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pro vyhledávání: '"Case, Matthew J."'
In this comment we wish to clarify and correct some of the statements made in a recent paper by E. G. Mishchenko (Europhys. Lett. 83 (2008) 17005).
Comment: 2.5 pages, 1 figure
Comment: 2.5 pages, 1 figure
Externí odkaz:
http://arxiv.org/abs/0809.0725
Autor:
Vafek, Oskar, Case, Matthew J.
Publikováno v:
Phys. Rev. B 77, 033410 (2008)
We argue that massless Dirac particles in two spatial dimensions with $1/r$ Coulomb repulsion and quenched random gauge field are described by a manifold of fixed points which can be accessed perturbatively in disorder and interaction strength, there
Externí odkaz:
http://arxiv.org/abs/0710.2907
Autor:
Case, Matthew J., Dobrosavljevic, Vlad
Publikováno v:
Proc. SPIE Vol. 6600, 66001D (2007)
In itinerant magnetic systems with disorder, the quantum Griffiths phase at T=0 is unstable to formation of a cluster glass (CG) of frozen droplet degrees of freedom. In the absence of the fluctuations associated with these degrees of freedom, the tr
Externí odkaz:
http://arxiv.org/abs/0707.0608
Autor:
Case, Matthew J., Dobrosavljevic, V.
Publikováno v:
Phys. Rev. Lett. 99, 147204 (2007)
In disordered itinerant magnets with arbitrary symmetry of the order parameter, the conventional quantum critical point between the ordered phase and the paramagnetic Fermi-liquid (PMFL) is destroyed due to the formation of an intervening cluster gla
Externí odkaz:
http://arxiv.org/abs/cond-mat/0612127
Autor:
Case, Matthew J., Herbut, Igor F.
Publikováno v:
Physical Review B, vol. 72, 104503 (2005).
We examine the nature of the collective excitations in a strongly anisotropic system of bosons interacting via Coulomb interaction. Such a system has often been used in the past to model the effects of quantum and classical phase fluctuations on the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0504266
Autor:
Herbut, Igor F., Case, Matthew J.
Publikováno v:
Physical Review B, vol. 70, 094516 (2004).
The combination of a large superconducting gap, low transition temperature, and quasi two-dimensionality in strongly underdoped high temperature superconductors severely constrains the behavior of the ab-plane superfluid density \rho with temperature
Externí odkaz:
http://arxiv.org/abs/cond-mat/0401101
Publikováno v:
Nucl.Phys.B676:572-586,2004
We consider three dimensional quantum electrodynamics (cQED3) with massless relativistic fermions coupled to a compact gauge field using a combined perturbative variational approach. Coupling to matter renders the bare interaction between magnetic mo
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308260
Autor:
Case, Matthew J., Herbut, Igor F.
Publikováno v:
J. Phys. A, vol. 34, p. 7739 (2001)
The spherical limit of strongly commensurate dirty-bosons is studied perturbatively at weak disorder and numerically at strong disorder in two dimensions (2D). We argue that disorder is not perfectly screened by interactions, and consequently that th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105442
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