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Accueil du site > Divers > Equipe 1-NMF2 > Raymond FRESARD


15 novembre 2017

Professeur ENSICAEN

contact :

Phone : 0033 (0)231 45 26 09
Fax : 0033 (0)231 95 16 00

After getting a degree of Physicien (1984) and a PhD in Physics from the University of Neuchâtel, Switzerland (1989), in the field of liquid and amorphous metals I moved to the University of Karlsruhe, Germany, where I started to work in the field of strongly correlated electrons. In 1994, I moved to Shimane University, Japan, where I accepted an Associate Professor position. I pursued research activities in the fields of strongly correlated electrons and bosons, and on the transport properties of amorphous metals. In 1996 I returned to the University of Neuchâtel, Switzerland, where I stayed until 2000. I then accepted a Professor position at the Institut des Sciences de la Matière et du Rayonnement, Caen, France, where I am pursuing research activities in the field of strongly correlated electrons, in close connection with experiment.


Condensed matter theory ; many-body problem ; disordered systems.

Search of Superconductivity in strongly correlated electron systems
Strong electronic correlations
Mott transition
Stripe phases
Magnetism in transition metals and transition metal oxides
Transport properties of liquid and amorphous metals


Dr. P. Limelette (Tours University)

Prof. Th. Kopp (Augsburg University)

Dr. U. SchwingenschlÖgl (KAUST)

Prof. A. M.Oles (Jagellonian University in Krakow)

Dr. M. Raczkowski (Würzburg University)

Prof. P. Wölfle (Karlsruhe Institute of Technology)

Prof. D. Ledue (Université de Rouen)

Prof. O. Juillet LPC (Université de Caen)

Recent selected talks
"The Slave-Boson Technique"

Talk at "The Autumn School on Correlated Electrons, Many-body Physics : From Kondo to Hubbard, Juelich, Germany, September 2015"

PDF - 5.7 Mo
"Intertwined orders of the two-dimensional Hubbard model"

Talk at "Augsburg University, Germany, January 2015"

"Competing spin, charge and pair ordering of the doped two-dimensional Hubbard model from symmetry-entangled wave-functions"

Talk at "Quantum Phenomena in Strongly Correlated Electrons, Cracovie, Pologne, June 2014"

PDF - 1.7 Mo
"Approche quantique au transport dans les matériaux"

Talk at "Ecole thèmatique CNRS THERMOELECTRICITE : de la théorie au dispositif, Carcans Maubuisson, May 2008."

PDF - 478.2 ko
"Slave bosons in radial gauge : a bridge between the path integral and the Hamiltonian language"

Talk at "The International Conference of Theoretical Physics "Electron Correlations In Nano And Macrosystems", Ustron (PL), Sept 2006."

PDF - 581.4 ko
"Electrons corrélés : une introduction"

Talk at "Rencontre scientifique de Saint-Aubin "Electrons fortement corrèlés", SOLEIL, June 2006."

PDF - 1.4 Mo
"Competition between filled and half-filled stripes in cuprates and nickelates"

Talk at "The 9th Franco-American Workshop on Complex Oxides, University of Illinois at Urbana-Champaign, January 2006."

PDF - 1.1 Mo

Review Articles

R. Daou, R. Frésard, V. Eyert, S. Hébert, and A. Maignan
Unconventional aspects of electronic transport in delafossite oxides
Sci. Technol. Adv. Mater. 18, 919 (2017)

R. Frésard
The Slave-Boson Approach to Correlated Fermions, Many-Body Physics From Kondo to Hubbard, Modeling and Simulation
Vol. 5, E. Pavarini, E. Koch and P. Coleman Eds., Verlag des Forschungszentrum Jülich, (2015)

R. Frésard, J. Kroha, and P. Wölfle
The pseudoparticle approach to strongly correlated electron systems
Springer Series in Solid-State Science 171, 65-101 (2012) SB_review_2011.pdf

R. Frésard
Approche quantique au transport dans les matériaux liquides et amorphes

PDF - 303.2 ko
Conversion d’énergie par effets thermoélectriques : théorie, matériaux et applications
S. Hébert, B. Lenoir et C. Simon, Ecole Nationale Supérieure des Mines, Nancy (2009)


