Physics Department Personnel

Dr. Ziqiang Wang

Professor of Physics

617-552-0687
Higgins Hall 330F
wangzi@bc.edu

Education

• Ph.D., Columbia University, 1989
  

Areas of Research
Theory of novel electronic materials: localization, interaction, and metal-insulator transitions; quantum Hall effect; heavy fermion compounds; high temperature superconductors; quantum magnetism and electronic transport in high magnetic fields.

Selected Publications

• “Electron Correlation and Fermi Surface Topology in Na_xCoO₂," Physical Review Letters, 94, 206401 (2005).
• “Edge-Current in Time-Reversal Symmetry Breaking Superconductors," Physical Review Letters, 95, 017004 (2005).
• “Vortices, Instantons and Deconfinement in Bilayer Quantum Hall Exciton Superfluid," Physical Review Letters, 94, 176804 (2005).
• "Tunneling, Dissipation, and Superfluid Transition in Quantum Hall Bilayers," Physical Review Letters, vol. 92, p. 136803 (2004).
• “ARPES on Na_0.6CoO₂: Fermi Surface and Unusual Band Dispersion,” Physical Review Letters, vol. 92, p. 246403 (2004).
• “Fermi Surface Topology of Ca_1.5Sr_0.5RuO₄ Determined by ARPES,” Physical Review Letters, 93, p. 177007, (2004).
• “Quasiparticle Line Shape of Sr₂RuO₄ and Its Relation to Anisotropic Transport,” Physical Review Letters, vol. 92, p. 137002 (2004).
• “Pseudogap, Competing order, and the Coexistence of Staggered Flux and d-Wave Pairing in High-Temperature Superconductors,” Physical Review B, vol. 70, p. 020501(R) (2004).
• "Phase Diagram for Quantum Hall Bilayers at nu=1", Physical Review Letters, vol. 91, p. 116802 (2003).
• "Spectral Properties of a Quantum Impurity in d-Wave Superconductors," Physical Review B, vol. 67, p. 180507 (2003)
• "Local Moment Formation in the Superconducting State of a Doped Mott Insulator'', Physical Review Letters, vol. 89, p. 217002 (2002).
• "Electron-Electron Interaction, Quantum Coulomb Gap, and Dynamical Scaling Near Integer Quantum Hall Transitions'', Physical Review B, vol. 65, p. 195316 (2002).
• "Role of Disorder in Half-Filled High Landau Levels," Physical Review B, Rapid Communications, vol. 66, p. 161103 (2002).
• "Inhomogeneous d-Wave Superconducting State of a Doped Mott Insulator'', Physical Review B, vol. 65, p. 064509 (2002).
• "Electron-Electron Interactions, Quantum Coulomb Gap, and Dynamical Scaling Near Integer Quantum Hall Transitions", cond-mat/0110299, (2001).
• "Role of Disorder in Half-Filled High Landau Levels", cond-mat/0112233, (2001).
• "Superconductivity Near Itinerant Ferromagnetic Quantum Criticality", Physical Review Letters, vol. 87, p. 257001, (2001).
• "Microscopic electronic inhomogeneity in high-T_c superconductor Bi2Sr2CaCu2O_{8+x}", Nature, vol. 413, p. 282 (2001).
• Inhomogeneous d-Wave Superconducting State of a Doped Mott Insulator," cond-mat/0107004, Physical Review B, in press, (2001).
• "Superconductivity Near Itinerant Ferromagnetic Quantum Criticality", Physical Review Letters, vol. 87, p. 257001, (2001).
• "On Analytic Structure of One-Dimensional Localization Theory: Re-Examining Mott's Law," Physical Review Letters, vol. 86, p. 4715 (2001).
• "Thermodynamic and Tunneling Density of States of the Integer Quantum Hall Critical State,'" Physical Review B, vol. 65, 041302(R) (2001).
• "Pseudogaps and Quantum Criticality in Underdoped Cuprates", Physica C, vol. 341, p. 207 (2000).
