New Phase of 3 He? Jeevak M. Parpia, Cornell University, DMR 1202991 Disorder introduced via Aerogel – an extremely dilute glass – disturbs pairing of.

Slides:

Advertisements

Similar presentations

Chapter 13 Transmission Lines

Advertisements

FRACTIONAL DISTILLATION ORG I LAB Dr. W. J. KELLY.

Figure 19: Plot and frequency analysis for modifications to Skogestad’s settings for G 1 (s). (setpoint step = 1, disturbance step = 1)

From Principles of Electronic Materials and Devices, Third Edition, S.O. Kasap (© McGraw-Hill, 2005) These PowerPoint color diagrams can only be used by.

Quantum liquids in Nanoporous Media and on Surfaces Henry R. Glyde Department of Physics & Astronomy University of Delaware National Nanotechnology Initiative.

Alloy Formation at the Co-Al Interface for Thin Co Films Deposited on Al(001) and Al(110) Surfaces at Room Temperature* N.R. Shivaparan, M.A. Teter, and.

Mechanics of Materials II

And Oscillations. Objectives Oscillations Typical example - a simple pendulum (a mass attached to a vertical string). When the mass is displaced to one.

1 Material Electromagnetic Property Material partition under electric field Material partition under magnetic field Lorentzian model Artificial material.

Reduced Lasing Threshold of Semiconducting Polymers via Alignment in Mesoporous Silica (DMR ) Semiconducting polymers are under intense investigation.

Aqueous Corrosion Data Corrosion performed with ~1cm 3 samples in 100mL of DI water, 1mM NH 4 OH, or 1mM HCl The lowest dissolution rates occur at neutral.

Reaction Times for Males Vs Females. Data The data comes from the Australian census at school website and as such would be expected to be a representative.

Heat Transport by Liquid Helium through Aerogel James A. Sauls, Northwestern University, DMR Silica Aerogel is very low density glass (SiO 2 )

Analysis of Disturbance P M V Subbarao Associate Professor Mechanical Engineering Department I I T Delhi Modeling of A Quasi-static Process in A Medium.

Nanosegregation, microtexture and the control of brittle failure David B. Williams and Masashi Watanabe, Lehigh University, DMR Fig. 1 (left) A.

Multiscale Simulation of Phase Change Memory (PCM) Manjeri P. Anantram, University of Washington, DMR O Ba Sr Si To probe the ultimate scalability.

Proliferation cluster (G12) Figure S1 A The proliferation cluster is a stable one. A dendrogram depicting results of cluster analysis of all varying genes.

3 He NMR in Aerogel Yu. Bunkov H. Godfrin E. Collin A.S. Chen D. Cousins R. Harakaly S. Triqueneaux J. Sauls J. Parpia W. Halperin Yu. Mukharskiy V. Dmitriev.

Nature of Pure and Dirty Liquid 3 He - Fundamental Investigations and Educational Activities Yoonseok Lee (University of Florida) DMR The effect.

Broken symmetries in bulk condensed matter systems have implications for the spectrum of Fermionic excitations bound to surfaces and topological defects.The.

Type I and Type II superconductivity

For polymer films that are prone to rupture, it has been long observed that by increasing the molecular weight (Mw) of the polymer much above ~100 kg/mol.

Cooling mirrors with light Jack Harris, Yale University, PHY We have realized a new type of optomechanical coupling which allows us to greatly.

Electrical and optical properties of organic materials are closely related to its molecular orientation. SE is employed in the understanding of molecular.

Collaborative Research: Analysis of Defects and Their Causes in Bulk Aluminum Nitride Crystals – Jharna Chaudhuri, Texas Tech University, Lubbock, TX DMR

Normal Fluid Behavior and Superfluid Density of 3 He in axially compressed aerogel Cornell Robert Bennett, Nik Zhelev and Andrew Fefferman Royal Holloway:

Rotating Superfluid 3 He in Aerogel Takao Mizusaki Department of Physics, Graduate School of Science, Kyoto University Collaborators: Kyoto University,

Tunable Aerogel Waveplates Yoonseok Lee, University of Florida, DMR Understanding the effect of anisotropic disorder on the superfluid phases of.

National Science Foundation Mechanical Forces That Change Chemistry Brian W. Sheldon, Brown University, DMR Outcome: Research at Brown University.

Spin Dynamics of Superfluid 3 He in Aerogel Osamu Ishikawa Osaka City University.

Laser cooling of a diatomic molecule David P. DeMille, Yale University, DMR It has been roughly three decades since laser cooling techniques produced.

Competing Orders, Quantum Criticality, Pseudogap & Magnetic Field-Induced Quantum Fluctuations in Cuprate Superconductors Nai-Chang Yeh, California Institute.

Low Field Nuclear Magnetic Resonance High Field (Resolution) NMR: 7.5 T < B < 37 T Study of chemical structures, reactions (only solution) Low Field (Resolution)

Spin Precession Animation “DEMO”

Chapter 5 - PBL MT 454 Material Based on Chapter 5 The Planetary Boundary Layer.

