Fernandes, Rafael M., VanBebber, Lindsay H., Bhattacharya, Shobo, Chandra, Premala, Keppens, Veerle, Mandrus, David, ...
We demonstrate that the softening in the elastic properties, as seen in our resonant ultrasound spectroscopy data of the FeAs systems can be naturally understood in terms of fluctuations of emerging...
Graphene: Relativistic transport in a nearly perfect quantum liquid (2009)
Mueller, Markus, Fritz, Lars, Sachdev, Subir, Schmalian, Joerg
Electrons and holes in clean, charge-neutral graphene behave like a strongly coupled relativistic liquid. The thermo-electric transport properties of the interacting Dirac quasiparticles are rather...
Liu, Chang, Kondo, Takeshi, Fernandes, Rafael M., Palczewski, Ari D., Mun, Eun Deok, Ni, Ni, ...
The phase diagram of a correlated material is the result of a complex interplay between several degrees of freedom, providing a map of the material's behavior. One can understand (and ultimately...
Why is the optical transparency of graphene determined by the fine structure constant? (2009)
Sheehy, Daniel E., Schmalian, Joerg
The observed 97.7% optical transparency of graphene has been linked to the value 1/137 of the fine structure constant, by using results for noninteracting Dirac fermions. The agreement in three...
Orbital coupling and superconductivity in the iron pnictides (2009)
Zhang, Junhua, Sknepnek, Rastko, Fernandes, Rafael M., Schmalian, Joerg
We demonstrate that strong inter-orbital interaction is very efficient to achieve superconductivity due to magnetic fluctuations in the iron pnictides. Fermi surface states that are coupled by the...
Graphene - a nearly perfect fluid (2009)
Mueller, Markus, Schmalian, Joerg, Fritz, Lars
Hydrodynamics and collision dominated transport are crucial to understand the slow dynamics of many correlated quantum liquids. The ratio \eta/s of the shear viscosity \eta to the entropy density s...
Kondo, Takeshi, Khasanov, Rustem, Takeuchi, Tsunehiro, Schmalian, Joerg, Kaminski, Adam
A pairing gap and coherence are the two hallmarks of superconductivity. In a classical BCS superconductor they are established simultaneously at Tc. In the cuprates, however, an energy gap...
Relativistic magnetotransport in graphene (2008)
Mueller, Markus, Fritz, Lars, Sachdev, Subir, Schmalian, Joerg
We study the thermal and electric transport of a fluid of interacting Dirac fermions as they arise in single-layer graphene. We include Coulomb interactions, a dilute density of charged impurities...
Replica theory for fluctuations of the activation barriers in glassy systems (2008)
Dzero, Maxim, Schmalian, Joerg, Wolynes, Peter G.
We consider the problem of slow activation dynamics in glassy systems undergoing a random first order phase transition. Using an effective potential approach to supercooled liquids, we determine the...
Anisotropic pairing in the iron pnictides (2008)
Sknepnek, Rastko, Samolyuk, German, Lee, Yong-bin, Schmalian, Joerg
We determine the anisotropy of the spin fluctuation induced pairing gap on the Fermi surface of the FeAs based superconductors as function of the exchange and Hund's coupling $J_{H}$. We find that...
Quantum critical transport in clean graphene (2008)
Fritz, Lars, Schmalian, Joerg, Mueller, Markus, Sachdev, Subir
We describe electrical transport in ideal single-layer graphene at zero applied bias. There is a crossover from collisionless transport at frequencies larger than k_B T/hbar (T is the temperature) to...
Universality of liquid-gas Mott transitions at finite temperatures (2007)
Papanikolaou, Stefanos, Fernandes, Rafael Monteiro, Fradkin, Eduardo, Phillips, Philip W., Schmalian, Joerg, Sknepnek, Rastko
We explain in a consistent manner the set of seemingly conflicting experiments on the finite temperature Mott critical point, and demonstrate that the Mott transition is in the Ising universality...
Quantum critical scaling in graphene (2007)
Sheehy, Daniel E., Schmalian, Joerg
We show that the emergent relativistic symmetry of electrons in graphene near its quantum critical point (QCP) implies a crucial importance of the Coulomb interaction. We derive scaling laws, valid...
Kondo-lattice screening in a d-wave superconductor (2007)
Sheehy, Daniel E., Schmalian, Joerg
We show that local moment screening in a Kondo lattice with d-wave superconducting conduction electrons is qualitatively different from the corresponding single Kondo impurity case. Despite the...