• "Short-Range Interactions and Scaling at Integer Quantum Hall Transitions," Physical Review B, vol. 61, p. 8326 (2000).
• "Quantum Disordered Slave Bosons Theory of Underdoped Cuprates,"Europhysics Letters, vol. 50, p. 656 (2000).
• "Bulk Tunneling near Integer Quantum Hall Transitions,'' Physical Review Letters 83, 828 (1999).
• "Compressibility of the Two-Dimensional Infinite-U Hubbard Model'', Physical Review Letters 83, 2046 (1999).
• "In-Plane Magnetic Field Effect on the Transport Properties in Quasi-3D Quantum Hall Structures'' Physical Review B 60, 8743 (1999).
• "Instabilities Toward Charge Density Wave and Paired Quantum Hall State of Half-Filled Landau Levels", cond-mat/9911265, (1999).
• "Conductance Correlations Near Quantum Hall Transitions'' Physical Review Letters 81, 2767 (1998).
• "Quantization and Chiral Edge State Properties in Nearly 3D Quantum Hall Structures," Physica B, 258, 279 (1998).
• "Nonabelian Chiral Anomaly in the Integer Quantum Hall Effect," Physical Review Letters 81, 1747 (1998).
• "Conductance, Conductance Fluctuations, and Level Statistics on the Surface of Multilayer Quantum Hall States," Physical Review B, 58, 1967 (1998).
• "Localization and Metal-Insulator Transition in Multilayer Quantum Hall Structures," Physical Review Letters 79, 4002 (1997).
• "Weakly Coupled Antiferromagnetic Quantum Spin Chains,'' Physical Review Letters 78 126 (1997).
• "Critical Conductance and Its Fluctuations at Integer Quantum Hall Plateau Transitions,'' Physical Review Letters, 77 , 4426 (1996).
• "The Effects of Electron-Electron Interactions on the Integer Quantum Hall Transitions'', Physical Review Letters, 76 , 4014 (1996).
• "Transitions Between Hall Plateaus and the Dimerization Transition of a Hubbard Chain'', Philosophical Magazine Letters 73 , 145 (1996).
• "Phase Transitions in the Symmetric Kondo Lattice Model in Two and Three Dimensions'', Physical Review B, 51 , R15630 (1995).
• "Scaling theory of the Hall Coefficient Near the Metal-Insulator Transition: A Renormalization Group Approach'', Nuclear Physics , B[FS] 415 , 589 (1994). Physica B, 199&200, 463 (1994).
• "Transitions Between Hall Plateaus in the Presence of Strong Landau Level Mixing," Physical Review Letters, 72 , 2454 (1994).
• "Spin Triplet Solitons in the One-Dimensional Symmetric Kondo Lattice." Physical Review B 47 , 11935 (1993).
• "Quantum Percolation and the Plateau Transitions in the Quantum Hall Effect'', Physical Review Letters 70 , 4130 (1993).
• "Collective Excitations, Photoemission Spectra and Optical Gaps in Strongly Correlated Fermi Systems'', Physical Review Letters 69 , 2009 (1992).
• "Strongly Correlated Fermi Liquid and the Unbroken Symmetry Phase of the High-TC Superconductors'', International Journal of Modern Physics B 6 , Nos. 5 & 6, 603 (1992).
• "Critical Behavior of the Hall Coefficient Near the Mobility Edge'', Physical Review Letters 68, 2504 (1992).
• "The Fermi Liquid Phase of the t-J Model and the Hall Coefficient in High-T_c Superconductors", Physical Review Letters 68 , 2078 (1992).
• "Collective Excitations and Spectral Function in the Fermi Liquid State of the t-J Model'', Physical Review Letters 67, 2733 (1991).
• "Pairing in Two Dimensions: A Systematic Approach'', Physical Review B 43 , 10229 (1991).