Urbana-Champaign, 2008 Band structure of strongly correlated materials from the Dynamical Mean Field perspective K Haule Rutgers University Collaborators.

Slides:

Advertisements

Similar presentations

A new class of high temperature superconductors: “Iron pnictides” Belén Valenzuela Instituto de Ciencias Materiales de Madrid (ICMM-CSIC) In collaboration.

Advertisements

Iron pnictides: correlated multiorbital systems Belén Valenzuela Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC) ATOMS 2014, Bariloche Maria José.

BiS 2 compounds: Properties, effective low- energy models and RPA results George Martins (Oakland University) Adriana Moreo (Oak Ridge and Univ. Tennessee)

Study of Collective Modes in Stripes by Means of RPA E. Kaneshita, M. Ichioka, K. Machida 1. Introduction 3. Collective excitations in stripes Stripes.

Some interesting physics in transition metal oxides: charge ordering, orbital ordering and spin-charge separation C. D. Hu Department of physics National.

Recap: U(1) slave-boson formulation of t-J model and mean field theory Mean field phase diagram LabelStateχΔb IFermi liquid≠ 0= 0≠ 0 IISpin gap≠ 0 = 0.

D-wave superconductivity induced by short-range antiferromagnetic correlations in the Kondo lattice systems Guang-Ming Zhang Dept. of Physics, Tsinghua.

The new iron-based superconductor Hao Hu The University of Tennessee Department of Physics and Astronomy, Knoxville Course: Advanced Solid State Physics.

Kitaoka Lab. M1 Yusuke Yanai Wei-Qiang Chen et al., EPL, 98 (2012)

Physics “Advanced Electronic Structure” Lecture 3. Improvements of DFT Contents: 1. LDA+U. 2. LDA+DMFT. 3. Supplements: Self-interaction corrections,

Electronic structure of La2-xSrxCuO4 calculated by the

Electrical transport and magnetic interactions in 3d and 5d transition metal oxides Kazimierz Conder Laboratory for Developments and.

Wendy Xu 286G 5/28/10.  Electrical resistivity goes to zero  Meissner effect: magnetic field is excluded from superconductor below critical temperature.

Collaborators: G.Kotliar, S. Savrasov, V. Oudovenko Kristjan Haule, Physics Department and Center for Materials Theory Rutgers University Electronic Structure.

Modeling strongly correlated electron systems using cold atoms Eugene Demler Physics Department Harvard University.

Extended Dynamical Mean Field. Metal-insulator transition el-el correlations not important:  band insulator: the lowest conduction band is fullthe lowest.

Bishop’s Lodge, Santa Fe 2007 Modelling the Localized to Itinerant Electronic Transition in the Heavy Fermion System CeIrIn 5 K Haule Rutgers University.

Urbana-Champaign, 2008 Band structure of strongly correlated materials from the Dynamical Mean Field perspective K Haule Rutgers University Collaborators.

Tallahassee, 2008 Band structure of strongly correlated materials from the Dynamical Mean Field perspective K Haule Rutgers University Collaborators :

Electronic Structure of Strongly Correlated Materials : a DMFT Perspective Gabriel Kotliar Physics Department and Center for Materials Theory Rutgers University.

1 Sonia Haddad LPMC, Département de Physique, Faculté des Sciences de Tunis, Tunisia Collaboration N. Belmechri, (LPS, Orsay, France) M. Héritier, (LPS,

Iron based high temperature superconductors

K Haule Rutgers University

Kristjan Haule, Physics Department and Center for Materials Theory

THE STATE UNIVERSITY OF NEW JERSEY RUTGERS Hubbard model  U/t  Doping d or chemical potential  Frustration (t’/t)  T temperature Mott transition as.

Iron based high temperature superconductors

The alpha to gamma transition in Cerium: a theoretical view from optical spectroscopy Kristjan Haule a,b and Gabriel Kotliar b a Jožef Stefan Institute,

Optical Properties of Strongly Correlated Electrons: A Dynamical Mean Field Approach G. Kotliar Physics Department and Center for Materials Theory Rutgers.

Towards Realistic Electronic Structure Calculations of Correlated Materials Exhibiting a Mott Transition. Gabriel Kotliar Physics Department and Center.

Electronic Structure of Strongly Correlated Materials : a DMFT Perspective Gabriel Kotliar Physics Department and Center for Materials Theory Rutgers University.