Quantum phases in a doped Mott insulator on the Shastry-Sutherland lattice (2007)
Liu, Jun, Trivedi, Nandini, Lee, Yongbin, Harmon, B. N., Schmalian, Joerg
We propose the projected BCS wave function as the ground state for the doped Mott insulator SrCu2(BO3)2 on the Shastry-Sutherland lattice. At half filling this wave function yields the exact ground...
Percolation quantum phase transitions in diluted magnets (2005)
Vojta, Thomas, Schmalian, Joerg
We show that the interplay of geometric criticality and quantum fluctuations leads to a novel universality class for the percolation quantum phase transition in diluted magnets. All critical...
Strong coupling superconductivity due to massless boson exchange (2005)
Chubukov, Andrey V., Schmalian, Joerg
We solve the problem of fermionic pairing mediated by a massless boson in the limit of large coupling constant. At weak coupling, the transition temperature is exponentially small and...
The Shapes of Cooperatively Rearranging Regions in Glass Forming Liquids (2005)
Stevenson, Jacob D., Schmalian, Joerg, Wolynes, Peter G.
The shapes of cooperatively rearranging regions in glassy liquids change from being compact at low temperatures to fractal or ``stringy'' as the dynamical crossover temperature from activated to...
Activated events in glasses: the structure of entropic droplets (2005)
Dzero, Maxim, Schmalian, Joerg, Wolynes, Peter G.
Using an effective potential approach, we present a replica instanton theory for the dynamics of entropic droplets in glassy systems. Replica symmetry breaking in the droplet interface leads to a...
Correlated disorder in random block-copolymers (2005)
Westfahl Jr., Harry, Schmalian, Joerg
We study the effect of a random Flory-Huggins parameter in a symmetric diblock copolymer melt which is expected to occur in a copolymer where one block is near its structural glass transition. In the...
Liu, Jun, Schmalian, Joerg, Trivedi, Nandini
We introduce and analyze a variational wave function for quasi two-dimensional kappa-ET organic salts containing strong local and nonlocal correlation effects. We find an unconventional...
Superconductivity in charge Kondo systems (2004)
Dzero, Maxim, Schmalian, Joerg
We present a theory of superconductivity in charge Kondo systems, materials with resonant quantum valence fluctuations, in the regime where the transition temperature is comparable to the charge...
Quantum Griffiths effects in itinerant Heisenberg magnets (2004)
Vojta, Thomas, Schmalian, Joerg
We study the influence of quenched disorder on quantum phase transitions in itinerant magnets with Heisenberg spin symmetry, paying particular attention to rare disorder fluctuations. In contrast to...
Quantum phase transitions of magnetic rotons (2003)
Schmalian, Joerg, Turlakov, Misha
Due to weak spin-orbit coupling, the magnetic excitations of an itinerant ferromagnet become magnetic rotons, excitations with degenerate minima on a hypersphere at finite wavevector. Using...
Schmalian, Joerg, Wolynes, Peter G., Wu, Sangwook
We argue that the recent Monte Carlo calculations by Geissler and Reichman (cond-mat/0304254) are not conclusive in ruling out or supporting the self-generated glass transition of the Brazovskii...
Solution of the local field equations for self-generated glasses (2003)
Wu, Sangwook, Schmalian, Joerg, Kotliar, Gabriel, Wolynes, Peter G
We present a self-consistent local approach to self generated glassiness which is based on the concept of the dynamical mean field theory to many body systems. Using a replica approach to self...
Dynamical Mean Field Theory for Self-Generated Quantum Glasses (2002)
Westfahl Jr., Harry, Schmalian, Joerg, Wolynes, Peter G
We present a many body approach for non-equilibrium behavior and self-generated glassiness in strongly correlated quantum systems. It combines the dynamical mean field theory of equilibrium systems...
A Spin Fluctuation Model for D-wave Superconductivity (2002)
Chubukov, Andrey V., Pines, David, Schmalian, Joerg
In this review we demonstrate that superconducting pairing, mediated by the exchange of spin fluctuations, is a viable alternative to conventional phonon-mediated pairing. We discuss in detail the...
Theory of Microemulsion Glasses (2001)
Wu, Sangwook, Westfahl Jr., Harry, Schmalian, Joerg, Wolynes, Peter G.
