Published March 18, 2015 | Version v1
Journal article Metadata-only

Origin of the black-golden transition in Sm1-xYxS

Creators

  • 1. Graduate School of Science, Nagoya University, Nagoya 464-8602 (Japan)
  • 2. Graduate School of Engineering, Nagoya University, Nagoya 464-8603 (Japan)
  • 3. UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585 (Japan)
  • 4. Quantum Beam Center, National Institute for Materials Science, Tsukuba 305-0047 (Japan)

Description

We report angle-resolved photoemission spectroscopy, electrical resistivity and Hall effect measurements on Sm1-xYxS. At the smallest doping concentration x = 0.03, the system changes from a semiconducting to metallic conductivity, whereas it is at a critical concentration xc ≊ 0.19 that there occurs the volume collapse accompanied by a color change from black to golden. It appears that the band gap between 4f and 5d bands vanishes at xc. From these results, we suggest that the black-to-golden transition of Sm1-xYxS has the same mechanism as the pressure-induced valence transition of SmS, but the semiconductor-to-metal transition has a different origin for Sm1-xYxS and SmS

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/592/1/012028

Additional details

Identifiers

DOI
10.1088/1742-6596/592/1/012028;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
592
Journal Issue
1
Journal Page Range
[6 p.]
ISSN
1742-6596

Conference

Title
International conference on strongly correlated electron systems 2014
Acronym
SCES2014
Dates
7-14 Jul 2014
Place
Grenoble (France)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47103892
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CONCENTRATION RATIO; ELECTRIC CONDUCTIVITY; ELECTRONIC STRUCTURE; ENERGY GAP; HALL EFFECT; PHASE TRANSFORMATIONS; PHOTOELECTRON SPECTROSCOPY; PRESSURE DEPENDENCE; SAMARIUM SULFIDES; SEMICONDUCTOR MATERIALS; VALENCE; YTTRIUM COMPOUNDS
Descriptors DEC
CHALCOGENIDES; DIMENSIONLESS NUMBERS; ELECTRICAL PROPERTIES; ELECTRON SPECTROSCOPY; MATERIALS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SAMARIUM COMPOUNDS; SPECTROSCOPY; SULFIDES; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS