Coulomb Drag in a Strongly Correlated Double Layer 2D Electron System

Slides:

Advertisements

Similar presentations

Stalking the Exciton Condensate: Exotic Behavior of Electrons

Advertisements

Chapter 2-4. Equilibrium carrier concentrations

Abteilung Festkörperphysik Solid State Physics University of Ulm Abteilung Festkörperphysik Solid State Physics University of Ulm Note that 1µm =

H. Okamura, M. Matsubara, T. Nanba – Kobe Univ.

Coulomb Drag in Graphene Antti-Pekka Jauho 1,2 1 MIC-Department of Micro and Nanotechnology, DTU 2 Laboratory of Physics, TKK Two electronic systems in.

The story so far.. The first few chapters showed us how to calculate the equilibrium distribution of charges in a semiconductor np = ni2, n ~ ND for n-type.

Time fluctuations in density and dielectric constant of low and high density liquid water ERIK LASCARIS, Boston University Cui Zhang, UC Davis Giulia A.

Nanostructures on ultra-clean two-dimensional electron gases T. Ihn, C. Rössler, S. Baer, K. Ensslin C. Reichl and W. Wegscheider.

Josepson Current in Four-Terminal Superconductor/Exciton- Condensate/Superconductor System S. Peotta, M. Gibertini, F. Dolcini, F. Taddei, M. Polini, L.

TEST GRAINS AS A NOVEL DIAGNOSTIC TOOL B.W. James, A.A. Samarian and W. Tsang School of Physics, University of Sydney NSW 2006, Australia

Plasmonics in double-layer graphene

Search for high temperature superconductivity of Sr 2 VO 4 under high pressure Shimizu Lab Kaide Naohiro.

Superconductivity in Zigzag CuO Chains

Excitonic BEC in in Quantum Hall Bilayers Ramin Abolfath NRCC Anton Burkov UCSB Jim Eisenstein Cal Tech. Steve Girvin Yale Yogesh Joglekar LANL Jairo Sinova.

Correlated Electron Systems: Challenges and Future Gabriel Kotliar Rutgers University.

Chaos and interactions in nano-size metallic grains: the competition between superconductivity and ferromagnetism Yoram Alhassid (Yale) Introduction Universal.

Department of Aeronautics and Astronautics NCKU Nano and MEMS Technology LAB. 1 Chapter IV June 14, 2015June 14, 2015June 14, 2015 P-n Junction.

B.Spivak University of Washington with S. Kivelson, S. Sondhi, S. Parameswaran A typology of quantum Hall liquids. Weakly coupled Pfaffian state as a type.

Temperature dependent magnetization and magnetic phases of conduction-band dilute-magnetic-semiconductor quantum wells with non-step-like density of states.

Activation energies and dissipation in biased quantum Hall bilayer systems at. B. Roostaei [1,2], H. A. Fertig [3,4], K. J. Mullen [2], S. Simon [5] [1]

Superconductivity Characterized by- critical temperature T c - sudden loss of electrical resistance - expulsion of magnetic fields (Meissner Effect) Type.

Quantized Hall effect. Experimental systems MOSFET’s (metal- oxide-semiconductor- field-effect-transistor.) Two-dimensional electron gas on the “capacitor.

F. Cheung, A. Samarian, W. Tsang, B. James School of Physics, University of Sydney, NSW 2006, Australia.

Novel Architecture of Illuminable Variable Density Two-Dimensional Electron System S.Brandsen, J. Pollanen, J.P. Eisenstein Institute for Quantum Information.

1/f noise in devices 전광선.

Photoluminescence and lasing in a high-quality T-shaped quantum wires M. Yoshita, Y. Hayamizu, Y. Takahashi, H. Itoh, and H. Akiyama Institute for Solid.

Photoluminescence and lasing in a high-quality T-shaped quantum wires M. Yoshita, Y. Hayamizu, Y. Takahashi, H. Itoh, and H. Akiyama Institute for Solid.

SNS picture “Recent Developments in the Study of Strongly Correlated Electronic Systems” E. Dagotto, UT-ORNL SNS , HFIR Nanocenter (CNMS) March 2005.

Two Particle Response in Cluster Dynamical Mean Field Theory Rosemary F. Wyse, Aspen Center for Physics, PHY/DMR Dynamical Mean Field Theory is.

How does Superconductivity Work? Thomas A. Maier.

Thin-film Giaever transformer

IPTC workshop in China Mahn Won Kim (1), Joon Heon Kim (1,2) (1) Dept. of Physics, KAIST, (2) APRI, GIST Adsorption and Transport of a Small Molecule on.

ENE 311 Lecture 9.

