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We discuss the observable-dependence of the effective temperature $T_{eff}$, defined via the fluctuation-dissipation relation, of an out-of-equilibrium system composed by homonuclear dumbbell molecules. $T_{eff}$ is calculated by evaluating…

统计力学 · 物理学 2014-06-25 Andrea Saverio Ninarello , Nicoletta Gnan , Francesco Sciortino

In the nested limit of the spin-fermion model for the cuprates, one-dimensional physics in the form of half-filled two-leg ladders emerges. We show that the renormalization group flow of the corresponding ladder is towards the d-Mott phase,…

强关联电子 · 物理学 2019-03-13 Laura Classen , Neil J. Robinson , Alexei M. Tsvelik

We study the temperature dependence of discretization errors in nuclear lattice simulations. We find that for systems with strong attractive interactions the predominant error arises from the breaking of Galilean invariance. We propose a…

核理论 · 物理学 2008-11-26 Dean Lee , Richard Thomson

Finite-temperature properties of weakly doped antiferromagnets as modeled by the two-dimensional t-J model and relevant to underdoped cuprates are investigated by numerical studies of small model systems at low doping. Two numerical methods…

强关联电子 · 物理学 2007-05-23 D. Veberic , P. Prelovsek , H. G. Evertz

A full Fermi surface exists in underdoped high-temperature superconductors if the temperature T lies above the pseudogap temperature T*. Below T* only arcs of Fermi surface survive, scaling with T/T* as T -> 0, with T* displaying strong…

超导电性 · 物理学 2007-10-01 Mike Guidry , Yang Sun , Cheng-Li Wu

We use inelastic neutron scattering to study the temperature dependence of the low-energy spin excitations in single crystals of superconducting FeTe$_{0.6}$Se$_{0.4}$ ($T_c=14$ K). In the low-temperature superconducting state, the…

Temperature, pressure, and magnetic field dependencies of the resistivity of BaVS$_3$ were measured above the critical pressure of $p_{cr}$=2 GPa, which is associated with the zero temperature insulator-to-metal (MI) transition. The…

强关联电子 · 物理学 2007-12-21 N. Barišić , A. Akrap , H. Berger , L. Forró

We present a microscopic theory for the thermoelectric power (TEP) in high-Tc cuprates. Based on the general expression for the TEP, we perform the calculation of the TEP for a square lattice Hubbard model including all the vertex…

强关联电子 · 物理学 2009-11-07 Hiroshi Kontani

We use scanning tunneling microscopy to study the temperature evolution of electronic structure in Ca3Cu2O4Cl2 parent Mott insulator of cuprates. We find that the upper Hubbard band moves towards the Fermi energy with increasing…

强关联电子 · 物理学 2021-12-28 Li Haiwei , Ye Shusen , Zhao Jianfa , Jin Changqing , Yayu Wang

We study the correlation functions of quantum spin $1/2$ ladders at finite temperature, under a magnetic field, in the gapless phase at various relevant temperatures $T\neq 0$, momentum $q$ and frequencies $\omega$. We compute those…

强关联电子 · 物理学 2019-05-15 N. Kestin , T. Giamarchi

A nanowire with its two ends fixed at two different temperatures by external baths is the simplest example of a fermionic system with a temperature inhomogeneity, and could be an easy platform to study thermodynamic and transport properties…

介观与纳米尺度物理 · 物理学 2025-04-07 Yuan Gao , K. A. Muttalib

We study the effect of disorder induced by doping on the transition temperature in high $T_c$ cuprates. Since the impurity lies between the CuO$_2$ planes, the momentum transfer is restricted by small angle with a range of order of $1/(d…

超导电性 · 物理学 2009-10-31 Hae-Young Kee

The temperature dependence of the symmetry energy and the symmetry free energy coefficients of atomic nuclei is investigated in a finite temperature Thomas-Fermi framework employing the subtraction procedure. A substantial decrement in the…

核理论 · 物理学 2015-06-04 J. N. De , S. K. Samaddar

Spin-echo experiments are reported for 3He-4He solutions under extremely high B/T conditions, B=14.75 T and T >= 1.73 mK. The 3He concentration x_3 was adjusted close to the value x_c = 3.8% at which the spin rotation parameter muM_0…

凝聚态物理 · 物理学 2009-11-07 H. Akimoto , D. Candela , J. S. Xia , W. J. Mullin , E. D. Adams , N. S. Sullivan

The temperature dependence of electric transport properties of single-layer and few-layer graphene at large charge doping is of great interest both for the study of the scattering processes dominating the conductivity at different…

介观与纳米尺度物理 · 物理学 2016-09-02 R. S. Gonnelli , F. Paolucci , E. Piatti , Kanudha Sharda , A. Sola , M. Tortello , Jijeesh R. Nair , C. Gerbaldi , M. Bruna , S. Borini

We give a self-consistent theory of the scale dependent effective mass enhancement m*/m of quasiparticles by 3D antiferromagnetic (AFM) spin fluctuations in the presence of disorder at an AFM quantum critical point. The coupling of…

强关联电子 · 物理学 2013-05-29 Peter Wölfle , Elihu Abrahams

We analyze quantum fluctuation effects at the onset of charge or spin density wave order with a $2k_F$ wave vector $\mathbf{Q}$ in two-dimensional metals -- for the special case where $\mathbf{Q}$ connects a pair of hot spots situated at…

强关联电子 · 物理学 2024-02-08 Lukas Debbeler , Walter Metzner

Nuclear magnetic resonance, electron paramagnetic resonance and magnetization measurements show that bulk Li$_x$ZnPc are strongly correlated one-dimensional metals. The temperature dependence of the nuclear spin-lattice relaxation rate…

强关联电子 · 物理学 2008-08-25 M. Filibian , P. Carretta , M. C. Mozzati , P. Ghigna , G. Zoppellaro , M. Ruben

We investigate the dynamics of quantum vortex dipoles in a strongly interacting, spin-imbalanced Fermi superfluid at zero temperature. Using fully microscopic time-dependent density functional theory, we demonstrate that the dipole…

量子气体 · 物理学 2025-11-05 Andrea Barresi , Piotr Magierski , Gabriel Wlazłowski

We consider electron transport in a nearly half-metallic ferromagnet, in which the minority spin electrons close to the band edge at the Fermi energy are Anderson-localized due to disorder. For the case of spin-flip scattering of the…

材料科学 · 物理学 2009-10-31 Xindong Wang , X. -G. Zhang
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