MAGNETIC FIELD DEPENDENT RELAXATION TIME IN p-InSb AT LOW TEMPERATURES

1981 ◽  
Vol 42 (C5) ◽  
pp. C5-689-C5-693
Author(s):  
J. D.N. Cheeke ◽  
G. Madore ◽  
A. Hikata
Keyword(s):  
Magnetic Field ◽  
Relaxation Time ◽  
Low Temperatures ◽  
Field Dependent

Temperature and Magnetic Field Dependent Photoluminescence from Carbon Nanotubes

2007 ◽  
Vol 21 (08n09) ◽  
pp. 1180-1188 ◽  
Author(s):  
R. J. Nicholas ◽  
I. B. Mortimer ◽  
L. J. Li ◽  
A. Nish ◽  
O. Portugall ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Luminescence Intensity ◽  
Low Temperatures ◽  
Energy Splitting ◽  
Tube Axis ◽  
Small Energy ◽  
Single Walled Carbon Nanotube ◽  
Field Dependent

Photoluminescence as a function of temperature and magnetic field from single walled carbon nanotube solutions is described. This is modelled assuming that it is dominated by the small energy splitting between the dark and bright states of the singlet excitons which are found to be in the region of 1-5 meV for nanotubes of 0.8-1.2nm. The emission energies show a large red-shift due to the introduction of an Aharanov-Bohm phase by magnetic field along the tube axis and the luminescence intensity is strongly enhanced at low temperatures due to the mixing of the different valley states of the excitons.

Magnetic-field-dependent thermodynamics ofMn12-acetate single crystals at low temperatures

1999 ◽  
Vol 59 (1) ◽  
pp. 519-528 ◽  
Author(s):  
F. Fominaya ◽  
J. Villain ◽  
T. Fournier ◽  
P. Gandit ◽  
J. Chaussy ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Crystals ◽  
Low Temperatures ◽  
Field Dependent

STRUCTURAL AND MAGNETIC FIELD DEPENDENT TRANSPORT PROPERTIES OF p-MnxGe1-x/n-Ge HETEROJUNCTION

2009 ◽  
Vol 23 (17) ◽  
pp. 3579-3585
Author(s):  
SANDIP MAJUMDAR ◽  
AMAL KUMAR DAS ◽  
SAMIT KUMAR RAY
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Transport Properties ◽  
Low Temperatures ◽  
Impurity Band ◽  
Heterojunction Diode ◽  
Field Dependent ◽  
Current Rectification ◽  
Dependent Transport ◽  
Mn Doped

We report the study of a promising Ge -based magnetic heterojunction diode composed of a Mn -doped p - Ge film grown on lightly doped n - Ge film. Magnetic field dependent current rectification of the diode occurs at a low temperature. The measurements of resistivity and magnetoresistance in plane at low temperatures reveal the presence of impurity band in Ge due to Mn doping.

MAGNETIC FIELD DEPENDENT RESTSTRAHLEN SPECTRA IN PARAMAGNETIC CeF3

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-499-C6-501 ◽  
Author(s):  
H. Gerlinger ◽  
G. Schaack
Keyword(s):  
Magnetic Field ◽  
Field Dependent

Simple Systems

2017 ◽  
Author(s):  
Jochen Rau
Keyword(s):  
Magnetic Field ◽  
Low Temperatures ◽  
General Framework ◽  
Gibbs State ◽  
Macroscopic System ◽  
Basic Model ◽  
System A ◽  
Paramagnetic Salt ◽  
High And Low Temperatures ◽  
Simple Systems

Even though the general framework of statistical mechanics is ultimately targeted at the description of macroscopic systems, it is illustrative to apply it first to some simple systems: a harmonic oscillator, a rotor, and a spin in a magnetic field. These applications serve to illustrate how a key function associated with the Gibbs state, the so-called partition function, is calculated in practice, how the entropy function is obtained via a Legendre transformation, and how such systems behave in the limits of high and low temperatures. After discussing these simple systems, this chapter considers a first example where multiple constituents are assembled into a macroscopic system: a basic model of a paramagnetic salt. It also investigates the size of energy fluctuations and how—in the case of the paramagnet—these fluctuations scale with the number of constituents.

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