Muon spin relaxation studies of magnetic-field-induced effects in high-Tc superconductors.
Muon spin relaxation measurements in high transverse magnetic fields [FORMULA: SEE TEXT] revealed strong field-induced quasistatic magnetism in the underdoped and Eu-doped (La,Sr)2CuO4 and La1.875Ba0.125CuO4, existing well above Tc and TN. The susceptibility counterpart of Cu spin polarization, derived from the muon spin relaxation rate, exhibits a divergent behavior towards T approximately 25 K. No field-induced magnetism was detected in overdoped La1.81Sr0.19CuO4, optimally doped Bi2212, and Zn-doped YBa2Cu3O7.
Savici
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AT
Department of Physics, Columbia University, New York, New York 10027, USA.
Fukaya
A
A
Gat-Malureanu
I M
IM
Ito
T
T
Russo
P L
PL
Uemura
Y J
YJ
Wiebe
C R
CR
Kyriakou
P P
PP
MacDougall
G J
GJ
Rovers
M T
MT
Luke
G M
GM
Kojima
K M
KM
Goto
M
M
Uchida
S
S
Kadono
R
R
Yamada
K
K
Tajima
S
S
Masui
T
T
Eisaki
H
H
Kaneko
N
N
Greven
M
M
Gu
G D
GD