A magnetic analog of the isotope effect in cuprates

Slides:



Advertisements
Similar presentations
Inhomogeneous Superconductivity in the Heavy Fermion CeRhIn 5 Tuson Park Department of Physics, Sungkyunkwan University, Suwon , South Korea IOP.
Advertisements

A new class of high temperature superconductors: “Iron pnictides” Belén Valenzuela Instituto de Ciencias Materiales de Madrid (ICMM-CSIC) In collaboration.
Iron pnictides: correlated multiorbital systems Belén Valenzuela Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC) ATOMS 2014, Bariloche Maria José.
Photons muons neutrons Tuning the static spin-stripe phase and superconductivity in La 2-x Ba x CuO 4 (x = 1/8) by hydrostatic pressure Zurab Guguchia.
High Temperature Superconductivity: D. Orgad Racah Institute, Hebrew University, Jerusalem Stripes: What are they and why do they occur Basic facts concerning.
Study of Collective Modes in Stripes by Means of RPA E. Kaneshita, M. Ichioka, K. Machida 1. Introduction 3. Collective excitations in stripes Stripes.
Negative Oxygen Isotope Effect on the Static Spin Stripe Order in La Ba CuO 4 Z. Guguchia, 1 R. Khasanov, 2 M. Bendele, 1 E. Pomjakushina,
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)
 Single crystals of YBCO: P. Lejay (Grenoble), D. Colson, A. Forget (SPEC)  Electron irradiation Laboratoire des Solides Irradiés (Ecole Polytechnique)
Doping and Disorder in the Oxygenated, Electron-doped High-temperature Superconductor Pr 2-x Ce x CuO 4±  The building blocks of the high-temperature.
Electronic structure of La2-xSrxCuO4 calculated by the
Superconductivity in Zigzag CuO Chains
Compound Torsional Oscillator: Frequency Dependence and Hysteresis of Supersolid 4 He (and Search for Superfluid Sound Mode) Harry Kojima Rutgers University.
Complexity as a Result of Competing Orders in Correlated Materials. Adriana Moreo Dept. of Physics and ORNL University of Tennessee, Knoxville, TN, USA.
Wendy Xu 286G 5/28/10.  Electrical resistivity goes to zero  Meissner effect: magnetic field is excluded from superconductor below critical temperature.
Rinat Ofer Supervisor: Amit Keren. Outline Motivation. Magnetic resonance for spin 3/2 nuclei. The YBCO compound. Three experimental methods and their.
Semiconductors n D*n If T>0
The attraction of  + to O 2- : using muons to study oxides Steve Blundell Clarendon Laboratory, Dept. Physics, University Of Oxford, UK.
The Three Hallmarks of Superconductivity
A1- What is the pairing mechanism leading to / responsible for high T c superconductivity ? A2- What is the pairing mechanism in the cuprates ? What would.
Magnetic transition in the Kondo lattice system CeRhSn2
Investigating the mechanism of High Temperature Superconductivity by Oxygen Isotope Substitution Eran Amit Amit Keren Technion- Israel Institute of Technology.
Ying Chen Los Alamos National Laboratory Collaborators: Wei Bao Los Alamos National Laboratory Emilio Lorenzo CNRS, Grenoble, France Yiming Qiu National.
1 Superconductivity  pure metal metal with impurities 0.1 K Electrical resistance  is a material constant (isotopic shift of the critical temperature)
MgB2 Since 1973 the limiting transition temperature in conventional alloys and metals was 23K, first set by Nb3Ge, and then equaled by an Y-Pd-B-C compound.
Pressure effect on electrical conductivity of Mott insulator “Ba 2 IrO 4 ” Shimizu lab. ORII Daisuke 1.
Polar molecules in optical lattices Ryan Barnett Harvard University Mikhail Lukin Harvard University Dmitry Petrov Harvard University Charles Wang Tsing-Hua.
Paired electron pockets in the hole-doped cuprates Talk online: sachdev.physics.harvard.edu Talk online: sachdev.physics.harvard.edu.
Pressure effect on the superconductivity of HgBa 2 Ca 2 Cu 3 O 8+  Shimizu Lab. M1 KAMADA Yukihiro.
An Introduction to Fe-based superconductors
Giorgi Ghambashidze Institute of Condensed Matter Physics, Tbilisi State University, GE-0128 Tbilisi, Georgia Muon Spin Rotation Studies of the Pressure.
Magnetic states of lightly hole- doped cuprates in the clean limit as seen via zero-field muon spin spectroscopy Kitaoka Lab Kaneda Takuya F. Coneri, S.
Competing Orders, Quantum Criticality, Pseudogap & Magnetic Field-Induced Quantum Fluctuations in Cuprate Superconductors Nai-Chang Yeh, California Institute.
Superconductivity in HgBa 2 Ca m-1 Cu m O 2m+2+δ (m=1,2, and 3) under quasihydrostatic pressures L. Gao et al., Phys. Rev. B 50, 4260 (1994) C. Ambrosch-Draxl.
D :06–4:18 PM Physikon Research  Notre Dame  Arizona State  NJIT Isotope Effect in High-T C Superconductors Dale R. Harshman Physikon Research.
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.
Peak effect in Superconductors - Experimental aspects G. Ravikumar Technical Physics & Prototype Engineering Division, Bhabha Atomic Research Centre, Mumbai.
The iron-pnictide/chalcogenide (Fe-Pn/Ch) compounds have attracted intense interest recently, largely due to the observation of high-temperature superconductivity.
Spectroscopy with a Twist Infrared magneto-polarization measurements John Cerne, University at Buffalo, SUNY, DMR Hall conductivity in the high.
Emergent Nematic State in Iron-based Superconductors
Physics Department, Technion, Israel Meni Shay, Ort Braude College, Israel and Physics Department, Technion, Israel Phys. Rev. B.
Superconducting Cobaltites Nick Vence. Definition A material which looses its electrical resistivity below a certain temperature (Tc)is said to be superconducting.
Superconductivity and magnetism in iron-based superconductor
Antiferromagnetic Resonances and Lattice & Electronic Anisotropy Effects in Detwinned La 2-x Sr x CuO 4 Crystals Crystals: Yoichi Ando & Seiki Komyia Adrian.
 = -1 Perfect diamagnetism (Shielding of magnetic field) (Meissner effect) Dynamic variational principle and the phase diagram of high-temperature superconductors.
SNS Experimental FacilitiesOak Ridge X /arb Spin dynamics in cuprate superconductors T. E. Mason Spallation Neutron Source Project Harrison Hot Springs.
Single crystal growth of Heisenberg spin ladder and spin chain Single crystal growth of Heisenberg spin ladder and spin chain Bingying Pan, Weinan Dong,
Phase Diagram of Ruthenate: Ca2-xSrxRuO4 (CSRO) (0. 0<x<2
Dipole magnets A dipole magnet gives a constant B-field.
Search for Novel Quantum Phases in
ultracold atomic gases
Electrical resistance
Experimental Evidences on Spin-Charge Separation
25th International Conference on Low Temperature Physics
Crystal Structure Refinement of Fluorine-Free LnFeAsO1-y by Neutron Diffraction AIST, Japan C. H. Lee, A. Iyo, H. Eisaki, H. Kito, T. Ito, K. Kihou, H.
B4 Single crystal growth of tunable quantum spin systems
Magnetic, structural and electronic properties of LaFeAsO1-xFx
Where are the superconductors?
Phase diagram of s-wave SC Introduction
Superconductivity in Bismuth Oxide Compounds
151Eu AND 57Fe MÖSSBAUER STUDY OF Eu1-xCaxFe2As2
Fig. 2: Gap symmetry: Comparison with Ce doping
High Temperature Superconductivity
Yoshida Lab Tatsuo Kano
Mössbauer study of BaFe2(As1-xPx)2 iron-based superconductors
Mössbauer study of BaFe2(As1-xPx)2 iron-based superconductors
WHAT IS SUPERCONDUCTIVITY?
The Motion of Charged Particles in Magnetic Fields
Neutron studies of iron-based superconductors
Presentation transcript:

A magnetic analog of the isotope effect in cuprates Amit Keren Ph.D. Amit Kanigel Ph.D. Rinat Ofer MSc. Yuval Lubashevsky Ph.D. Eran Amit Ph.D. Gil Drachuck Collaborators G. Bazalitski-Technion A. Knizhnik-Technion J. Lord-ISIS Amato-PSI O. Chmaissem-ANL Wilds-ILL P. Lemmens-Braunschweig E. Razzoli & M. Shi -PSI

What is superconductivity? Magnetization Resistivity

Superconductivity Fermions Attraction BCS Isotope effect

What are HTSC’s? Y1Ba2Cu3Oy ~15% Y Cu Ba O

The Isotope Effect Maximum 4% variation of Tc in Sn. C. A. Reynolds et. al., Phys. Rev. 84, 691 (1950). B. Serin et al., Phys. Rev. 86, 162 (1952). E. Maxwell et al., Phys. Rev. 95, 333 (1954). Maximum 4% variation of Tc in Sn. The (0,0) point is important. The is not applicable for different materials.

Our motivation To make a magnetic measurement equivalent of the isotope effect. We would like to change J, with no other structural changes, and see the effect on Tc. AFM PG SC SG We will know that we changed J if TN changes. Experimentally this is difficult but not inconceivable.

CLBLCO; Our Model Compound YBa2Cu3Oy structure. Tetragonal at all x and y. 2 planes per unit cell. Over doping is possible. Tc variation of 30%. Valance Ca=Ba=2, La=3. Similar level of disorder. Goldschmidt et al., Phys. Rev. B 48, 532 1993 CLBLCO allows Tcmax variations, with minimal structural changes.

The role of x (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy Positive change is moving out with increasing x. This alters the oxygen position.

Structural variation between families (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy Cu O q a Buckling angle and distance decreases with increasing x.

J variations between families. (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy J increases with x mainly due to decreasing buckling angle. We will verify this by TN and Tg measurements using mSR.

Principals of mSR

Principals of mSR Asymmetry = (F-B)/(F+B) Pz(t). Random Field Uniform Field Asymmetry Time Time

Raw Zero Field mSR Data There are oscillations in the ordered phase but not in the spin glass phase.

Phase Diagram of (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy The family with the highest Tcmax has the highest TN at zero doping.