A. Albaalbaky, Y. Kvashnin, D. Ledue, R. Patte, and R. Frésard
Magnetoelectric properties of the multiferroic CuCrO2 studied by means of ab initio calculations and Monte Carlo simulations
Phys. Rev. B 96, 064431 (2017) arXiv:1710.07538)

V. H. Dao and R. Frésard
Particle-hole symmetry of charge excitation spectra in the paramagnetic phase of the Hubbard model

V. H. Dao and R. Frésard
Effect of the next-nearest-neighbour hopping on the charge collective modes in the paramagnetic phase of the Hubbard model

V. H. Dao and R. Frésard
Collective modes in the paramagnetic phase of the Hubbard model
Phys. Rev. B 95, 165127 (2017) arXiv:1702.00228

O. Juillet, A. Leprévost, J. Bonnard and R. Frésard
Phaseless quantum Monte-Carlo approach to strongly correlated superconductors with stochastic Hartree-Fock-Bogoliubov wavefunctions
J. Phys. A Math. Theor. 50, 175001 (2017) arxiv:1610.08022

T. Barbier, D. Berthebaud, R. Frésard, O. I. Lebedev, E. Guilmeau, V. Eyert and A. Maignan
Structural and Thermoelectric Properties of n-type Isocubanite CuFe2S3
Inorg. Chem. Front. 4, 424 (2017)

K. Steffen, R. Frésard and T. Kopp
Capacitance and compressibility of heterostructures with strong electronic correlations
Phys. Rev. B 95, 035143 (2017) arXiv:1609.06263

R. Frésard, K. Steffen and Th. Kopp
Charge instabilities of the two-dimensional Hubbard model with attractive nearest neighbour interaction
J. Phys. : Conf. Ser. 702, 012003 (2016) arXiv:1511.02616

A. Leprévost, O. Juillet, and R. Frésard
Intertwined orders from symmetry projected wavefunctions of repulsively interacting Fermi gases in optical lattices
New J. Phys. 17, 103023 (2015)

R. Daou, R. Frésard, S. Hébert and A. Maignan
Impact of short-range order on transport properties of the two-dimensional metal PdCrO2
Phys. Rev. B 92, 245115 (2015) arXiv:1511.07614

G. Lhoutellier, R. Frésard and A. M. Oles
Fermi-liquid Landau parameters for a nondegenerate band : Spin and charge instabilities in the extended Hubbard model
Phys. Rev. B 91, 224410 (2015) arXiv:1503.05544

R. Daou, R. Frésard, S. Hébert, and A. Maignan
Large anisotropic thermal conductivity of the intrinsically two-dimensional metallic oxide PdCoO2
Phys. Rev. B 91, 041113(R) (2015) arXiv:1412.6919

A. Leprévost, O. Juillet, and R. Frésard
Exact Ground State of Strongly Correlated Electron Systems from Symmetry-Entangled Wave-Functions
Ann. Phys. (Berlin) 526,430 (2014) ArXiv:1406.2825

P. Limelette, V. Ta Phuoc, F. Gervais and R. Frésard
 ?/T scaling of the optical conductivity in strongly correlated layered cobalt oxide
Phys. Rev. B. 87, 035102 (2013) arXiv:1211.2999

C. Schuster, U.Lüders, U. Schwingenschlögl, and R.Frésard
On the ferromagnetic character of (LaVO3)m/SrVO3 superlattices
EPL 103 37003 (2013) arXiv:1211.2999

O. Juillet and R. Frésard
Exotic spin, charge and pairing correlations of the two-dimensional doped Hubbard model : a symmetry entangled mean-field approach
Phys. Rev. B 87115136 (2013) arXiv:1208.6277

U. Schwingenschlögl, C. Schuster and R.Frésard
A route to transparent bulk metals
Phys. Status Solidi Rapid Research Letter 6, 327-330 (2012)

R. Frésard, C. Hackenberger, and T. Kopp
Magnetic transitions in strong coupling expansions for nearly degenerate states
Ann. Phys. (Berlin) 524, 411-420 (2012) arXiv:1205.0425

G. Zwicknagl
Towards a better understanding of low-energy excitations in emergent
materials, ’’Expert Opinion’’

Ann. Phys. (Berlin) 524, A123 (2012)

R. Frésard and T. Kopp
Exact results with the Kotliar-Ruckenstein slave-boson representation
Ann. Phys. (Berlin) 524, 175-181 (2012) arXiv:1205.0421

