Absorption Detected Magnetic Resonance 1n Zero Magnetic Field on Antenna Complexes from Rps. Acidophila 7050 - The Temperature Dependence of the Carotinoid Triplet State Properties

1988 ◽  
pp. 339-348
Author(s):  
J. Ullrich ◽  
J. U. v. Schütz ◽  
H. C. Wolf
Keyword(s):  
Magnetic Field ◽  
Magnetic Resonance ◽  
Triplet State ◽  
Temperature Dependence ◽  
Zero Magnetic Field

Magnetic Prehistory in the Heat Capacity of the Low-Temperature Superconductors

2015 ◽  
Vol 233-234 ◽  
pp. 741-744
Author(s):  
Sergey Mikhailovich Podgornykh
Keyword(s):  
Magnetic Field ◽  
Heat Capacity ◽  
External Magnetic Field ◽  
Low Temperature ◽  
Temperature Dependence ◽  
Zero Magnetic Field ◽  
Zero Field ◽  
Ring Specimen ◽  
Trapped Flux ◽  
The Magnetic Field

Effect of the magnetic prehistory on the temperature dependence of the heat capacity of the superconducting Pb, La, Sn. has been studied. As soon as the external magnetic field riches the valueHext=HCthe superconductivity is completely destroyed. The trapped flux was produced in the ring specimen after the magnetic field was turned off atT<TC. We observed a difference of the value of the heat capacity between zero field cooled (ZFC) and field cooled (FC) states in zero magnetic field for the ring specimen. It is found that the FC heat capacity is smaller than the heat capacity both in the normal and in superconducting states.

ZERO FIELD ENTANGLEMENT IN DIPOLAR COUPLING SPIN SYSTEM AT NEGATIVE TEMPERATURE

2013 ◽  
Vol 11 (05) ◽  
pp. 1350050 ◽  
Author(s):  
GREGORY B. FURMAN ◽  
VICTOR M. MEEROVICH ◽  
VLADIMIR L. SOKOLOVSKY
Keyword(s):  
Magnetic Field ◽  
Temperature Dependence ◽  
Spin System ◽  
Dipolar Coupling ◽  
Negative Temperature ◽  
Absolute Temperature ◽  
Zero Magnetic Field ◽  
Entangled States ◽  
Zero Field ◽  
Negative Temperatures

A dipolar coupled spin system can achieve internal thermodynamic equilibrium states at negative absolute temperature. We study analytically and numerically the temperature dependence of the concurrence in a dipolar coupled spin-1/2 system in both nonzero and zero fields and show that, at negative temperatures, entangled states can exist even in zero magnetic field.

Magnetic-Resonance Studies of Gaseous Atomic Hydrogen Confined at 1 K and Zero Magnetic Field

1980 ◽  
Vol 45 (6) ◽  
pp. 453-456 ◽  
Author(s):  
W. N. Hardy ◽  
M. Morrow ◽  
R. Jochemsen ◽  
B. W. Statt ◽  
P. R. Kubik ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Resonance ◽  
Atomic Hydrogen ◽  
Zero Magnetic Field ◽  
Magnetic Resonance Studies

Peculiarities of the Resistive State in Mo/Si Superlattices in a Magnetic Field

2003 ◽  
Vol 17 (10n12) ◽  
pp. 627-634 ◽  
Author(s):  
A. Yu. Aladyshkin ◽  
A. Yu. Klimov ◽  
M. A. Kucherenko ◽  
V. V. Kurin ◽  
V. L. Mironov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Temperature Dependence ◽  
Transport Properties ◽  
Transverse Magnetic ◽  
Zero Magnetic Field ◽  
Experimental Investigations ◽  
Resistive State ◽  
Sharp Change ◽  
Superconducting Transition ◽  
Multilayered Structures

The experimental investigations of the transport properties of the superconducting Mo/Si multilayered structures are presented. The observed anisotropy of the electrical resistivity of Mo/Si bridges in a weak magnetic fields H ≲ 5 × 102 Oe is in agreement with the data reported earlier. However, for the Mo/Si microbridges with the width 2 μm in a transverse magnetic field H ≳ 5 × 102 Oe we have found out that the temperature dependence of the in-plane resistivity R(T) demonstrates a sharp change of the resistivity at a certain critical temperature T* < Tc, where Tc is the superconducting transition temperature in a zero magnetic field. For a parallel magnetic field this step-like behavior has not been revealed; we neither observed this effect in wider bridges. The comparison of the transport properties and the nonlinear microwave characteristics is presented. A possible origin of this unusual temperature dependence of R(T) is proposed.

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