Theory of induced superconductivity in graphene

D’Alembert’s Solution

K.M.Shahabasyan, M. K. Shahabasyan,D.M.Sedrakyan

Nuclear magnetic resonance study of organic metals Russell W. Giannetta, University of Illinois at Urbana-Champaign, DMR Our lab uses nuclear magnetic.

Atomic Physics Quantum Physics 2002 Recommended Reading: Harris Chapter 7.

Angles continued Interior Angles are those angles inside the parallel lines. Exterior Angles are those angles outside the parallel lines.

Conclusion QDs embedded in micropillars are fabricated by MOCVD and FIB post milling processes with the final quality factor about Coupling of single.

Thermodynamics and Transport in Iron-based superconductors Maxim G. Vavilov, University of Wisconsin-Madison, DMR Recent discovery of novel iron-pnictide.

Flow of 3 He in 640 nm thick slabs Jeevak M. Parpia, Cornell University, DMR Background frequency (empty cell) blue triangles, frequency when the.

Presentation Overview

Dynamics in Earth’s Atmosphere

A Pressure-Induced Emergence of a Weyl Semimetal Phase in Pb1-xSnxTe J

Fig. 5: Energy diagram of the PBHM-plasmonic coupled system.

Electric Charge and Electric Field

9 Graphs and Graphing.

Active Figure 18.4 The superposition of two identical waves y1 and y2 (blue and green) to yield a resultant wave (red). (a) When y1 and y2 are in phase,

Dynamics in Earth’s Atmosphere

Dielectrics 11/10/08.

High pressure, high temperature conditions

all Cooper pairs must behave in the same way

Volume 112, Issue 5, Pages (March 2017)

Volume 100, Issue 6, Pages (March 2011)

Volume 101, Issue 1, Pages (July 2011)

Ab Initio Structure Determination from Electron Microscopic Images of Single Molecules Coexisting in Different Functional States Dominika Elmlund, Ralph.

Tracking Phospholipid Populations in Polymorphism by Sideband Analyses of 31P Magic Angle Spinning NMR Liam Moran, Nathan Janes Biophysical Journal

Membrane Elasticity in Giant Vesicles with Fluid Phase Coexistence

T.M. Okonogi, H.M. McConnell Biophysical Journal

Structural differences between mesophilic, moderately thermophilic and extremely thermophilic protein subunits: results of a comprehensive survey András.

Ankit Gupta, Benjamin Hepp, Mustafa Khammash Cell Systems

Jayna B. Jones, Cyrus R. Safinya Biophysical Journal

Fig. 2 Materials and designs for bioresorbable PC microcavity-based pressure and temperature sensors. Materials and designs for bioresorbable PC microcavity-based.

Phase Equilibria in DOPC/DPPC-d62/Cholesterol Mixtures

Volume 9, Issue 2, Pages (February 2001)

Optical Excited States in a Moiré Crystal

Presentation transcript:

New Phase of 3 He? Jeevak M. Parpia, Cornell University, DMR Disorder introduced via Aerogel – an extremely dilute glass – disturbs pairing of 3 He. Aerogel, when properly grown, should be highly homogenous. Theoretical results point to anisotropy as the means to promote the chiral A phase over the B phase. We demonstrated that an ESP (Equal Spin Paired) phase is introduced between the B phase and the normal phase (compare blue diamonds to red boxes in the upper figure). However, the superfluid fraction is inconsistent with the angular momentum aligned along the compression direction. Instead, an oriented polar phase with a line of nodes around the equator is the likely alternate explanation. The dissipation (shown at right) would be larger in the Polar (ESP) than the B phase, while the superfluid fraction would be reduced from that in the B phase.

Modification of Phase Diagram by Confinement Jeevak M. Parpia, Cornell University, DMR Using a microfabricated cavity formed by joining silicon to glass (see figure D), the superfluidity of confined 3 He was investigated. We found that the A phase (confined to the high pressure high temperature corner of the bulk phase diagram (C)), now appears at low pressure in both diffuse (A) and specular (B) versions of the phase diagram. (specularity is induced by covering surfaces with 4 He superfluid). A small coexistence region with both A&B phase signatures is seen in the NMR frequency shift (Figs E,F below right). This coexistence is likely due to small in homogeneities in the cell. The cell bows slightly under pressure (see G – where we plot the distribution in %/nm vs cell height D 34/841.full.html D F E G

Broader Impacts Jeevak M. Parpia, Cornell University, DMR Organized Symposium at March Meeting Baltimore MD Panelist and Presenter at Conferences for Undergraduate Women in Physics (CUWiP) at Cornell, January Supervising Undergraduate research student Bryce Kobrin at Cornell (work on resonant characteristics of quartz forks). 4. Supervised Patrick Yu (2012) (see figure at left) Patrick worked on making composite Graphene- Silicon Nitride resonators. 5. International advisory board for QFS 2013 (Matsue- Japan) and QFS 2015 (Buffalo NY). 6. Suggested 2 invited symposia for 2014 March meeting. Patrick Yu: High school student – currently at Caltech, worked with us to fabricate Graphene-Silicon Nitride resonators at the CNF. Here shown examining a mask that he fabricated.