S. Kremer and R. Frésard
Thermoelectric transport properties of an apparent Fermi liquid:Relation to an analytic anomaly in the density of states and application to hole-doped delafossites
Ann. Phys. (Berlin) 524, 21-36 (2012) arXiv:1110.5735

A. M.Oles
The apparent Fermi liquid concept helps to understand thermoelectric materials, ’’Expert Opinion’’
Ann. Phys. (Berlin) 524, A33 (2012)

E. Guilmeau, M.Poienar, S. Kremer, S. Marinel, S, Hébert, R. Frésard, and A. Maignan
Mg substitution in CuCrO2 delafossite compounds
Solid State Commun. 151, 1798-1801 (2011) arXiv:1110.5730

M.Casas-Cabanas, M.Frésard, U. Lüders, R. Frésard, C. Schusteret and U. Schwingenschlögl
Evidence for narrow in-gap states in doped Al2O3
Chem. Phys. Lett. 515, 29-31 (2011)

A. David, R. Frésard, Ph. Boullay, W. Prellier, U. Lüders, and P.-E.Janolin
Structural transition in LaVO3 /SrVO3superlattices and its influence on the transport properties
Appl. Phys. Lett. 98, 212106 (2011) arXiv:1105.3560

U. Schwingenschlögl and R. Frésard
On the interrelation between bulk and thin film Fermi surfaces
EPL 92, 67007 (2010)

P. Bogdanski, M.Halaoui, A. M.Oles, and R. Frésard
Optical conductivity in the vicinity of a quantum critical point
Phys. Rev. B 82, 195125 (2010)

U. Schwingenschlögl, C. Schuster, and R. Frésard
Electronic structure of a striped nickelate compound studied by the exact exchange for correlated electrons (EECE) approach
Europhys. Lett.88, 67008 (2009)

U. Lüders, W. C. Sheets, A. David, W. Prellier, and R. Frésard
Room temperature magnetism in LaVO3/SrVO3 superlattices by geometrically confined doping
Phys. Rev. B 80, 241102(R) (2009) arXiv:0912.3663

U. Schwingenschlögl, C. Schuster, and R. Frésard
Corundum-based transparent infrared absorbers
Chem. Phys. Lett.481, 62 (2009)

U. Schwingenschlögl, R. Frésard, and V. Eyert
Influence of the vacuum interface on the charge distribution in V2O3 thin films
New J. Phys.11, 093034 (2009) arXiv:0909.1335

A. Maignan, V. Eyert, C. Martin, S. Kremer, R. Frésard, and D. Pelloquin
Electronic structure and thermoelectric properties of CuRh1-xMgxO2
Phys. Rev. B 80, 115103 (2009)

A. Maignan, C. Martin, R. Frésard, V. Eyert, E. Guilmeau, S. Hébert, M.Poienar, and D. Pelloquin
On the strong impact of doping in the triangular antiferromagnet CuCrO2
Solid State Comm.149, 926 (2009) arXiv:0908.3828

U. Schwingenschlögl, C. Schuster, and R. Frésard
Stripe segregation and magnetic coupling in the nickelate La5/3Sr1/3NiO4
Ann. Phys. (Berlin) 18, 107 (2009) arXiv:0902.4556

U. Schwingenschlögl, R. Frésard, and V. Eyert
Substrate effects on V2O3 thin films
Surface Science 603, L19 (2009)

R. Frésard and Th. Kopp
Exact results in a slave boson saddle point approach for a strongly correlated electron model
Phys. Rev. B78, 073108 (2008) arXiv:0806.1101

V. Eyert, R. Frésard, and A. Maignan
Long-range magnetic order and spin-lattice coupling in the delafossite CuFeO2
Phys. Rev. B78, 052402 (2008) arXiv:0801.4787

P. Limelette, S. Hébert, H. Muguera, R. Frésard, and Ch.Simon
Dual electronic states in thermoelectric cobalt oxide Bi1.7Ca2O4]0.59CoO2
Phys. Rev. B77, 235118 (2008)

R. Frésard, H. Ouerdane, and T. Kopp
Barnes slave boson approach to the two-site single impurity Anderson model with non-local interaction
Europhys. Lett.82, 31001 (2008) arXiv:0801.4496

V. Eyert, R. Frésard, and A. Maignan
On the metallic conductivity of the delafossites PdCoO2 and PtCoO2
Chem. Matter.20, 2370 (2008) arXiv:0801.4077

