Search for multipolar instability in URu2Si2 studied by ultrasonic measurements under pulsed magnetic field
- Hokkaido Univ., Sapporo (Japan)
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany)
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany); Dresden Univ. of Technology (Germany)
- Univ. of California, San Diego, CA (United States)
- Univ. of California, San Diego, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Tohoku Univ., Sendai (Japan); Alternative Energies and Atomic Energy Commission (CEA), Grenoble (France)
In this study, the elastic properties of URu2Si2 in the high magnetic field region above 40 T, over a wide temperature range from 1.5 to 120 K, were systematically investigated by means of high-frequency ultrasonic measurements. The investigation was performed at high magnetic fields to better investigate the innate bare 5f-electron properties, since the unidentified electronic thermodynamic phase of unknown origin, the so-called “hidden order” (HO), and associated hybridization of conduction and f-electrons (c-f hybridization) are suppressed at high magnetic fields. From the three different transverse modes we find contrasting results; both the Γ4(B2g) and Γ5(Eg) symmetry modes C66 and C44 show elastic softening that is enhanced above 30 T, while the characteristic softening of the Γ3(B1g) symmetry mode (C11 – C12)/2 is suppressed in high magnetic fields. These results underscore the presence of a hybridization-driven Γ3(B1g) lattice instability in URu2Si2. However, the results from this work cannot be explained by using existing crystalline electric field schemes applied to the quadrupolar susceptibility in a local 5f2 configuration. Instead, we present an analysis based on a band Jahn-Teller effect.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA); Japan Society for the Promotion of Science (JSPS)
- Grant/Contract Number:
- 89233218CNA000001; FG02-04-ER46105; JP17K05525(C); JP16H04006; JP15H05882; JP15H05884; JP15H05745; JP15KK0146; JP15K21732; JP23740250; JP23102701
- OSTI ID:
- 1766990
- Alternate ID(s):
- OSTI ID: 1433456
- Report Number(s):
- LA-UR-18-28593; TRN: US2206324
- Journal Information:
- Physical Review B, Vol. 97, Issue 15; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Evidence for the Single-Site Quadrupolar Kondo Effect in the Dilute Non-Kramers System
|
journal | August 2019 |
Hidden order and beyond: an experimental—theoretical overview of the multifaceted behavior of URu 2 Si 2
|
journal | January 2020 |
High magnetic field behavior of strongly correlated uranium-based compounds
|
journal | October 2017 |
Pressure-induced rotational symmetry breaking in URu2Si2
|
text | January 2018 |
Similar Records
Probing phonons in plutonium
Elastic properties of the heavy fermion superconductor URu[sub 2]Si[sub 2]