Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Loh, Y. L."'
Publikováno v:
Physical Review Letters 107, 067003 (2011)
Tunneling density of states measurements of disordered superconducting (SC) Al films in high Zeeman fields reveal a significant population of subgap states which cannot be explained by standard BCS theory. We provide a natural explanation of these ex
Externí odkaz:
http://arxiv.org/abs/1102.3889
We propose that thermal noise in local stripe orientation should be readily detectable via STM on systems in which local stripe orientations are strongly affected by quenched disorder. Stripes, a unidirectional, nanoscale modulation of electronic cha
Externí odkaz:
http://arxiv.org/abs/1003.2216
Large Range of Stability of Larkin-Ovchinnikov States for Imbalanced Fermi Gases in Optical Lattices
Autor:
Loh, Y. L., Trivedi, N.
We show that Larkin-Ovchinnikov (LO) states with modulated superfluid order parameters have a considerably larger range of stability in a lattice than in the continuum. We obtain the phase diagram for the 3D cubic attractive Hubbard model with an une
Externí odkaz:
http://arxiv.org/abs/0907.0679
Recently, we developed and implemented the bond propagation algorithm for calculating the partition function and correlation functions of random bond Ising models in two dimensions. The algorithm is the fastest available for calculating these quantit
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703043
Autor:
Loh, Y. L., Carlson, E. W.
Superconductors with low superfluid density can be described by XY models. In such models the scale of the transition temperature T_c is largely set by the zero temperature phase stiffness (helicity modulus), a long-wavelength property of the system:
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611719
Autor:
Loh, Y. L., Littlewood, P. B.
We consider an s-wave superconductor in the vicinity of a second-order ferromagnetic (FM) or spin-density-wave (SDW) quantum critical point (QCP), where the superconductivity and magnetism arise from separate mechanisms. The quantum critical spin flu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611718
Autor:
Loh, Y. L., Carlson, E. W.
We present an efficient algorithm for calculating the properties of Ising models in two dimensions, directly in the spin basis, without the need for mapping to fermion or dimer models. The algorithm gives numerically exact results for the partition f
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610822
Autor:
Tripathi, V., Loh, Y. L.
Publikováno v:
Physical Review B 73, 195113 (2006)
We study the finite-temperature optical conductivity, sigma(omega,T), of a granular metal using a simple model consisting of a array of spherical metallic grains. It is necessary to include quantum tunneling and Coulomb blockade effects to obtain the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601138
Autor:
Tripathi, V., Loh, Y. L.
Publikováno v:
Physical Review Letters 96, 046805 (2006)
We obtain the Kubo formula for the electronic thermal conductivity kappa(T) of a granular metal array at low temperatures for the Ambegaokar-Eckern-Schoen (AES) model and study the kinetic and potential contributions in the diamagnetic (local) and pa
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508053
Publikováno v:
Physical Review B 72, 233404 (2005) [Brief Reports]
We study the Ambegaokar-Eckern-Sch\"{o}n (AES) model for a regular array of metallic grains coupled by tunnel junctions of conductance $g$ and calculate both paramagnetic and diamagnetic terms in the Kubo formula for the conductivity. We find analyti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0501749