Nematic Fermi Fluids in Condensed Matter Physics (2009)
Fradkin, Eduardo, Kivelson, Steven A., Lawler, Michael J., Eisenstein, James P., Mackenzie, Andrew P.
Correlated electron fluids can exhibit a startling array of complex phases, among which one of the more surprising is the electron nematic, a translationally invariant metallic phase with a...
Sun, Kai, Lawler, Michael J., Kim, Eun-Ah
We study the interplay between charge and spin ordering in electronic liquid crystalline states with a particular emphasis on fluctuating spin stripe phenomena observed in recent neutron scattering...
Sørensen, Erik S., Lawler, Michael J., Kim, Yong Baek
Zn-Paratacamite is a rare spin 1/2 antiferromagnetic insulator with an ideal kagome lattice structure in part of its phase diagram. As a function of Zn doping, this material undergoes a structural...
Interference of nematic quantum critical quasiparticles: a route to the octet model (2008)
Kim, Eun-Ah, Lawler, Michael J.
Repeated observations of inhomogeneity in cuperate superconductors[1-5] make one immediately question the existance of coherent quasiparticles(qp's) and the applicability of a momentum space picture....
Puetter, Christoph M., Lawler, Michael J., Kee, Hae-Young
We present a theory of the anisotropy tuned quantum phase transition between spin nematic and spin-Peierls phases in S=1 systems with significant bi-quadratic exchange interactions. Based on quantum...
Sun, Kai, Fregoso, Benjamin M., Lawler, Michael J., Fradkin, Eduardo
We discuss the quantum phase transition between a quantum nematic metallic state to an electron metallic smectic state in terms of an order-parameter theory coupled to fermionic quasiparticles. Both...
Quantum order by disorder in frustrated diamond lattice antiferromagnets (2008)
Bernier, Jean-Sebastien, Lawler, Michael J., Kim, Yong Baek
We present a quantum theory of frustrated diamond lattice antiferromagnets. Considering quantum fluctuations as the predominant mechanism relieving spin frustration, we find a rich phase diagram...
Theory of N\'eel and Valence-Bond-Solid Phases on the Kagome Lattice of Zn-paratacamite (2007)
Lawler, Michael J., Fritz, Lars, Kim, Yong Baek, Sachdev, Subir
Recently, neutron scattering data on powder samples of Zn-paratacamite, Zn$_x$Cu$_{4-x}$(OH)$_6$Cl$_{2}$, with small Zn concentration has been interpreted as evidence for valence bond solid and...
Theory of the nodal nematic quantum phase transition in superconductors (2007)
Kim, Eun-Ah, Lawler, Michael J., Oreto, Paul, Sachdev, Subir, Fradkin, Eduardo, Kivelson, Steven A.
We study the character of an Ising nematic quantum phase transition (QPT) deep inside a d-wave superconducting state with nodal quasiparticles in a two-dimensional tetragonal crystal. We find that,...
Topological spin liquid on the hyper-kagome lattice of Na_4Ir_3O_8 (2007)
Lawler, Michael J., Kee, Hae-Young, Kim, Yong Baek, Vishwanath, Ashvin
Recent experiments on the "hyper-kagome" lattice system Na$_4$Ir$_3$O$_8$ have demonstrated that it is a rare example of a three dimensional spin-1/2 frustrated antiferromagnet. We investigate the...
`Local' Quantum Criticality at the Nematic Quantum Phase Transition (2006)
Lawler, Michael J., Fradkin, Eduardo
We discuss the finite temperature properties of the fermion correlation function near the fixed point theory of the nematic quantum critical point (QCP) of a metallic Fermi system. We show that...
Kim, Eun-Ah, Lawler, Michael J., Vishveshwara, Smitha, Fradkin, Eduardo
A central long standing prediction of the theory of fractional quantum Hall (FQH) states that it is a topological fluid whose elementary excitations are vortices with fractional charge and fractional...
Non-perturbative behavior of the quantum phase transition to a nematic Fermi fluid (2005)
Lawler, Michael J., Fernandez, Victoria, Barci, Daniel G., Fradkin, Eduardo, Oxman, Luis
We discuss shape (Pomeranchuk) instabilities of the Fermi surface of a two-dimensional Fermi system using bosonization. We consider in detail the quantum critical behavior of the transition of a two...
Quantum Hall Smectics, Sliding Symmetry and the Renormalization Group (2004)
Lawler, Michael J., Fradkin, Eduardo
In this paper we discuss the implication of the existence of a sliding symmetry, equivalent to the absence of a shear modulus, on the low-energy theory of the quantum hall smectic (QHS) state. We...
Thesis, PlanA (M.S.)--University of Wisconsin--Stout, 1994.
Determination of the digestibility of grassmeal and its energy value for pigs. (1959)
Thesis (M. Agr. Sc.)--University College Dublin, 1959.
Relationship differences between maltreated child-kin foster mother dyads and maltreated child-non-kin foster mother dyads were examined using Emotional Availability (EA) Scales. A sample of 106...