ePubs
The open archive for STFC research publications
Home
About ePubs
Content Policies
News
Help
Privacy/Cookies
Contact ePubs
Full Record Details
Persistent URL
http://purl.org/net/epubs/work/54090226
Record Status
Checked
Record Id
54090226
Title
Hole trapping by Ni, Kondo effect, and electronic phase diagram in nonsuperconducting Ni-substituted La 2 − x Sr x Cu 1 − y Ni y O 4
Contributors
K Suzuki
,
T Adachi
,
Y Tanabe
,
Y Koike
,
T Kawamata
,
R Risdiana
,
T Suzuki
,
I Watanabe
Abstract
In order to investigate the electronic state in the normal state of high-Tc cuprates in a wide range of temperature and hole concentration, specific-heat, electrical-resistivity, magnetization, and muon-spin-relaxation measurements have been performed in nonsuperconducting Ni-substituted La2−xSrxCu1−yNiyO4 where the superconductivity is suppressed through the partial substitution of Ni for Cu without disturbing the Cu-spin correlation in the CuO2 plane so much. In the underdoped regime, it has been found that there exist both weakly localized holes around Ni and itinerant holes at high temperatures. With decreasing temperature, all holes tend to be localized, followed by the occurrence of variable-range hopping conduction at low temperatures. Finally, in the ground state, it has been found that each Ni2+ ion traps a hole strongly and that a magnetically ordered state appears. In the overdoped regime, on the other hand, it has been found that a Kondo-type state is formed around each Ni2+ spin at low temperatures. In conclusion, the ground state of nonsuperconducting La2−xSrxCu1−yNiyO4 changes upon hole doping from a magnetically ordered state with the strong hole trapping by Ni2+ to a metallic state with Kondo-type behavior due to Ni2+ spins, and the quantum phase transition is crossoverlike due to the phase separation into short-range magnetically ordered and metallic regions.
Organisation
ISIS
,
ISIS-RIKEN
,
ISIS-MUONS
,
STFC
Keywords
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Phys Rev B
82 (2010): 054519.
https://doi.org/1…3/PhysRevB.82.054519
2010
Showing record 1 of 1
Recent Additions
Browse Organisations
Browse Journals/Series
Login to add & manage publications and access information for OA publishing
Username:
Password:
Useful Links
Chadwick & RAL Libraries
SHERPA FACT
SHERPA RoMEO
SHERPA JULIET
Journal Checker Tool
Google Scholar