TY - JOUR
T1 - Analogs of Rashba-Edelstein effect from density functional theory
AU - Tenzin, Karma
AU - Roy, Arunesh
AU - Jafari, Homayoun
AU - Banas, Bruno
AU - Cerasoli, Frank T.
AU - Date, Mihir
AU - Jayaraj, Anooja
AU - Buongiorno Nardelli, Marco
AU - Sławińska, Jagoda
N1 - Funding Information:
We thank Andrew Supka for the useful support. J.S. acknowledges the Rosalind Franklin Fellowship from the University of Groningen. The calculations were carried out on the Dutch national e-infrastructure with the support of SURF Cooperative (EINF-2070), on the Peregrine high-performance computing cluster of the University of Groningen and in the Texas Advanced Computing Center at the University of Texas, Austin.
Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/4/15
Y1 - 2023/4/15
N2 - Studies of structure-property relationships in spintronics are essential for the design of materials that can fill specific roles in devices. For example, materials with low symmetry allow unconventional configurations of charge-to-spin conversion, which can be used to generate efficient spin-orbit torques. Here, we explore the relationship between crystal symmetry and geometry of the Rashba-Edelstein effect (REE) that causes spin accumulation in response to an applied electric current. Based on a symmetry analysis performed for 230 crystallographic space groups, we identify classes of materials that can host conventional or collinear REE. Although transverse spin accumulation is commonly associated with the so-called "Rashba materials", we show that the presence of specific spin texture does not easily translate to the configuration of REE. More specifically, bulk crystals may simultaneously host different types of spin-orbit fields, depending on the crystallographic point group and the symmetry of the specific k vector, which, averaged over the Brillouin zone, determine the direction and magnitude of the induced spin accumulation. To explore the connection between crystal symmetry, spin texture, and the magnitude of REE, we perform first-principles calculations for representative materials with different symmetries. We believe that our results will be helpful for further computational and experimental studies, as well as the design of spintronics devices.
AB - Studies of structure-property relationships in spintronics are essential for the design of materials that can fill specific roles in devices. For example, materials with low symmetry allow unconventional configurations of charge-to-spin conversion, which can be used to generate efficient spin-orbit torques. Here, we explore the relationship between crystal symmetry and geometry of the Rashba-Edelstein effect (REE) that causes spin accumulation in response to an applied electric current. Based on a symmetry analysis performed for 230 crystallographic space groups, we identify classes of materials that can host conventional or collinear REE. Although transverse spin accumulation is commonly associated with the so-called "Rashba materials", we show that the presence of specific spin texture does not easily translate to the configuration of REE. More specifically, bulk crystals may simultaneously host different types of spin-orbit fields, depending on the crystallographic point group and the symmetry of the specific k vector, which, averaged over the Brillouin zone, determine the direction and magnitude of the induced spin accumulation. To explore the connection between crystal symmetry, spin texture, and the magnitude of REE, we perform first-principles calculations for representative materials with different symmetries. We believe that our results will be helpful for further computational and experimental studies, as well as the design of spintronics devices.
UR - http://www.scopus.com/inward/record.url?scp=85158832290&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.107.165140
DO - 10.1103/PhysRevB.107.165140
M3 - Article
SN - 0163-1829
VL - 107
JO - Physical Review B
JF - Physical Review B
IS - 16
M1 - 165140
ER -