TY - JOUR
T1 - Chirality-Induced Spin Selectivity (CISS) Effect
T2 - Magnetocurrent-Voltage Characteristics with Coulomb Interactions I
AU - Huisman, Karssien Hero
AU - Heinisch, Jan Brian Mi Yu
AU - Thijssen, Joseph Marie
PY - 2023
Y1 - 2023
N2 - One of the manifestations of chirality-induced spin selectivity (CISS) is the appearance of a magnetocurrent. Magnetocurrent is the observation that the charge currents at finite bias in a two terminal device for opposite magnetizations of one of the leads differ. Magnetocurrents can only occur in the presence of interactions of the electrons either with vibrational modes or among themselves through the Coulomb interaction. In experiments on chiral molecules assembled in monolayers, the magnetocurrent seems to be dominantly cubic (odd) in bias voltage while theory finds a dominantly even bias voltage dependence. Thus far, theoretical work has predicted a magnetocurrent which is even bias. Here we analyze the bias voltage dependence of the magnetocurrent numerically and analytically involving the spin-orbit and Coulomb interactions (through the Hartree-Fock and Hubbard One approximations). For both approximations it is found that for strong Coulomb interactions the magnetocurrent is dominantly odd in bias voltage, confirming the symmetry observed in experiment.
AB - One of the manifestations of chirality-induced spin selectivity (CISS) is the appearance of a magnetocurrent. Magnetocurrent is the observation that the charge currents at finite bias in a two terminal device for opposite magnetizations of one of the leads differ. Magnetocurrents can only occur in the presence of interactions of the electrons either with vibrational modes or among themselves through the Coulomb interaction. In experiments on chiral molecules assembled in monolayers, the magnetocurrent seems to be dominantly cubic (odd) in bias voltage while theory finds a dominantly even bias voltage dependence. Thus far, theoretical work has predicted a magnetocurrent which is even bias. Here we analyze the bias voltage dependence of the magnetocurrent numerically and analytically involving the spin-orbit and Coulomb interactions (through the Hartree-Fock and Hubbard One approximations). For both approximations it is found that for strong Coulomb interactions the magnetocurrent is dominantly odd in bias voltage, confirming the symmetry observed in experiment.
UR - http://www.scopus.com/inward/record.url?scp=85151854444&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.2c08807
DO - 10.1021/acs.jpcc.2c08807
M3 - Article
AN - SCOPUS:85151854444
SN - 1932-7447
VL - 127
SP - 6900
EP - 6905
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 14
ER -