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 Physics at Virginia

image caption: From the left, first column: (upper figure) Cut plane view of electron bonding charge densities of an iron-phosphorus compound obtained from ab initio calculations, and (lower figure) scanning electron micrograph of fracture surface of ductile amorphous steel showing network of plastic deformation zones. Second column: Pole figures of a (002) MnAl thin film deposited on a MgO substrate. Third column: (upper) The magnetic strip domain structure of MnAl thin film revealed by Magnetic Force Microscopy image. (Lower) The detailed magnetic parallel strip domains showing the width is ~10 nm. Fourth column: Color contour map of the strongly anisotropic spin resonance neutron scattering intensity in the momentum space obtained from superconducting FeTe0.5Se0.5 whose crystal structure is shown in the inset.
   
 

Experimental Condensed Matter Physics

Condensed matter physics explores nature in its liquid and solid forms and addresses questions on the emergent interactions of electrons and atoms. At UVA, the experimental condensed matter physicists address problems relating to advanced quantum materials, including topological insulators and semimetals, superconductivity, extreme magnetoresistive oxides and semimetals, amorphous alloys, hybrid perovskites for batteries and skyrmions, to name a few.

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Selected Publications in Experimental Condensed Matter Physics at UVa > < Hide Publication List
  1. "Universal magnetic structure of the half-magnetization phase in Cr- based spinels", M. Matsuda, K. Ohoyama, S. Yoshii, H. Nojiri, P. Frings, F. Duc, B. Vignolle, G. L. J. A. Rikken, L. P. Regnault, S.-H. Lee, H. Ueda, Y. Ueda, Phys. Rev. Lett. 104, 047201 (2010).
  2. "Superconductivity in transition metal doped MoB4", J. W. Simonson, D. Wu, S. J. Poon, and S. A. Wolf, J. Superconductivity and Novel Magnetism 23, 1557 (2010).
  3. "Compressive plasticity and toughness of a Ti-based bulk metallic glass", X. J. Gu, S. J. Poon, G. J. Shiflet, and J. J. Lewandowski, Acta Materialia 58, 1708 (2010).
  4. "Relaxation dynamics of the metal-semiconductor transition in VO2 thin films", J. H. Claassen, J. W. Lu, K. G. West, S. A. Wolf, Appl. Phys. Lett. 96, 132102 (2010).
  5. "Transport phase diagram for superconducting thin films of tantalum with homogeneous disorder", Y. Z. Li, C. L. Vicente, J. Yoon, Phys. Rev. B 81, 020505 (2010).
  6. "Study of SF6 adsorption on graphite using infrared spectroscopy", P. Thomas, Y. Xia, D. A. Boyd, T. A. Hopkins, G. B. Hess, J. Chem. Phys. 131 (12), 124709 (2009).
  7. "Spin-lattice order in frustrated ZnCr2O4", S. Ji, S.-H. Lee, C. Broholm, T. Y. Koo, W. Ratcliff, S-W. Cheong, P. Zschack, Phys. Rev. Lett. 103, 037201 (2009).
  8. "Magnetic field-induced phase transitions in a weakly coupled s = 1/2 quantum spin dimer system Ba3Cr2O8", M. Kofu, H. Ueda, H. Nojiri, Y. Oshima, T. Zenmoto, K. C. Rule, S. Gerischer, B. Lake, C. D. Bastista, Y. Ueda, S.-H. Lee, Phys. Rev. Lett. 102, 177204 (2009).
  9. "Hidden quantum gap state in the static stripe phase of La2-xSrxCuO4", M. Kofu, S.-H. Lee, M. Fujita, H.-J. Kang, H. Eisaki, K. Yamada, Phys. Rev. Lett. 102, 047001 (2009).
  10. "Weakly coupled s = 1/2 quantum spin singlets in Ba3Cr2O8", M. Kofu, J.-H. Kim, S. Ji, S.-H. Lee, H. Ueda, Y. Qiu, H. J. Kang, M. Green, Y. Ueda, Phys. Rev. Lett. 102, 037206 (2009).
  11. "Formation of local electric dipoles with no unique polar axis in Tb3Fe5O12", Despina Louca, K. Kamazawa, T. Proffen, Phys. Rev. B 80, 214406 (2009).
  12. "High Capacity Hydrogen Absorption in Transition Metal Ethylene Complexes: consequences of nanoclustering", A. B. Phillips and B. S.Shivaram, Nanotechnology 20, 204020 (2009).
