Results 291 to 300 of about 159,585 (324)

Weak localization and crossover from Lifshitz transition in two dimensions

Physical Review B, 2021
Dirac point plays a crucial role in regulating electronic properties of topological semimetals. In two dimensions, the manipulation of Dirac points can spur a transition from Dirac semimetal through semi-Dirac phase to a gapped phase. Across such a so-called Lifshitz transition, we find that the quantum interference corrections to the conductivity ...
Kai-He Ding, Zhen-Gang Zhu, Yong-Le Hu, Gang Su   +3 more
openaire   +1 more source

Weak to strong pinning crossover in Hg-1201

Physica C: Superconductivity and its Applications, 2006
Abstract We report on detailed investigations of the mixed state in the mercury based high- T c superconductor HgBa 2 CuO 4 (Hg-1201) by means of ac and dc magnetization measurements. Over large parts of the B – T phase diagram the vortex mobility turned out to be remarkably high.
Maurer, D., Lüders, K., Breitzke, H., Baenitz, M., Pavlov, D., Antipov, E.   +5 more
openaire   +2 more sources

Strong-Field Saturation Spectroscopy of Weak Hyperfine Crossover Resonances

Europhysics Letters (EPL), 1989
We show that, thanks to a controlled use of strong laser fields in hyperfine spectroscopy of molecules, it is possible to record the crossover resonances between allowed ΔF = ΔJ lines and ΔF ≠ ΔJ lines which are very weak for high J lines. A demonstration experiment on the Q(45)A22 line of the ν3 band of SF6 yields very accurate values of the spin ...
Ch Chardonnet, Ch. J Bordé
openaire   +1 more source

Locative Inversion, PP Topicalization, and Weak Crossover in English

Journal of Linguistics, 2021
The literature on locative inversion in English currently disputes whether locative inversion differs from PP topicalization in permitting a quantifier in the fronted PP to bind a pronoun in the subject. In order to resolve this dispute, this paper runs two experiments on Amazon Mechanical Turk, one an acceptability judgment task and the other a forced-
openaire   +1 more source

Crossover between weak and strong coupling in 2D superconductors

Journal of Superconductivity, 1997
We study the crossover between weak coupling and strong coupling in two-dimensional (2D) superconductors atT⊋0 in the weak coupling regime, described by the BCS state, and we calculate the order parameter and the chemical potential atT=0 andT⊋0 for the model of a 2D superconductor.
M. Crisan, I. Tifrea
openaire   +1 more source

Crossover from weak to strong Kondo behaviour in CeAl2

Physics Letters A, 1986
Abstract High pressure electrical resistance experiments performed on a single crystal of CeAl2 allow one to determine a characteristic line in the pressure-temperature plane where a continuous passage from weak to strong Kondo behaviour is observed. This line is not associated with any sizeable volume anomaly as shown by X-ray experiments.
B. Barbara, J. Beille, B. Cheiato, J.M. Laurant, M.F. Rossignol, A. Waintal, S. Zemirli   +6 more
openaire   +1 more source

Crossover from weak to strong coupling superconductivity in multi-band systems

Journal of Physics: Condensed Matter, 2010
The study of superconductivity in correlated systems is an exciting area of condensed matter physics. In this paper we consider superconducting ground states in systems described by two-band models with different effective masses. These two bands are coupled through an effective hybridization that can be directly tuned by pressure.
Francisco, Dinóla Neto, Mucio A, Continentino, Claudine, Lacroix   +2 more
openaire   +2 more sources

Weak localisation and the dimensional crossover in disordered metallic films

Journal of Physics C: Solid State Physics, 1982
Corrections to the resistance R of disordered metallic films are studied as a function of film thickness t and temperature. Using a diffusion model introduced recently at Kaveh and Mott (1981), the conditions for dimensional crossover are established. Comparison is made with recent experiments on In2O3-x films.
openaire   +1 more source

Bound pronouns and weak crossover

1990
This contribution is intended as an attempt to derive the so-called weak crossover phenomena from general principles governing scope assignment and linking of pronouns to referential expressions. It is argued that pronouns do not count as syntactic variables in the unmarked case, since they need not be linked to a c-commanding position in order to be ...
openaire   +1 more source

Crossover between weak antilocalization and weak localization of bulk states in ultrathin Bi₂Se₃ films.

Scientific reports, 2015
We report transport studies on the 5 nm thick Bi₂Se₃ topological insulator films which are grown via molecular beam epitaxy technique. The angle-resolved photoemission spectroscopy data show that the Fermi level of the system lies in the bulk conduction band above the Dirac point, suggesting important contribution of bulk states to the transport ...
Huichao, Wang, Haiwen, Liu, Cui-Zu, Chang, Huakun, Zuo, Yanfei, Zhao, Yi, Sun, Zhengcai, Xia, Ke, He, Xucun, Ma, X C, Xie, Qi-Kun, Xue, Jian, Wang   +11 more
openaire   +1 more source