Evolution of pressure-induced heavy fermion state and superconductivity inCeRhIn5:A high-pressure Fermi surface study

2002 ◽  
Vol 66 (21) ◽  
Author(s):  
H. Shishido ◽  
R. Settai ◽  
S. Araki ◽  
T. Ueda ◽  
Y. Inada ◽  
...  
Keyword(s):  
High Pressure ◽  
Fermi Surface ◽  
Heavy Fermion ◽  
Surface Study

scholarly journals Insight into thef-Derived Fermi Surface of the Heavy-Fermion CompoundYbRh2Si2

2011 ◽  
Vol 107 (26) ◽  
Author(s):  
S. Danzenbächer ◽  
D. V. Vyalikh ◽  
K. Kummer ◽  
C. Krellner ◽  
M. Holder ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Heavy Fermion ◽  
Insight Into

Magnetic oscillations in β″-(BEDT–TTF)4(NH4)[Fe(C2O4)3]·DMF: Fermi surface study and frequency mixing

2004 ◽  
Vol 346-347 ◽  
pp. 359-362
Author(s):  
V.N. Laukhin ◽  
A. Audouard ◽  
L. Brossard ◽  
T.G. Prokhorova ◽  
E.B. Yagubskii ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Surface Study ◽  
Magnetic Oscillations ◽  
Frequency Mixing

Multiprobe Signatures of the Valence Crossover in Heavy Fermion Superconductor CeCu2Si2Under High Pressure

2012 ◽  
Vol 81 (Suppl.B) ◽  
pp. SB004
Author(s):  
Gabriel Seyfarth ◽  
Anna-Sabina Rüetschi ◽  
Kausik Sengupta ◽  
Antoine Georges ◽  
Shinji Watanabe ◽  
...  
Keyword(s):  
High Pressure ◽  
Heavy Fermion ◽  
Heavy Fermion Superconductor

PRESSURE-INDUCED ELECTRONIC PHASE TRANSITIONS AND SUPERCONDUCTIVITY IN TITANIUM

2009 ◽  
Vol 23 (05) ◽  
pp. 723-741 ◽  
Author(s):  
K. IYAKUTTI ◽  
C. NIRMALA LOUIS ◽  
S. ANURATHA ◽  
S. MAHALAKSHMI
Keyword(s):  
High Pressure ◽  
Band Structure ◽  
Fermi Surface ◽  
High Pressures ◽  
Ambient Pressure ◽  
Structural Phase ◽  
Normal Pressure ◽  
Orbital Method ◽  
Superconducting Transition ◽  
Electronic Band

The electronic band structure, density of states, structural phase transition, superconducting transition and Fermi surface cross section of titanium ( Ti ) under normal and high pressures are reported. The high pressure band structure exhibits significant deviations from the normal pressure band structure due to s → d transition. On the basis of band structure and total energy results obtained using tight-binding linear muffin-tin orbital method (TB LMTO), we predict a phase transformation sequence of α( hcp ) → ω (hexagonal) → γ (distorted hcp) → β (bcc) in titanium under pressure. From our analysis, we predict a δ (distorted bcc) phase which is not stable at any high pressures. At ambient pressure, the superconducting transition occurs at 0.354 K. When the pressure is increased, it is predicted that, Tc increases at a rate of 3.123 K/Mbar in hcp–Ti . On further increase of pressure, Tc begins to decrease at a rate of 1.464 K/Mbar. The highest value of Tc(P) estimated is 5.043 K for hcp–Ti , 4.538 K for ω– Ti and 4.85 K for bcc – Ti . From this, it is inferred that the maximum value of Tc(P) is rather insensitive to the crystal structure of Ti . The nonlinearities in Tc(P) is explained by considering the destruction and creation of new parts of Fermi surface at high pressure. At normal pressure, the hardness of Ti is in the following order: ω- Ti > hcp - Ti > bcc- Ti > γ- Ti .

Fermi surface study of PrCu2, CeRu2Si2, CeRu2 and UPt3

1996 ◽  
Vol 223-224 ◽  
pp. 141-148 ◽  
Author(s):  
Y Ōnuki ◽  
R Settai ◽  
H Aoki
Keyword(s):  
Fermi Surface ◽  
Surface Study
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