Spectral Density Functional: a first principles approach to the electronic structure of correlated solids Gabriel Kotliar Physics Department and Center.

Transition Metal Complex Bonding and Spectroscopy Review

IJS Strongly correlated materials from Dynamical Mean Field Perspective. Thanks to: G.Kotliar, S. Savrasov, V. Oudovenko DMFT(SUNCA method) two-band Hubbard.

First Principles Investigations of Plutonium Americium and their Mixtures using Dynamical Mean Field Theory Washington February 5-8 (2007). Gabriel.Kotliar.

Organic Conductors and Superconductors: signatures of electronic correlations Martin Dressel 1. Physikalisches Institut der Universit ä t Stuttgart Outline.

THE STATE UNIVERSITY OF NEW JERSEY RUTGERS La 1-x Sr x TiO 3 photoemission.

APS Meeting, New Orleans, 2008 Modeling the Localized to Itinerant Electronic Transition in the Heavy Fermion System CeIrIn 5 K Haule Rutgers University.

Dynamical Mean Field Theory of the Mott Transition Gabriel Kotliar Physics Department and Center for Materials Theory Rutgers University Jerusalem Winter.

IV. Electronic Structure and Chemical Bonding J.K. Burdett, Chemical Bonding in Solids Experimental Aspects (a) Electrical Conductivity – (thermal or optical)

Mössbauer study of iron-based superconductors A. Błachowski 1, K. Ruebenbauer 1, J. Żukrowski 2 1 Mössbauer Spectroscopy Division, Institute of Physics,

Mon, 6 Jun 2011 Gabriel Kotliar

Microscopic nematicity in iron superconductors Belén Valenzuela Instituto de Ciencias Materiales de Madrid (ICMM-CSIC) In collaboration with: Laura Fanfarillo.

Dynamical Mean Field Theory Approach to the Electronic Structure Problem of Solids Gabriel Kotliar Physics Department and Center for Materials Theory.

Rutgers Colloquium, 2008 Predicting and Understanding Correlated Electron Materials: A Computational Approach Kristjan Haule Collaborators: J.H. Shim &

U Si Ru Hidden Order in URu2Si2: can we now solve this riddle ? Gabriel Kotliar Work in collaboration with Kristjan Haule K. Haule and G. Kotliar EPL 89.

Physics “Advanced Electronic Structure” Lecture 7.1. Response to Time-Dependent Fields Contents: 1. Time-Dependent DFT and Linear Response. 2. Response.

An Introduction to Fe-based superconductors

The first principle calculation study on half-metallic spinel My research work: Presenter: Min Feng Advisor: Professor Xu Zuo College of Information Technical.

Neutron Scattering Studies of Tough Quantum Magnetism Problems

F.F. Assaad. MPI-Stuttgart. Universität-Stuttgart Numerical approaches to the correlated electron problem: Quantum Monte Carlo.  The Monte.

Generalized Dynamical Mean - Field Theory for Strongly Correlated Systems E.Z.Kuchinskii 1, I.A. Nekrasov 1, M.V.Sadovskii 1,2 1 Institute for Electrophysics.

Institute of Metal Physics

Fe As A = Ca, Sr, Ba Superconductivity in system AFe 2 (As 1-x P x ) 2 Dulguun Tsendsuren Kitaoka Lab. Division of Frontier Materials Sc. Department of.

Helical Spin Order in SrFeO 3 and BaFeO 3 Zhi Li Yukawa Institute for Theoretical Physics (YITP) Collaborator: Robert Laskowski (Vienna Univ.) Toshiaki.

Massimo Capone WHEN MOTT MEETS BCS: MOLECULAR CONDUCTORS AND THE SEARCH FOR HIGH Tc SUPERCONDUCTIVITY Massimo Capone ICAM BU Workshop – Digital Design.

Lecture 20, p 1 Lecture 20: Consequences of Quantum Mechanics: Effects on our everyday lives.

Low-temperature properties of the t 2g 1 Mott insulators of the t 2g 1 Mott insulators Interatomic exchange-coupling constants by 2nd-order perturbation.

Interplay between magnetism and superconductivity in Fe-pnictides Institute for Physics Problems, Moscow, July 6, 2010 Andrey Chubukov University of Wisconsin.

