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, helicoidal magnetic texture, spin dynamics, 1-dimensional spin chains, quantum spin models, Heisenberg model, thermodynamics, condensed matter, materials, applied physics
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Leto izida: 2023
• Št. strani: 14 str.
• Številčenje: Vol. 107, iss. 23, art. 235408
• 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