The antiferromagnetic phase of the Floquet-driven Hubbard model
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The antiferromagnetic phase of the Floquet-driven Hubbard model. / Walldorf, Nicklas; Paaske, Jens; Kennes, Dante M.; Millis, Andrew J.
In: Physical Review B, Vol. 100, 121110, 20.09.2019.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The antiferromagnetic phase of the Floquet-driven Hubbard model
AU - Walldorf, Nicklas
AU - Paaske, Jens
AU - Kennes, Dante M.
AU - Millis, Andrew J.
N1 - [Qdev]
PY - 2019/9/20
Y1 - 2019/9/20
N2 - A saddle point plus fluctuation analysis of the periodically driven half-filled two-dimensional Hubbard model is performed. For drive frequencies below the equilibrium gap, we find discontinuous transitions to time-dependent solutions. A highly excited, generically nonthermal distribution of magnons occurs even for drive frequencies far above the gap. Above a critical drive amplitude, the low-energy magnon distribution diverges as the frequency tends to zero and antiferromagnetism is destroyed, revealing the generic importance of collective mode excitations arising from a nonequilibrium drive.
AB - A saddle point plus fluctuation analysis of the periodically driven half-filled two-dimensional Hubbard model is performed. For drive frequencies below the equilibrium gap, we find discontinuous transitions to time-dependent solutions. A highly excited, generically nonthermal distribution of magnons occurs even for drive frequencies far above the gap. Above a critical drive amplitude, the low-energy magnon distribution diverges as the frequency tends to zero and antiferromagnetism is destroyed, revealing the generic importance of collective mode excitations arising from a nonequilibrium drive.
U2 - 10.1103/PhysRevB.100.121110
DO - 10.1103/PhysRevB.100.121110
M3 - Journal article
VL - 100
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
M1 - 121110
ER -
ID: 227781740