Zobrazeno 1 - 10
of 519
pro vyhledávání: '"Hopkinson, J."'
Publikováno v:
In Radiography July 2023 29(4):746-751
Publikováno v:
Eur. Phys. Journ. B 48, 429 (2005)
We investigate the transport properties of a (small) quantum dot connected to Fermi liquid leads with a power-law density of states (DOS). Such a system, if experimentally realizable, will have interesting physical properties including: (i) non-satur
Externí odkaz:
http://arxiv.org/abs/cond-mat/0407165
Autor:
Hopkinson, J., Hur, K. Le
Publikováno v:
Phys. Rev. B 69, 245105 (2004)
We investigate the physics of frustrated 3-leg Hubbard ladders in the band limit, when hopping across the ladder's rungs (t$_{\perp}$) is of the same order as hopping along them (t) much greater than the onsite Coulomb repulsion (U). We show that thi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308504
Autor:
Hopkinson, J., Hur, K. Le
We investigate the optical conductivity of half-filled N-leg Hubbard ladders far into the ``deconfinement'' limit (i.e., weak Hubbard interaction and relatively strong interchain hopping). The N-leg Hubbard ladder is equivalent to an N-band model wit
Externí odkaz:
http://arxiv.org/abs/cond-mat/0302385
Autor:
Hopkinson, J., Coleman, P.
Publikováno v:
Acta Physica Polonica B, 34, 733 (2003)
We present the simplest model to which one can apply the supersymmetric Hubbard operators recently introduced. For the atomic model, $H=-E_d X_{00}$, where $X_{00} = |0><0|$ is a Hubbard operator and $E_d$ is the energy of the localized spin level, w
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207111
Autor:
Hopkinson, J., Coleman, P.
Publikováno v:
Phys. Rev. Lett., 89, 267201 (2002).
We propose a two-stage spin quenching scenario for the unusual heavy fermion state realized in the mixed valent metal LiV$_2$O$_4$. In this theory, local valence fluctuations are responsible for the formation of partially quenched, spin 1/2 moments b
Externí odkaz:
http://arxiv.org/abs/cond-mat/0203288
Autor:
Hopkinson, J., Coleman, P.
Publikováno v:
Physica B, 312-313, 711 (2002)
LiV2O4, a frustrated mixed valent metal (d^1 <-> d^2), is argued to undergo two spin-screening processes. The first quenches the effective spin to produce the spin 1/2 behavior seen below room temperature[1], while the second produces the heavy fermi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110115
Publikováno v:
Phys. Rev. B 63, 140411R (2001)
We develop a supersymmetric representation of the Hubbard operator which unifies the slave boson and slave fermion representations into a single $U (1)\times SU (1| 1)$ gauge theory, a group with larger symmetry than the product of two $U (1)$ gauge
Externí odkaz:
http://arxiv.org/abs/cond-mat/0007495
Autor:
Aapro, M., Arends, J., Bozzetti, F., Fearon, K. *, Grunberg, S.M., Herrstedt, J., Hopkinson, J., Jacquelin-Ravel, N., Jatoi, A., Kaasa, S., Strasser, F.
Publikováno v:
In Annals of Oncology August 2014 25(8):1492-1499