Concha, A., Stanev, V., Tesanovic, Z.
By analyzing the strength of a photon-fermion coupling using basic scattering processes we calculate the effect of a velocity anisotropy on the critical number of fermions at which mass is...
Spin Gap and Resonance at the Nesting Wavevector in Superconducting FeSe0.4Te0.6 (2009)
Qiu, Yiming, Bao, Wei, Zhao, Yang, Broholm, Collin, Stanev, V., Tesanovic, Z., ...
Neutron scattering is used to probe magnetic excitations in FeSe_{0.4}Te_{0.6} (T_c=14 K). Low energy spin fluctuations are found with a characteristic wave vector $(0.5,0.5,L)$ that corresponds to...
Chen, T. Y., Huang, S. X., Tesanovic, Z., Liu, R. H., Chen, X. H., Chien, C. L.
The superconducting gap in FeAs-based superconductor SmFeAs(O1-xFx) (x = 0.15 and 0.30) and the temperature dependence of the sample with x = 0.15 have been measured by Andreev reflection...
The BCS-like gap in superconductor SmFeAsO_0.85F_0.15 (2008)
Chen, T. Y., Tesanovic, Z., Liu, R. H., Chen, X. H., Chien, C. L.
Since the discovery of superconductivity in the cuprates two decades ago, it has been firmly established that the CuO_2 plane is consequential for high T_C superconductivity and a host of other very...
Rough edges in quantum transport of Dirac particles (2008)
We consider Dirac particles confined to a thin strip, e.g., graphene nanoribbon, with rough edges. The confinement is implemented by a large mass in the Hamiltonian or by imposing boundary conditions...
Charge modulation, spin response, and dual Hofstadter butterfly in high-Tc cuprates (2004)
The modulated density of states observed in recent STM experiments in underdoped cuprates is argued to be a manifestation of the charge density wave of Cooper pairs (CPCDW). CPCDW formation is due to...
Low-Temperature Specific Heat of an Extreme-Type-II Superconductor at High Magnetic Fields (2003)
Carr, A. L., Trafton, J. J., Dukan, S., Tesanovic, Z.
We present a detailed study of the quasiparticle contribution to the low-temperature specific heat of an extreme type-II superconductor at high magnetic fields. Within a T-matrix approximation for...
Interplay of disorder and magnetic field in the superconducting vortex state (2003)
Lages, J., Sacramento, P. D., Tesanovic, Z.
We calculate the density of states of an inhomogeneous superconductor in a magnetic field where the positions of vortices are distributed completely at random. We consider both the cases of s-wave...
Quasiparticle density of states of d-wave superconductors in a disordered vortex lattice (2003)
Lages, J., Sacramento, P. D., Tesanovic, Z.
We calculate the density of states of a disordered inhomogeneous d-wave superconductor in a magnetic field. The field-induced vortices are assumed to be pinned at random positions and the effects of...
Gauge invariant response functions in Algebraic Fermi liquids (2002)
Franz, M., Pereg-Barnea, T., Sheehy, D. E., Tesanovic, Z.
A new method is developed that permits the simple evaluation of two-loop response functions for fermions coupled to a gauge field. We employ this method to study the gauge-invariant response...
Gauge invariant fermion propagator in QED3 (2002)
Franz, M., Tesanovic, Z., Vafek, O.
In a recent preprint [cond-mat/0204040] Khveshchenko questioned the validity of our computation of the gauge invariant fermion propagator in QED3, which we employed as an effective theory of high-T_c...
Quasiparticle Thermal Conductivities in a Type-II Superconductor at High Magnetic Field (2002)
Dukan, S., Powell, T. P., Tesanovic, Z.
We present a calculation of the quasiparticle contribution to the longitudinal thermal conductivities as well as transverse (Hall) thermal conductivity of an extreme type-II superconductor in a high...
Franz, M., Tesanovic, Z., Vafek, O.
High-$T_c$ cuprates differ from conventional superconductors in three crucial aspects: the superconducting state descends from a strongly correlated Mott-Hubbard insulator, the order parameter...
Magnetic field induced charge and spin instabilities in cuprate superconductors (2002)
Franz, M., Sheehy, D. E., Tesanovic, Z.
A d-wave superconductor, subject to strong phase fluctuations, is known to suffer an antiferromagnetic instability closely related to the chiral symmetry breaking in (2+1)-dimensional quantum...
Relativity Restored: Dirac Anisotropy in QED$_3$ (2002)
Vafek, O., Tesanovic, Z., Franz, M.
We show that at long lengthscales and low energies and to leading order in 1/N expansion, the anisotropic QED in 2+1 dimensions renormalizes to an isotropic limit. Consequently, the (Euclidean)...
Tesanovic, Z., Vafek, O., Franz, M.
A d-wave superconductor, its phase coherence progressively destroyed by unbinding of vortex-antivortex pairs, suffers an instability related to chiral symmetry breaking in two-flavor QED$_3$. The...
Quasiparticle Hall Transport of d-wave Superconductors in Vortex State (2001)
Vafek, O., Melikyan, A., Tesanovic, Z.
We present a theory of quasiparticle Hall transport in strongly type-II superconductors within their vortex state. We establish the existence of integer quantum spin Hall effect in clean...
Within the phase fluctuation model for the pseudogap state of cuprate superconductors we identify a novel statistical "Berry phase" interaction between the nodal quasiparticles and fluctuating...
Flux tubes, visons, and vortices in spin-charge separated superconductors (2000)
The idea of spin-charge separation in cuprate superconductors has been recently energized by Senthil and Fisher who formulated a Z_2 gauge theory and, within its context, proposed a ``vison...
Quasiparticles and Vortices in Unconventional Superconductors (2000)
Vafek, O., Melikyan, A., Franz, M., Tesanovic, Z.
Quasiparticles in the vortex lattice of strongly type-II superconductors are investigated by means of a singular gauge transformation applied to the tight binding lattice Bogoliubov-de Gennes...
Vortex state in a doped Mott insulator (2000)
We analyze the recent vortex core spectroscopy experiments in cuprate superconductor and discuss what can be learned from them about the nature of the ground state in these compounds. We argue that...
Ye, Jinwu, Kim, Yong Baek, Millis, A. J., Majumdar, P., Tesanovic, Z.
We show that the Anomalous Hall Effect (AHE) observed in Colossal Magnetoresistance Manganites is a manifestation of Berry phase effects caused by carrier hopping in a non-trivial spin background. We...
A novel singular gauge transformation is developed for quasiparticles in the mixed state of a strongly type-II superconductor which permits a full solution of the problem at low and intermediate...
Quasiparticle spectra in the vicinity of a d-wave vortex (1998)
We discuss the evolution of the local quasiparticle spectral density and the related tunneling conductance measurable by the scanning tunneling microscope, as a function of distance r and angle...
de Haas-van Alphen Oscillations in a Superconducting State at High Magnetic Fields (1995)
Low-temperature quantum oscillations of the dHvA amplitude are shown to persist far below the upper critical field of a strongly type-II superconductor, due to the gapless nature of the BCS...
Superconductivity in High Magnetic Field:Excitation Spectrum and Tunneling Properties (1994)
The quasiparticle excitation spectrum of a type-II superconductor placed in high magnetic field is shown to be gapless. The gap turns to zero at the points in the MBZ which are in correspondence with...