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pro vyhledávání: '"Simón, M. E."'
Autor:
Simon, M. E., Varma, C. M.
A proposal to test the proposed time-reversal and inversion breaking phase in the Pseudogap region of the Cuprate compounds through the variation of Second-harmonic generation intensity with temperature and polarization and angle of incidence is pres
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210672
Autor:
Simon, M. E., Varma, C. M.
We present general symmetry considerations on how a Time-reversal breaking state may be detected by angle-resolved photoemission using circularly polarized photons as has been proposed earlier. Results of recent experiments utilizing the proposal in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0201036
Autor:
Simon, M. E., Varma, C. M.
We consider the dynamics of lattices which have constrained constitutive units flexible in only their mutual orientations. A continuum description is derived through which it is shown that the models have zero shear velocity, free-particle like inter
Externí odkaz:
http://arxiv.org/abs/cond-mat/0011194
Autor:
Simon, M. E., Varma, C. M.
We solve the problem of a magnetic impurity in a $d_{x^2-y^2}$-wave superconductor by a variational method. A moment is found to exist in the superconducting state only if the Kondo-temperature in the normal state is larger than the maximum in the su
Externí odkaz:
http://arxiv.org/abs/cond-mat/9905349
We study the Cu and O spectral density of states and the optical conductivity of CuO_2 planes using an effective generalized one-band Hubbard model derived from the extended three-band Hubbard model. We solve exactly a square cluster of 10 unit cells
Externí odkaz:
http://arxiv.org/abs/cond-mat/9707128
We study the electronic excitations near the charge-transfer gap in insulating CuO$_2$ planes, starting from a six-band model which includes $% p_\pi $ and $d_{xy}$ orbitals and Cu-O nearest-neighbor repulsion $U_{pd}$. While the low lying electronic
Externí odkaz:
http://arxiv.org/abs/cond-mat/9601094
Autor:
Simón, M. E., Aligia, A. A.
We study the Cu-O valence instability (VI) and the related phase separation (PS) driven by Cu-O nearest-neighbor repulsion $U_{pd}$, using an effective extended one-band Hubbard model ($H_{eff}$) obtained from the extended three-bandHubbard model, th
Externí odkaz:
http://arxiv.org/abs/cond-mat/9601104
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