Correlation between Soft Mode Frequency and Carrier Concentration in Doped Strontium Titanate Crystals

2021 ◽  
Author(s):  
Seiji Kojima
Keyword(s):  
Carrier Concentration ◽  
Strontium Titanate ◽  
Soft Mode ◽  
Mode Frequency

Magnetic-field dependence of the soft-mode frequency in KTa03AT 20K

1982 ◽  
Vol 44 (1) ◽  
pp. 121-128 ◽  
Author(s):  
W. N. Lawless ◽  
C. F. Clark ◽  
S. L. Swartz
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Soft Mode ◽  
Mode Frequency

scholarly journals Strain and ferroelectric soft-mode induced superconductivity in strontium titanate

2018 ◽  
Vol 97 (14) ◽  
Author(s):  
K. Dunnett ◽  
Awadhesh Narayan ◽  
N. A. Spaldin ◽  
A. V. Balatsky
Keyword(s):  
Strontium Titanate ◽  
Soft Mode

STABILISATION OF PARAELECTRIC PHASE BY STRONG CUBIC AND QUARTIC PHONON ANHARMONICITIES IN KDP CRYSTAL

1995 ◽  
Vol 09 (01) ◽  
pp. 45-55 ◽  
Author(s):  
T.C. UPADHYAY ◽  
N.S. PANWAR ◽  
B S. SEMWAL
Keyword(s):  
Soft Mode ◽  
Mode Frequency ◽  
Dielectric Susceptibility ◽  
Tangent Loss ◽  
Kdp Crystal ◽  
Coupled Mode ◽  
Para Phase ◽  
Real Value ◽  
Double Time ◽  
Anharmonic Interactions

Considering cubic and quartic phonon anharmonic interactions into the pseudospinphonon coupled mode model of Kobayashi6 expressions for shift, width, soft mode frequency and hence Curie temperature, dielectric susceptibility, Curie-Weiss constant and dielectric (tangent) loss have been evaluated for ferroelectric KDP. The method of retarded double-time thermal Green’s function and the treatment of Dyson’s equation have been used in the development. It is shown that cubic and quartic phonon anharmonic interactions render real value to the soft mode frequency in the para-phase. Results are in agreement with the experimental results of others.

scholarly journals Superfluid density and carrier concentration across a superconducting dome: The case of strontium titanate

2017 ◽  
Vol 96 (22) ◽  
Author(s):  
Clément Collignon ◽  
Benoît Fauqué ◽  
Antonella Cavanna ◽  
Ulf Gennser ◽  
Dominique Mailly ◽  
...  
Keyword(s):  
Carrier Concentration ◽  
Strontium Titanate ◽  
Superfluid Density

Temperature Dependence of Soft Mode Frequency and Dielectric Constant in Ferroelectric PbHPO[sub 4] Crystal

2011 ◽  
Author(s):  
Trilok Chandra Upadhayay ◽  
Mayank Joshi ◽  
P. K. Bajpai ◽  
K. S. Ojha ◽  
K. N. Singh
Keyword(s):  
Dielectric Constant ◽  
Temperature Dependence ◽  
Soft Mode ◽  
Mode Frequency

Variation of the soft-mode frequency in ferroelectric semiconductors in a static electric field

1988 ◽  
Vol 31 (1) ◽  
pp. 29-33
Author(s):  
G. M. Benkin ◽  
V. V. Zil'berberg ◽  
N. V. Shchedrina
Keyword(s):  
Electric Field ◽  
Soft Mode ◽  
Mode Frequency ◽  
Static Electric Field

Soft-mode dynamics in micrograin and nanograin ceramics of strontium titanate observed by hyper-Raman scattering

2013 ◽  
Vol 87 (1) ◽  
Author(s):  
B. Hehlen ◽  
A. Al-Zein ◽  
C. Bogicevic ◽  
P. Gemeiner ◽  
J-M. Kiat
Keyword(s):  
Raman Scattering ◽  
Strontium Titanate ◽  
Soft Mode
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