Pseudospin magnetism in graphene

被引：208

作者：

Min, Hongki ^{[1
]}

Borghi, Giovanni ^{[2
,3
]}

Polini, Marco ^{[2
,3
]}

MacDonald, A. H. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[2] INFM, CNR, NEST, I-56126 Pisa, Italy

[3] Scuola Normale Super Pisa, I-56126 Pisa, Italy

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.77.041407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We predict that neutral graphene bilayers are pseudospin magnets in which the charge density contribution from each valley and spin spontaneously shifts to one of the two layers. The band structure of this system is characterized by a momentum-space vortex, which is responsible for unusual competition between band and kinetic energies, leading to symmetry breaking in the vortex core. We discuss the possibility of realizing a pseudospin version of ferromagnetic metal spintronics in graphene bilayers based on hysteresis associated with this broken symmetry.

引用

页数：4

共 50 条

[21] Magnetism in Intercalated Graphene
Ali, Sajid
Nanda, B. R. K.
DAE SOLID STATE PHYSICS SYMPOSIUM 2015, 2016, 1731
[22] MAGNETISM IN GRAPHENE SYSTEMS
Kan, Erjun
Li, Zhenyu
Yang, Jinlong
NANO, 2008, 3 (06) : 433 - 442
[23] GRAPHENE'S MAGNETISM
不详
CHEMICAL & ENGINEERING NEWS, 2013, 91 (45) : 27 - 27
[24] Magnetism in graphene nanoislands
Fernandez-Rossier, J.
Palacios, J. J.
PHYSICAL REVIEW LETTERS, 2007, 99 (17)
[25] Graphene: Electrified magnetism
NPG Asia Materials, 2010, 2 (1) : 14 - 14
[26] Performance Characteristics of Scaled Bilayer Graphene Pseudospin Devices
Gilbert, M. J.
IEEE TRANSACTIONS ON ELECTRON DEVICES, 2010, 57 (11) : 3059 - 3067
[27] Charge-pseudospin coupled diffusion in semi-Dirac graphene: pseudospin assisted valley transport
Rostamzadeh, Saber
Sarisaman, Mustafa
NEW JOURNAL OF PHYSICS, 2022, 24 (08):
[28] Pseudospin for Raman D band in armchair graphene nanoribbons
Sasaki, Ken-ichi
Kato, Keiko
Tokura, Yasuhiro
Suzuki, Satoru
Sogawa, Tetsuomi
PHYSICAL REVIEW B, 2012, 85 (07):
[29] Pseudospin-orbital coupling for pseudospintronic device in graphene
Tan, Seng Ghee
Jalil, Mansoor Bin Abdul
Koh, Dax Enshan
Lee, Hwee Kuan
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2010, 322 (16) : 2390 - 2394
[30] Light absorption and pseudospin density generation in graphene nanoribbons
Inglot, M.
Dugaev, V. K.
Berakdar, J.
Barnas, J.
PHYSICAL REVIEW B, 2019, 100 (16)

← 1 2 3 4 5 →