Screening of a Positive Muon by a Semion Gas

1991 ◽  
Vol 05 (10) ◽  
pp. 1579-1588 ◽  
Author(s):  
T. McMullen ◽  
P. Jena ◽  
S. N. Khanna
Keyword(s):  
Magnetic Field ◽  
Minimum Energy ◽  
Electron System ◽  
Electron Systems ◽  
Correlated Electron Systems ◽  
Muon Site ◽  
Correlated Electron ◽  
Highly Correlated ◽  
The Magnetic Field ◽  
Positively Charged

μSR is one of the experimental techniques used to search for manifestations of the broken [Formula: see text] and [Formula: see text] symmetries predicted by some theories of highly correlated electron systems. When [Formula: see text] and [Formula: see text] are broken, the screening of the positively charged muon by the electron system generates a magnetic field in addition to any intrinsic magnetic field that may be present. We estimate the magnetic field that is induced at a muon site when the muon is screened by the fractional statistics gas. The value depends on the distance between the muon and the anyon plane, and a simple theoretical approach to the calculation of the minimum energy muon sites is outlined and some results for Bi 2 Sr 2 CaCu 2 O 8 and YBa 2 Cu 3 O 7 are presented.

HEAVY FERMIONS — THEIR MAGNETISM AND SUPERCONDUCTIVITY

1993 ◽  
Vol 07 (01n03) ◽  
pp. 2-8 ◽  
Author(s):  
F. STEGLICH ◽  
C. GEIBEL ◽  
A. LOIDL ◽  
G. SPARN ◽  
C. D. BREDL ◽  
...  
Keyword(s):  
Long Range ◽  
Heavy Fermion ◽  
Local Moment ◽  
Antiferromagnetic Order ◽  
Electron Systems ◽  
Correlated Electron Systems ◽  
Cooperative Phenomena ◽  
Correlated Electron ◽  
Highly Correlated ◽  
Heavy Fermion Superconductivity

Heavy-fermion compounds are ideally suited to study cooperative phenomena in highly correlated electron systems. We discuss local-moment magnetism and heavy-fermion band magnetism in the exemplary systems CeCu 2 Ge 2 and Ni-rich Ce(Cu 1− x Ni x )2 Ge 2, respectively. In addition, the coexistence of long-range antiferromagnetic order and heavy-fermion superconductivity in UM 2 Al 3 (M: Ni, Pd) will be addressed.

Photogenerated States in a Highly Correlated Electron System

2003 ◽  
Vol 17 (18n20) ◽  
pp. 3370-3372
Author(s):  
M. Aihara ◽  
A. Takahashi ◽  
H. Gomi
Keyword(s):  
Energy State ◽  
Optical Excitation ◽  
Transient Behavior ◽  
Electron System ◽  
Square Lattice ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Correlated Electron ◽  
Highly Correlated ◽  
Correlated Electron System

We study the properties of photogenerated states of strongly correlated electron systems (SCES) with using the 'excited-state' t-J Hamiltonian. The lowest energy state in the two-photon excited manifold is calculated for the 20 site two-dimensional square lattice at half filling. The analysis of the off-diagonal order suggests that the d-wave superconducting state is photogenerated. We propose an optical method using the virtual transition to avoid the temperature growth arising from the optical excitation. We also investigate the transient behavior of the photoexcited state in SCES, which distinctively reflects the spin-charge separation in SCES.

scholarly journals Electron-Transfer Processes in Highly-Correlated Electron Systems of Thiazyl Radicals

2014 ◽  
Vol 87 (2) ◽  
pp. 234-249 ◽  
Author(s):  
Kunio Awaga ◽  
Kenji Nomura ◽  
Hideo Kishida ◽  
Wataru Fujita ◽  
Hirofumi Yoshikawa ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electron Systems ◽  
Correlated Electron Systems ◽  
Transfer Processes ◽  
Correlated Electron ◽  
Thiazyl Radicals ◽  
Highly Correlated ◽  
Electron Transfer Processes
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