A Pair of 2D Quantum Liquids: Investigating the Phase Behavior of Indirect Excitons.
A Pair of 2D Quantum Liquids: Investigating the Phase Behavior of Indirect Excitons.
复制标题
DOI:
10.1021/acsnano.2c06947
复制
发表时间:
2022-09-27
期刊:
影响因子:
17.1
通讯作者:
Geissler, Phillip L.
中科院分区:
文献类型:
--
作者:
Wrona, Paul R.;Rabani, Eran;Geissler, Phillip L.
Long-lived indirect excitons (IXs) exhibit a rich phase diagram, including a Bose–Einstein condensate (BEC), a Wigner crystal, and other exotic phases. Recent experiments have hinted at a “classical” liquid of IXs above the BEC transition. To uncover the nature of this phase, we use a broad range of theoretical tools and find no evidence of a driving force toward classical condensation. Instead, we attribute the condensed phase to a quantum electron–hole liquid (EHL), first proposed by Keldysh for direct excitons. Taking into account the association of free carriers into bound excitons, we study the phase equilibrium between a gas of excitons, a gas of free carriers, and an EHL for a wide range of electron–hole separations, temperatures, densities, and mass ratios. Our results agree reasonably well with recent measurements of GaAs/AlGaAs coupled quantum wells.
登录
查看更多内容
影响因子:
4.4
作者:
Sager, LeeAnn M.;Schouten, Anna O.;Mazziotti, David A.
通讯作者:
Mazziotti, David A.
影响因子:
8.6
作者:
THOMAS, GA;RICE, TM;HENSEL, JC
通讯作者:
HENSEL, JC
影响因子:
1.7
作者:
KURAMOTO, Y;KAMIMURA, H
通讯作者:
KAMIMURA, H
影响因子:
4.4
作者:
Needs, R. J.;Towler, M. D.;Trail, J. R.
通讯作者:
Trail, J. R.
影响因子:
10.8
作者:
High, A. A.;Leonard, J. R.;Gossard, A. C.
通讯作者:
Gossard, A. C.