42. Measurements of the temperature dependence of the excitation spectrum of liquid helium

Physica ◽  
1958 ◽  
Vol 24 ◽  
pp. S146 ◽  
Author(s):  
J. Yarnell Bendt ◽  
E.C. Kerr ◽  
Arnold
Keyword(s):  
Temperature Dependence ◽  
Liquid Helium ◽  
Excitation Spectrum

scholarly journals Temperature dependence of the $(\pi,0)$ anomaly in the excitation spectrum of the 2D quantum Heisenberg antiferromagnet

2020 ◽  
Vol 32 (37) ◽  
pp. 374007
Author(s):  
W Wan ◽  
N B Christensen ◽  
A W Sandvik ◽  
P Tregenna-Piggott ◽  
G J Nilsen ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Excitation Spectrum ◽  
Heisenberg Antiferromagnet

Hard-Sphere Approach to the Excitation Spectrum in Liquid Helium II

1964 ◽  
Vol 135 (5A) ◽  
pp. A1166-A1172 ◽  
Author(s):  
L. Liu ◽  
Lu Sun Liu ◽  
K. W. Wong
Keyword(s):  
Liquid Helium ◽  
Excitation Spectrum ◽  
Hard Sphere ◽  
Helium Ii

ANOMALOUS NORMAL STATE PROPERTIES OF UNDERDOPED Bi 2212 THIN FILMS

2004 ◽  
Vol 18 (15) ◽  
pp. 2209-2214
Author(s):  
G. STIUFIUC ◽  
R. STIUFIUC ◽  
E. MACOCIAN ◽  
H. RAFFY ◽  
G. ILONCA
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Excitation Spectrum ◽  
Normal State ◽  
Characteristic Temperature ◽  
Epitaxial Thin Films ◽  
Normal State Properties ◽  
Upward Curvature ◽  
Significant Change

We investigate the effect of the opening of the pseudogap on the temperature dependence of the in-plane resistivity ρab(T) for Bi 2212 epitaxial thin films having different oxygen contents. Using successive annealing treatments we were able to bring the films from a maximally overdoped state (characterized by a T c of 63 K) to a strongly underdoped state (T c <10 K ). We also observed a significant change in the temperature dependence of the in-plane resistivity ρab(T). This dependence presents two major characteristics: for the overdoped sample we observed an upward curvature from linearity while for underdoped samples we observed a downturn from linearity starting from a characteristic temperature T* which will be associated with the opening of the pseudogap in the excitation spectrum.

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