U. Schwingenschlögl, C. Schuster, and R. Frésard
Magnetic ordering in the striped nickelate La5/3Sr1/3NiO4 : A band structure point of view
Europhys. Lett.81, 27002 (2008) arXiv:0711.1599

C. Grygiel, Ch. Simon, B. Mercey, W. Prellier, R. Frésard, and P. Limelette
Thickness-dependence of the electronic properties in V2O3 thin films
Appl. Phys. Lett.91, 262103 (2007) arXiv:0709.0692

R. Frésard, H. Ouerdane, and Th. Kopp
Slave bosons in radial gauge : a bridge between path integral and hamiltonian language
Nucl. Phys. B785, 286 (2007) cond-mat/0701626

M.Raczkowski, M.Capello, D. Poilblanc, R. Frésard, and A. M.Oles
Unidirectional d-wave superconducting domains in the two-dimensional t-J model
Phys. Rev. B76, 140505(R) (2007) arXiv:0708.0788

M.Miclau, J. Hejtmanek, R. Retoux, K. Knizek, Z. Jirak, R. Frésard, A. Maignan, S. Hébert, M.Hervieu, and C. Martin
Structural and magnetic transitions in CaMn1xWxO3
Chem. Matter.19, 4243 (2007)

M.Raczkowski, R. Frésard, and A. M.Oles
Effect of the next-nearest neighbor hopping on the stability and band structure of the incommensurate phases in the cuprates
ABSTRACT’>phys. stat. sol. (b)44, 2521-2526 (2007) cond-mat/0609479

V. Hardy, D. Flahaut, R. Frésard, and A. Maignan
Anisotropic susceptibility of the geometrically frustrated spin-chain compound Ca3Co2O6
J. Phys. : Condens. Matter 19, 145229 (2007) cond-mat/0701192

M.Raczkowski, D. Poilblanc, R. Frésard, and A. M.Oles
Spin-rotationally symmetric domain flux phases in underdoped cuprates
Phys. Rev. B75, 094505 (2007) cond-mat/0608441

V. Eyert, U. Schwingenschlögl, R. Frésard, A. Maignan, C. Martin, N. Nguyen, C. Hackenberger, and T. Kopp
The antiferromagnetic insulator Ca3FeRhO6 : characterization and electronic structure calculations
Phys. Rev. B75, 115105 (2007) cond-mat/0610120

P. Limelette, S. Hébert, V. Hardy, R. Frésard, Ch. Simon, and A. Maignan
Scaling behavior in thermoelectric misfit cobalt oxides
Phys. Rev. Lett. 97, 046601 (2006) cond-mat/0608264

M.Raczkowski, R. Frésard, and A. M.Oles
Interplay between incommensurate phases in the cuprates
Europhysics Lett. 76, 128 (2006) cond-mat/0606059

M.Raczkowski, R. Frésard, and A. M.Oles
Magnetic and orbital correlations in a two-site molecule
J. Phys. : Condens. Matt. 18, 7449 (2006) cond-mat/0608271

M.Raczkowski, R. Frésard, and A. M.Oles
Slave-boson approach to the metallic stripe phases with large unit cells
Phys. Rev. B73, 174525 (2006) cond-mat/0605706

M.Raczkowski, R. Frésard, and A. M.Oles
Microscopic origin of diagonal stripe phases in doped nickelates
Phys. Rev. B73, 094429 (2006) cond-mat/0604238

M.Raczkowski, A. M.Oles, and R. Frésard
Stripe phases - possible ground state of the high-Tc superconductors
Fizika Nizkikh Temperatur 32, 411 (2006) Low. Temp. Phys. 32, 305 (2006) cond-mat/0512420

V. Eyert, U. Schwingenschlögl, C. Hackenberger, T. Kopp, R. Frésard, and U. Eckern
Magnetic ordering in trigonal chain compounds
Prog. Solid State 36, 156 (2008) cond-mat/0509374

H.W Eng, P. Limelette, W. Prellier, Ch. Simon, and R. Frésard
Unconventional Hall effect in oriented Ca3Co4O9 thin films
Phys. Rev. B73, 033403 (2006) cond-mat/0511374

M.Raczkowski, A. M.Oles, and R. Frésard
Half-filled stripes in the t-t’-U Hubbard model
phys. stat. sol. (b)243, 128-132 (2006) cond-mat/0511100