  13. "Colloquium: Electron-lattice interaction and its impact on high Tc superconductivity, V. Z. Kresin and S. A. Wolf, Rev. Mod. Phys. 81, 481 (2009).
  14. "Properties of vanadium and tantalum granular oxide-metal tunnel junction fabricated by electrochemical anodization", W. Fan, D. Kirkwood, J. Lu, S. A. Wolf, Appl. Phys. Lett. 95, 232110 (2009).
  15. "Multiple-Trap Correlations in the Room-Temperature Random Telegraph Signal of a Carbon Nanotube Field-Effect Transistor". Tsz Wah (Jack) Chan , Brian Burke , Kenneth Evans , Keith Williams, Smitha Vasudevan, Mingguo Liu , Joe Campbell , Avik Ghosh, Phys. Rev. B 80, 033402 (2009).
  16. "Infrared spectroscopic study of C2F6 monolayers and bilayers on graphite", T. A. Hopkins, D.A. Boyd, Y. Xia, G. M. Shifflett, F. M. Hess, and G. B. Hess, J. Chem. Phys. 128 (15), 154714 (2008).
  17. "External magnetic field effects on a distorted kagome antiferromagnet", J.-H. Kim, S. Ji, S.-H. Lee, B. Lake, T. Yildirim, H. Nojiri, K. Habicht, Y. Qiu, K. Kiefer, Phys. Rev. Lett. 101, 107201 (2008).
  18. "Field-induced antiferromagnetism and competition in the metamagnetic state of terbium gallium garnet", K. Kamazawa, Despina Louca, R. Morinaga, T. J. Sato, Q. Huang, J. R. D. Copley, Y. Qiu, Phys. Rev. B 78, 064412 (2008).
  19. "(Zr,Hf)Co(Sb,Sn) half-Heusler phases as high-temperature (>700 oC) p-type thermoelectric materials", S. R. Culp, S, J, Poon, V. Ponnambalam, J. Edwards, and T. M. Tritt, Appl. Phys. Lett. 93, 022105 (2008).
  20. "Poisson's ratio and intrinsic plasticity in metallic glasses", S. J. Poon, A. W. Zhu, and G. J. Shiflet, Appl. Phys. Lett. 92, 261902 (2008).
  21. "High Capacity Hydrogen Absorption in Transition Metal Ethylene Complexes Observed via Nanogravimetry", A. B. Phillips and B. S.Shivaram, Phys. Rev. Lett. 100, 105505 (2008).
  22. "Very large anisotropy in the dc conductivity of epitaxial VO2 thin films grown on (011) rutile TiO2", J. W. Lu, K. G. West, S. A. Wolf, Appl. Phys. Lett. 93, 262107 (2008).
  23. "Deep-UV Pattern generation in PMMA", Brian G Burke, Timothy J Herlihy Jr, Andrew B Spisak and Keith A Williams, Nanotechnology 19, 215301 (2008).
  24. "Quantum spin liquid states in the two dimensional kagome antiferromagnets, ZnxCu4-x(OD)6Cl2", S.-H. Lee, H. Kikuchi, Y. Qiu, B. Lake, Q. Huang, K. Habicht, K. Kiefer, Nature Materials 6, 853 (2007).
  25. "Spin-lattice instability to a fractional magnetization state in the spinel HgCr2O4", M. Matsuda, H. Ueda, A. Kikkawa, Y. Tanaka, K. Katsumata, Y. Narumi, T. Inami, Y. Ueda, S.-H. Lee, Nature Physics 3, 397 (2007).
  26. "Characterization of Nanostructures During Growth Using a Quartz Monitor", A.B. Phillips and B.S. Shivaram, Appl. Phys. Lett. 91, 153109 (2007).
  27. "Spin Incommensurability and Two Phase Competition in Cobaltites", D. Phelan, Despina Louca et al., Phys. Rev. Lett. 97, 235501 (2006).
  28. "Nano-magnetic droplets and implications to orbital ordering in La1-xSrxCoO3", D. Phelan, Despina Louca et al., Phys. Rev. Lett. 96, 027201 (2006).
  29. "Origin of nonlinear transport across the magnetically induced superconductor-metal-insulator transition in two dimensions", Y. Seo, Y. Qin, C. L. Vicente, K. S. Choi, J. Yoon, Phys. Rev. Lett. 97, 057005 (2006).
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Condensed Matter Physics Talks:
  Utpal Chatterjee   Chatterjee: My research is focused on a branch of physics, commonly known as condensed matter physics, which is essentially the study of physical properties of matter in their liquid or solid state employing the principles of quantum as well as statistical mechanics. My research interest lies in the experimental investigations of various solid state systems which exhibit novel electronic and magnetic properties, such as cuprate high temperature superconductors, colossal magneto resistive manganites, different transition metal dichalcogenides hosting charge density wave (CDW) as well as metal ... More>