Pressure effect on electrical conductivity of Mott insulator “Ba 2 IrO 4 ” Shimizu lab. ORII Daisuke 1.

Michael Browne 11/26/2007.

Paired electron pockets in the hole-doped cuprates Talk online: sachdev.physics.harvard.edu Talk online: sachdev.physics.harvard.edu.

Journal Club recent papers cont. Ruilong Guo

Slide # 1 Variation of PL with temperature and doping With increase in temperature: –Lattice spacing increases so bandgap reduces, peak shift to higher.

J.P. Eisenstein, Caltech, DMR When two layers of electrons are brought close together in the presence of an intense magnetic field a new state.

1 Disorder and Zeeman Field-driven superconductor-insulator transition Nandini Trivedi The Ohio State University “Exotic Insulating States of Matter”,

Ady Stern (Weizmann) Papers: Stern & Halperin , PRL

Quasi-1D antiferromagnets in a magnetic field a DMRG study Institute of Theoretical Physics University of Lausanne Switzerland G. Fath.

If a 2D metal, also known as a quantum Hall system (QHS), is cooled down to not-too-low temperature, its electrical properties are strongly influenced.

Sid Nb device fabrication Superconducting Nb thin film evaporation Evaporate pure Nb to GaAs wafer and test its superconductivity (T c ~9.25k ) Tc~2.5K.

J.P. Eisenstein, Caltech, DMR If it were not for the Coulomb repulsion between electrons, iron would not be ferromagnetic. It would instead be.

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Electronically smectic-like phase in a nearly half-doped manganite J. A. Fernandez-Baca.

Shear and Bulk Viscosities of Hot Dense Matter Joe Kapusta University of Minnesota New Results from LHC and RHIC, INT, 25 May 2010.

Single Electron Transistor (SET) CgCg dot VgVg e-e- e-e- gate source drain channel A single electron transistor is similar to a normal transistor (below),

Disordering of a quantum Hall superfluid M.V. Milovanovic, Institute of Physics, Belgrade, Serbia.

The identification of the fluctuation effects related to the turbulence and “permanent” layers in the atmosphere of Venus from radio occultation data V.N.Gubenko.

6/7/2016 Iron Superconductivity !! o Superconducting Gap in FeAs from PCAR o “Minimal” Model of FeAs planes – Different from CuO 2 !! o Multiband Magnetism.

Cytomechanics of Osteoblasts and Osteoblast-like cells Dept. of Experimental Orthopaedics and Biomechanics Prof. Dr.David B.Jones.

B. Spivak, UW S. Kivelson, Stanford 2D electronic phases intermediate between the Fermi liquid and the Wigner crystal (electronic micro-emulsions)

Igor Lukyanchuk Amiens University

Igor Luk’yanchuk, Yakov Kopelevich

Search of a Quantum Critical Point in High Tc Superconductors

Diffusion currents ECE 2204.

QHE discovered by Von Klitzing in 1980

Phase Diagrams: Solid, Liquid & Gas Roadmaps

Variance priming for spatially nonoverlapping prime–target pairs.

Superconductivity in Bismuth Oxide Compounds

UC Davis conference on electronic structure, June. 2009

Observations of Nascent Superfluidity in a Bilayer Two-Dimensional

Correlations of Electrons in Magnetic Fields

Quantum complexity in condensed matter physics

High Temperature Superconductivity

News from Princeton Flatlands!

FSU Physics Department

Fig. 4 SOT-driven perpendicular magnetization switching in the FGT/Pt bilayer device. SOT-driven perpendicular magnetization switching in the FGT/Pt bilayer.

Fig. 4 Behavior of resistance peak near density nm = 5.

Presentation transcript:

Coulomb Drag in a Strongly Correlated Double Layer 2D Electron System Melinda Kellogg James Eisenstein Loren Pfeiffer Ken West

Coulomb Drag V I e- e- e- e- Al0.9Ga0.1As nlayer = 5.3 x1010 cm-2  ~ 106 cm2/V•s GaAs GaAs 180Å 99Å 180Å

Bilayer QHE Phase Diagram __ d l Tunneling Murphy et al., 1994

Temperature Dependence in Zero Field Deviation from quadratic behavior -- no phonon peak

Above Tc, Pairing Fluctuations Kim, Nayak, Demler & Das Sarma 2000 Bonesteel, McDonald, Above Tc, Pairing Fluctuations Ussishkin & Stern, 1998

Summary the drag resistivity at ntotal = 1. We have discovered an enhancement in the drag resistivity at ntotal = 1. This enhancement appears well above the bilayer QHE phase boundary. This enhancement persists when the layer densities are unbalanced.