We show that the tendency towards microphase separation in microemulsions leads to the formation of a glassy state after sufficiently strong correlations between polar and hydrophobic regions have...
Self generated randomness, defect wandering and viscous flow in stripe glasses (2001)
Westfahl Jr., Harry, Schmalian, Joerg, Wolynes, Peter G.
We show that the competition between interactions on different length scales, as relevant for the formation of stripes in doped Mott insulators, can cause a glass transition in a system with no...
Schmalian, Joerg, Wolynes, Peter G.
Using our previous results for the configurational entropy of a stripe glass as well as a variational result for the bare surface tension of entropic droplets we show that there is no disagreement...
On the Number of Metastable States in a Stripe Glass (2000)
Schmalian, Joerg, Westfahl JR., Harry, Wolynes, Peter G.
We estimate the number of metastable states of a self generated stripe glass, relevant for the formation of glassy doped Mott insulators. Using replica bound states, we demonstrate that the...
Stripe glasses: self generated randomness in a uniformly frustrated system (2000)
Schmalian, Joerg, Wolynes, Peter G.
We show that a system with competing interactions on different length scales, as relevant for the formation of stripes in doped Mott insulators, undergoes a self-generated glass transition which is...
Sheehy, Daniel E., Goldbart, Paul M., Schmalian, Joerg, Yazdani, Ali
Andreev interferometry - the sensitivity of the tunneling current to spatial variations in the local superconducting order at an interface - is proposed as a probe of the spatial structure of the...
Magnetic Roughness and Domain Correlations in Antiferromagnetically Coupled Multilayers (1999)
Langridge, Sean, Schmalian, Joerg, Marrows, C. H., Dekadjevi, D. T., Hickey, B. J.
The in-plane correlation lengths and magnetic disorder of magnetic domains in a transition metal multilayer have been studied using neutron scattering techniques. A new theoretical framework is...
Quantum critical point with competing propagating and diffusive spin excitations (1998)
Feedback effects due to spin fluctuation induced precursors in the fermionic quasiparticle spectrum are taken into account in the description of a quantum critical point of itinerant spin systems. A...
Pairing due to Spin Fluctuations in Layered Organic Superconductors (1998)
I show that for a \kappa-type organic (BEDT-TTF)_2-X molecular crystal, a superconducting state with T_c ~ 10 K and gap nodes on the Fermi surface can be caused by short-ranged antiferromagnetic spin...
Schmalian, Joerg, Pines, David, Stojkovic, Branko
We derive in detail a novel solution of the spin fermion model which is valid in the quasi-static limit pi T
Probing the susceptibility $\chi'(q)$ in cuprates using Ni impurities (1998)
Morr, Dirk K., Schmalian, Joerg, Stern, Raivo, Slichter, Charles P.
Recent NMR experiments on $YBa_2(Cu_{1-x}Ni_x)_3O_{6+\delta}$ (Bobroff et al. Phys. Rev. Lett. 79, 2117 (1997)) have shown that Ni impurities provide an important probe for the momentum dependence of...
Temperature variation of the pseudogap in underdoped cuprates (1997)
Chubukov, {Andrey V., Schmalian, Joerg
We consider thermal evolution of the spectral function A(Omega, T) in underdoped cuprates at T >Tc. We find that in the strong coupling limit, the fermionic Green's function near (0,\pi) behaves as...
Morr, Dirk. K., Schmalian, Joerg, Stern, Raivo, Slichter, Charles P.
In a recent letter (PRL 79, 2117 (1997)), Bobroff et al. presented novel $^{17}$O NMR measurements for YBa_2(Cu_{1-x}Ni_x)_3O_{6+y} which offer a new probe of the momentum dependence of the static...
Weak Pseudogap Behavior in the Underdoped Cuprate Superconductors (1997)
Schmalian, Joerg, Pines, David, Stojkovic, Branko
We report on an exact solution of the nearly antiferromagnetic Fermi liquid spin fermion model in the limit \pi T
Laughlin, R. B., Pines, David, Schmalian, Joerg, Stojković, Branko P., Wolynes, Peter
Mesoscopic organization in soft, hard, and biological matter is examined in the context of our present understanding of the principles responsible for emergent organized behavior (crystallinity,...
Laughlin, R. B., Pines, David, Schmalian, Joerg, Stojković, Branko P., Wolynes, Peter
Mesoscopic organization in soft, hard, and biological matter is examined in the context of our present understanding of the principles responsible for emergent organized behavior (crystallinity,...