  Patrick Edward Hopkins   Hopkins: Patrick is a Professor in the Department of Mechanical and Aerospace Engineering at the University of Virginia, with courtesy appointments in the Department of Materials Science and Engineering and the Department of Physics, and the ExSiTE Lab.  The ExSiTE lab's research interests are in energy transport and coupled photonic interactions with condensed matter, soft materials, liquids, vapors, plasmas and their interfaces.  We use various optical thermometry-based experiments to measure the thermal conductivity, thermal boundary conductance, thermal accommodation, ... More>
  Seung-Hun Lee   Lee: My research focuses on strongly correlated materials such as non-conventional high temperature superconductors, quantum magnets, frustrated spin systems, magnetic molecules, and multiferroics. The main experimental techniques that the group uses are elastic and inelastic neutron scattering with which one can directly probe the many body response function. Neutron scattering experiments are performed at several domestic and international facilities. My group also has the in-house capability of growing high quality single crystals of transition metal oxides using a state-of-the-art ... More>
  Despina Louca   Louca: Professor Louca studies phase transitions in condensed matter systems. Louca is interested in understanding how the underlying interactions involving the spin, charge and lattice degrees of freedom lead to emergent behaviors and properties such as polaron formation, Jahn-Teller type distortions, spin and charge density waves, superconductivity and quantum spin liquid states. The most recent systems of interest include topological insulators and semimetals, spintronic antiferromagnets of the I-Mn-V class, transition metal dichalcogenides, disorder ... More>
  Joseph Poon   Poon: My research group currently focuses on three projects: (i) Experimental and computational study of thermoelectric properties of narrow-gap semiconductors and semimetals. The narrow-bandgap semiconductors studied are often in the proximity of topological semimetals that show unusual thermo-magnetic and electrical transport properties. (ii) Synthesis of thin films and computational study of ferrimagnetic and antiferromagnetic heterostructures that show skyrmionic state and anomalous Hall effect. The unique magnetic spin texture and fast dynamics are ideal for low-power and ultrafast ... More>
  Bellave S. Shivaram   Shivaram: Professor Shivaram is a condensed matter experimentalist whose research spans a wide variety of key areas. His scientific career started with  work on the quantum fluid, liquid 3He, a strongly correlated Fermi system, focusing on its acoustic properties in the superfluid state. He has stayed with the theme of strongly correlated Fermi systems investigating their superconducting and magnetic properties at very low temperatures and high magnetic fields.  A significant portion of his work has focused on the thermodynamic, electromagnetic and acoustic properties of ... More>
  Jongsoo Yoon   Yoon: My research is focused on understanding of phases and phase transitions in two dimensional (2D) electronic systems such as thin superconductor or metal films and semiconductor heterostructure or quantum well. At sufficiently low temperatures and high magnetic fields, these 2D systems exhibit many interesting quantum phenomena including integer and fractional quantum Hall effect, quantum phase transitions, and electron crystallization. However, many aspects of these phenomena are poorly understood. More>

 

 

 
 
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