Spin and pair density waves in two-dimensional altermagnetic metals
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00643365" target="_blank" >RIV/68378271:_____/25:00643365 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0377026" target="_blank" >https://hdl.handle.net/11104/0377026</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/llrq-1k9k" target="_blank" >10.1103/llrq-1k9k</a>
Alternative languages
Result language
angličtina
Original language name
Spin and pair density waves in two-dimensional altermagnetic metals
Original language description
Altermagnetism, a recently proposed and experimentally confirmed class of magnetic order, features collinear compensated magnetism with unconventional spin-split bands. Here, we show that in a metallic 2D d-wave altermagnet with [C2||C4] symmetry, secondary instabilities can arise. Using an unbiased functional renormal ization group approach, we analyze the weak-coupling instabilities of a 2D Hubbard model with a preexisting altermagnetic order inspired by our ab initio electronic structure calculations of realistic material candidates from V2X2 O(X = Te, Se) family. We identify two distinct spin-density-wave (SDW) states that break the underlying altermagnetic [C2||C4] symmetry. Additionally, we find spin-fluctuation-induced instabilities leading to a singlet d-wave superconducting state and an unconventional commensurate pair-density-wave (PDW) state with extended s-wave and spin-triplet symmetry. We analyze the pairing mechanism and characterize the excitation spectrum, which exhibits Bogoliubov Fermi surfaces or nodal points depending on the gap size.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
2469-9969
Volume of the periodical
112
Issue of the periodical within the volume
21
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
214410
UT code for WoS article
001633684700004
EID of the result in the Scopus database
2-s2.0-105026659316