P. Limelette, V. Hardy, P. Auban-Senzier, D. Jérome, D. Flahaut, S. Hébert, R. Frésard, Ch. Simon, J. Noudem, and A. Maignan
Strongly correlated properties of the thermoelectric cobalt oxide Ca3Co4O9
Phys. Rev. B71, 233108 (2005) cond-mat/0505464

R. Frésard, M.Raczkowski, and A. M.Oles
Interplay of orbitally polarized and magnetically ordered phases in doped transition metal oxides
phys. stat. sol. (b)242, 370-376 (2005) cond-mat/0502158

S. Mercone, R. Frésard, V. Caignaert, Ch. Martin, D. Saurel, C. Simon, G. André, Ph. Monod, and F. Fauth
Non-linear effects and Joule heating in I-V curves in manganites
J. Appl. Phys.98, 023911 (2005) cond-mat/0506448

V. Eyert, C. Laschinger, Th.Kopp, and R. Frésard
Extended moment formation and magnetic ordering in the trigonal chain compound Ca3Co2O6
Chem. Phys. Lett.385, 249-254 (2004) cond-mat/0401004

R. Frésard, C. Laschinger, Th.Kopp, and V. Eyert
The Origin of Magnetic Interactions in Ca3Co2O6
Phys. Rev. B69, 140405(R) (2004) cond-mat/0309031

R. Frésard and M.Lamboley
Ferromagnetism in a Realistic Two-Band Model : A Slave Boson Study

J. Low Temp. Phys.126, 1091-1105 (2002) cond-mat/0109543

R. Frésard, Ch. Martin, S. Hébert, A. Maignan, L. Pi, B. Raveau and J. Hejtmanek
Modeling of the Thermopower of Electron-Doped Manganites
Phys. Lett. A 303, 223-228 (2002)

B. Raveau, S. Hébert, A. Maignan, R. Frésard, M.Hervieu, and D. Khomskii
Rhodium Doped Manganites : Ferromagnetism and Metallicity
J. Appl. Phys.90, 1297-1302 (2001) cond-mat/0105347

S. Hébert, A. Maignan, R. Frésard, M.Hervieu, R. Retoux, Ch. Martin, and B. Raveau
Induced Ferromagnetism and Colossal Magnetoresistance by Ir-Doping in Pr1-xCaxMnO3
Eur. Phys. J. B24, 85-89 (2001) cond-mat/0112118

R. Frésard and Th. Kopp
Slave Bosons in Radial Gauge : the Correct Functional Integral Representation and Inclusion of Non-Local Interactions
Nucl. Phys. B594, 769-789 (2000) cond-mat/0011296

R. Frésard and A. Ruckenstein
Superconducting and magnetic fluctuations of the two-dimensional Hubbard model
Physica B281-282, 890-891 (2000)

M.Hengsberger, R. Frésard, D. Purdie, P. Segovia, and Y. Baer
Electron-Phonon Coupling in Photoemission Spectra
Phys. Rev. B60, 10 796-10 802 (1999)

M.Yu. Kagan, R. Frésard, M.Capezzali, and H. Beck
One-electron Spectral Function of the Attractive Hubbard Model for Intermediate Coupling
Phys. Rev. B57, 5995-6002 (1998) cond-mat/9704136

W. Zimmermann and R. Frésard
Spin and charge dynamics of the 2-dimensional t-t’-U Model
Phys. Rev. B58, 15 288-15 291 (1998) cond-mat/9812242

R. Frésard and G. Kotliar
Interplay of Mott Transition and Ferromagnetism in the Orbitally Degenerate Hubbard Model
Phys. Rev. B56, 12 909-12 915(1997) cond-mat/9612172

W. Zimmermann, R. Frésard, and P. Wölfle
Spin and Charge Structure Factors of the 2-d Hubbard Model
Phys. Rev. B56, 10 097-10 104 (1997) cond-mat/9705088

U. Werner and R. Frésard
Temperature Dependence of Transport Coefficients in Liquid and Amorphous Metals
Z. Phys. B-Condens. Matter 104, 379-386 (1997) cond-mat/9605089

R. Frésard and P. Wölfle
Unified Slave Boson Representation of Spin and Charge Degrees of Freedom for Strongly Correlated Fermi Systems
Int. J. Mod. Phys. B6, 685 (1992)