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Showing 2002 · cond-mat.str-elShow all

8 papers · 2 filters

cond-mat.str-el2002★ 373 cited

Universally diverging Grueneisen parameter and the magnetocaloric effect close to quantum critical points

Lijun Zhu, Markus Garst, Achim Rosch +1

At a generic quantum critical point, the thermal expansion is more singular than the specific heat . Consequently, the "Grüneisen ratio'', $\GE=α/c_p$, diverges. When scal…

cond-mat.str-el2002★ 8 cited

Local quantum critical point and non-Fermi liquid properties

Qimiao Si

Quantum criticality provides a means to understand the apparent non-Fermi liquid phenomena in correlated electron systems. How to properly describe quantum critical points in elect…

cond-mat.str-el2002★ 45 cited

Hall Effect in Nested Antiferromagnets Near the Quantum Critical Point

M. R. Norman, Qimiao Si, Ya. B. Bazaliy +1

We investigate the behavior of the Hall coefficient in the case of antiferromagnetism driven by Fermi surface nesting, and find that the Hall coefficient should abruptly increase w…

cond-mat.str-el2002★ 3 cited

Photo-thermal transitions of magneto-excitons in quantum wells

J. Cerne, J. Kono, M. Su +1

By monitoring changes in excitonic photoluminescence (PL) that are induced by terahertz (THz) radiation, we observe resonant THz absorption by magnetoexcitons in GaAs/AlGaAs quantu…

cond-mat.str-el2002★ 46 cited

Permutation-Symmetric Multicritical Points in Random Antiferromagnetic Spin Chains

Kedar Damle, David A. Huse

The low-energy properties of a system at a critical point may have additional symmetries not present in the microscopic Hamiltonian. This letter presents the theory of a class of m…

cond-mat.str-el2002★ 67 cited

Locally critical point in an anisotropic Kondo lattice

D. R. Grempel, Qimiao Si

We report the first numerical identification of a locally quantum critical point, at which the criticality of the local Kondo physics is embedded in that associated with a magnetic…

cond-mat.str-el2002★ 128 cited

Critical local moment fluctuations in the Bose-Fermi Kondo model

Lijun Zhu, Qimiao Si

We consider the critical properties of the Bose-Fermi Kondo model, which describes a local moment simultaneously coupled to a conduction electron band and a fluctuating magnetic fi…

cond-mat.str-el2002★ 140 cited

Local fluctuations in quantum critical metals

Qimiao Si, Silvio Rabello, Kevin Ingersent +1

We show that spatially local, yet low-energy, fluctuations can play an essential role in the physics of strongly correlated electron systems tuned to a quantum critical point. A de…