, King Victor Emmanuel III as the ("Royal Air Force ...
, he moved to University of Rome—where he also collaborated with
Ugo Fano Ugo Fano (July 28, 1912 – February 13, 2001) was an Italian American physicist, notable for contributions to theoretical physics. Biography Ugo Fano was born into a wealthy Jewish family in Turin, Italy. His father was Gino Fano, a professo ...
—with a researcher position of Italy's National Research Council (CNR) . That position allowed him freedom to leave for a joint 18-month long
Royal Society The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, re ...
-
NATO The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member s ...
fellowship to the
Cavendish Laboratory The Cavendish Laboratory is the Department of Physics at the University of Cambridge, and is part of the School of Physical Sciences. The laboratory was opened in 1874 on the New Museums Site as a laboratory for experimental physics and is named ...
, at the
University of Cambridge The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209, the University of Cambridge is the List of oldest universities in continuous operation, wo ...
, UK, where in 1972-73 he collaborated with Philip W. Anderson. He also spent most of 1974 with a DFG fellowship at the
University of Stuttgart The University of Stuttgart () is a research university located in Stuttgart, Germany. It was founded in 1829 and is organized into 10 faculties. It is one of the oldest technical universities in Germany with programs in civil, mechanical, ind ...
in the group of Hermann Haken and most of 1977 at
Stanford University Leland Stanford Junior University, commonly referred to as Stanford University, is a Private university, private research university in Stanford, California, United States. It was founded in 1885 by railroad magnate Leland Stanford (the eighth ...
, in the group of Sebastian Doniach . From
Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...
he was called to Trieste in 1977 by
Abdus Salam Mohammad Abdus Salam Salam adopted the forename "Mohammad" in 1974 in response to the anti-Ahmadiyya decrees in Pakistan, similarly he grew his beard. (; ; 29 January 192621 November 1996) was a Pakistani theoretical physicist. He shared the 1 ...
and Paolo Budinich to start within the
International Centre for Theoretical Physics The Abdus Salam International Centre for Theoretical Physics (ICTP) is a research center for physical and mathematical sciences, located in Trieste, Friuli-Venezia Giulia, Italy. The center operates under a tripartite agreement between the Gov ...
the ICTP Condensed Matter Theory Group, now flourishing. In 1980 he also became a professor at the newly established
International School for Advanced Studies The International School for Advanced Studies (Italian: ''Scuola Internazionale Superiore di Studi Avanzati''; SISSA) is an international, state-supported, post-graduate-education and research institute in Trieste, Italy. SISSA is active in th ...
(SISSA), where he founded and directed for 27 years the Condensed Matter Theory group, and where he still works. From 1977 onwards his double involvement with SISSA and ICTP kept him in Trieste, with the exception of a sabbatical year at the IBM Zurich Research Laboratory where in 1984-85 he also collaborated with K. Alex Muller, as well as with
Heinrich Rohrer Heinrich Rohrer (6 June 1933 – 16 May 2013) was a Swiss physicist who shared half of the 1986 Nobel Prize in Physics with Gerd Binnig for the design of the scanning tunneling microscope (STM). The other half of the Prize was awarded to Ernst R ...
and
Gerd Binnig Gerd Binnig (; born 20 July 1947) is a German physicist. He is most famous for having won the Nobel Prize in Physics jointly with Heinrich Rohrer in 1986 for the invention of the scanning tunneling microscope. Early life and education Binnig wa ...
. His strong connection to the ICTP also brought him to serve as Director in 2002–2003.


Honors

Tosatti was elected a Fellow of the
American Physical Society The American Physical Society (APS) is a not-for-profit membership organization of professionals in physics and related disciplines, comprising nearly fifty divisions, sections, and other units. Its mission is the advancement and diffusion of ...
in 2001, a corresponding member of the
Accademia Nazionale dei Lincei The (; literally the "Academy of the Lynx-Eyed"), anglicised as the Lincean Academy, is one of the oldest and most prestigious European scientific institutions, located at the Palazzo Corsini on the Via della Lungara in Rome, Italy. Founded in ...
in 2006, a foreign member of the U.S. National Academy of Sciences in 2011, a member of th
Accademia Istituto Lombardo
in 2012, a winner of the 2018 Enrico Fermi Prize of the
Italian Physical Society The Italian Physical Society () is a non-profit organization whose aim is to promote, encourage, protect the study and the progress of physics in Italy and in the world. It was founded in 1897. It is associated with the journal series ''Nuovo Cime ...
, https://en.sif.it/activities/fermi_award and in 2019 a foreign member of the
Chinese Academy of Sciences The Chinese Academy of Sciences (CAS; ) is the national academy for natural sciences and the highest consultancy for science and technology of the People's Republic of China. It is the world's largest research organization, with 106 research i ...
, the only Italian to be so honored. For his research he had also been awarded th
Burstein Lecture
of the
University of Pennsylvania The University of Pennsylvania (Penn or UPenn) is a Private university, private Ivy League research university in Philadelphia, Pennsylvania, United States. One of nine colonial colleges, it was chartered in 1755 through the efforts of f ...
in 1994, th
Francesco Somaini Prize
in 1997, and a vast number of invited colloquia and named lectures worldwide. For his long-lasting efforts in favor of scientists in less fortunate countries he was awarded the 200
AIP Tate Medal
whose citation states that osatti”has probably left much deeper marks in many countries than most of the programs that make the headlines”. For these merits th
Spirit of Abdus Salam award
was also bestowed upon him in August 2020.


References

{{DEFAULTSORT:Tosatti, Erio 1943 births Living people Fellows of the American Physical Society 20th-century Italian physicists Foreign associates of the National Academy of Sciences Foreign members of the Chinese Academy of Sciences 21st-century Italian physicists