Quantum critical scaling in the disordered itinerant ferromagnet UCo1-xFexGe
Abstract
The Belitz-Kirkpatrick-Vojta (BKV) theory shows in excellent agreement with experiment that ferromagnetic quantum phase transitions (QPTs) in clean metals are generally first order due to the coupling of the magnetization to electronic soft modes, in contrast to the classical analogue that is an archetypical second-order phase transition. For disordered metals the BKV theory predicts that the secondorder nature of the QPT is restored because the electronic soft modes change their nature from ballistic to diffusive. Lastly, our low-temperature magnetization study identifies the ferromagnetic QPT in the disordered metal UCo1$$-$$xFexGe as the first clear example that exhibits the associated critical exponents predicted by the BKV theory.
- Authors:
-
[2];
[2];
[2];
[2]
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of California, San Diego, CA (United States). Dept. of Physics
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of California, San Diego, CA (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1345933
- Alternate Identifier(s):
- OSTI ID: 1333982
- Report Number(s):
- LA-UR-16-26014
Journal ID: ISSN 0031-9007; TRN: US1701192
- Grant/Contract Number:
- AC52-06NA25396; FG02-04ER46105
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 117; Journal Issue: 23; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Huang, Kevin, Eley, Serena Merteen, Civale, Leonardo, Bauer, Eric Dietzgen, Baumbach, Ryan E., Maple, M. Brian, and Janoschek, Marc. Quantum critical scaling in the disordered itinerant ferromagnet UCo1-xFexGe. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.117.237202.
Huang, Kevin, Eley, Serena Merteen, Civale, Leonardo, Bauer, Eric Dietzgen, Baumbach, Ryan E., Maple, M. Brian, & Janoschek, Marc. Quantum critical scaling in the disordered itinerant ferromagnet UCo1-xFexGe. United States. https://doi.org/10.1103/PhysRevLett.117.237202
Huang, Kevin, Eley, Serena Merteen, Civale, Leonardo, Bauer, Eric Dietzgen, Baumbach, Ryan E., Maple, M. Brian, and Janoschek, Marc. Wed .
"Quantum critical scaling in the disordered itinerant ferromagnet UCo1-xFexGe". United States. https://doi.org/10.1103/PhysRevLett.117.237202. https://www.osti.gov/servlets/purl/1345933.
@article{osti_1345933,
title = {Quantum critical scaling in the disordered itinerant ferromagnet UCo1-xFexGe},
author = {Huang, Kevin and Eley, Serena Merteen and Civale, Leonardo and Bauer, Eric Dietzgen and Baumbach, Ryan E. and Maple, M. Brian and Janoschek, Marc},
abstractNote = {The Belitz-Kirkpatrick-Vojta (BKV) theory shows in excellent agreement with experiment that ferromagnetic quantum phase transitions (QPTs) in clean metals are generally first order due to the coupling of the magnetization to electronic soft modes, in contrast to the classical analogue that is an archetypical second-order phase transition. For disordered metals the BKV theory predicts that the secondorder nature of the QPT is restored because the electronic soft modes change their nature from ballistic to diffusive. Lastly, our low-temperature magnetization study identifies the ferromagnetic QPT in the disordered metal UCo1$-$xFexGe as the first clear example that exhibits the associated critical exponents predicted by the BKV theory.},
doi = {10.1103/PhysRevLett.117.237202},
journal = {Physical Review Letters},
number = 23,
volume = 117,
place = {United States},
year = {Wed Nov 30 00:00:00 EST 2016},
month = {Wed Nov 30 00:00:00 EST 2016}
}
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- npj Quantum Materials, Vol. 2, Issue 1