Magnetism Close to the Metal-Insulator Transition in V 2 O 3 The Metal-Insulator Transition in V 2 O 3 Metallic V 2-y O 3 - Quantum critical heavy fermions.

Electronic phase behavior in spin-orbit Mott materials Stephen Wilson, Boston College, DMR Our group is currently working to explore an exciting.

Antiferromagnetic Resonances and Lattice & Electronic Anisotropy Effects in Detwinned La 2-x Sr x CuO 4 Crystals Crystals: Yoichi Ando & Seiki Komyia Adrian.

Magnetism of the regular and excess iron in Fe1+xTe

Zlatko Tesanovic, Johns Hopkins University o Strongly correlated.

Quantum Hall Effect and Fractional Quantum Hall Effect.

Pengcheng Dai The University of Tennessee (UT) Institute of Physics, Chinese Academy of Sciences (IOP) Evolution of spin excitations.

A New Piece in The High T c Superconductivity Puzzle: Fe based Superconductors. Adriana Moreo Dept. of Physics and ORNL University of Tennessee, Knoxville,

Evolution of the orbital Peierls state with doping

R. Nourafkan, G. Kotliar, A.-M.S. Tremblay

UC Davis conference on electronic structure, June. 2009

Spin-orbit coupling and coupled charge-spin-orbital state in iridates

Presentation transcript:

Urbana-Champaign, 2008 Band structure of strongly correlated materials from the Dynamical Mean Field perspective K Haule Rutgers University Collaborators : J.H. Shim & Gabriel Kotliar

LaOFeP3.2K, JACS-2006 a=3.964A, c=8.512A PrF x O 1-x FeAs d)52K, unpublished a=3.985A, c=8.595A SmF x O 1-x FeAs c) 43K, cm/ a=3.940A, c=8.496A CeF x O 1-x FeAs b)41 K, cm/ a=3.996A, c=8.648A LaF x O 1-x FeAs a)26 K, JACS-2008 a=4.036A, c=8.739 A La 1-x Sr x OFeAs25K, cm/ , a=4.035A, c = 8.771A LaCa x O 1+x FeAs0 K LaF x O 1-x NiAs2.75K, cm/ a =4.119A, c=8.180A La 1-x Sr x ONiAs3.7K, cm/ a=4.045A, c=8.747A x~5-20% Fe, Ni As, P La,Sm,Ce O 2D square lattice of Fe Fe - magnetic moment As-plays the role of O in cuprates Smaller c Higher T c Iron based high-Tc superconductors a)Y. Kamihara et.al., Tokyo, JACS b)X.H. Chen, et.al., Beijing, cm/ c)G.F. Chen et.al., Beijing, cm/ d)Z.A. Ren et.al, Beijing, unpublished

Y. Kamihara et.al., J. Am. Chem. Soc. XXXX, XXX (2008) A.S. Sefat. et.al., cond-mat/ Specific heat consistent with nodes! Possibly d wave.. Kink in resistivity maybe SDW LaF x O 1-x FeAs

Y. Kamihara, J. Am. Chem. Soc. XXXX, XXX (2008) Undoped compound: Huge resistivity Doped compound: Large resistivity >> opt. dop. Cuprates Huge spin susceptibility (  >> 100 bigger than in LSCO 50 x Pauli) Spin susceptibility of an almost free spins  ~C/(T+120K) with C of S~1 Wilson’s ratio R~1 F 0 a small LaF x O 1-x FeAs

LDA: phonons-Tc<1K KH, J.H. Shim, G. Kotliar, cond/mat LDA: Mostly iron bands at EF (correlations important) LDA DOS 6 electrons in 5 Fe bands: Filling 6/10 LDA for LaOFeAs x 2 -y 2 yz, xz z2z2 xy 60meV 160meV 60meV

LDA+DMFT: LaOFeAs is at the verge of the metal-insulator transition (for realistic U=4eV, J=0.7eV) For a larger (U=4.5, J=0.7eV) Slater insulator Not a one band model: all 5 bands important (for J>0.3) DMFT for LaF x O 1-x FeAs Need to create a singlet out of spin and orbit

In LaOFeAs semiconducting gap is opening Large scattering rate at 116K Optical conductivity of a bad metal No Drude peak Electron pockets around M and A upon doping DMFT for LaF x O 1-x FeAs T=116 K 10% doping