Universality in the relaxation of spin helices under XXZ spin-chain dynamics

Popkov, Vladislav (avtor), Žnidarič, Marko (avtor), Zhang, Xin (avtor)

We describe the dynamics of a transverse spin-helix state—a product state with spatially rotating magnetization—under XXZ spin chain evolution. Due to experimental relevance we especially focus on magnetization dynamics. At long times the U(1) symmetry of the Hamiltonian is restored, leading to the decay of transverse magnetization, which can be described as an exponential decay of a spatially harmonic profile. We show that the dependence of the short- and intermediate-time decay timescale, which in principle depends on all different parameters, like the wave vector of the initial helix, the anisotropy, etc., can be described well by a single scaling function. We also briefly discuss the evolution of magnetization current.

• Jezik: Angleški jezik
• Ključne besede: statistical physics, condensed matter physics, spin chains
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Različica publikacije: Recenzirani rokopis
• Datum objave: 12.06.2023
• Leto izida: 2023
• Št. strani: Str. 235408-1-235408-14
• Številčenje: Vol. 107, iss. 23
• PID: 20.500.12556/RUL-155057
• UDK: 536.93
• ISSN pri članku: 2469-9950
• DOI: 10.1103/PhysRevB.107.235408
• COBISS.SI-ID: 188718851
• Datum objave v RUL: 18.03.2024

Gradivo je del revije

• Naslov: Physical review
• Založnik: American Physical Society
• ISSN: 2469-9950
• COBISS.SI-ID: 2997348

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: statistična fizika, fizika kondenzirane snovi, spinske verige