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1. (WO2019027862) TOPOLOGICAL SPIN TEXTURES IN 3-DIMENSIONAL MAGNETIC STRUCTURES
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Pub. No.: WO/2019/027862 International Application No.: PCT/US2018/044286
Publication Date: 07.02.2019 International Filing Date: 30.07.2018
IPC:
G11C 11/16 (2006.01) ,G11C 11/02 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
11
Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
02
using magnetic elements
16
using elements in which the storage effect is based on magnetic spin effect
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
11
Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
02
using magnetic elements
Applicants:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA [US/US]; 1111 Franklin Street, 12th Floor Oakland, California 94607-5200, US
Inventors:
LIU, Kai; US
Agent:
O'BANION, John; US
Priority Data:
62/539,89801.08.2017US
Title (EN) TOPOLOGICAL SPIN TEXTURES IN 3-DIMENSIONAL MAGNETIC STRUCTURES
(FR) TEXTURES DE SPINS TOPOLOGIQUES DANS DES STRUCTURES MAGNÉTIQUES TRIDIMENSIONNELLES
Abstract:
(EN) Utilizing the topological character of patterns in 3D structures is beneficial for information storage, magnetic memory and logic systems. One embodiment describes the use of topological knots, exemplified by a Möbius strip, in which a spin traversing along the band for a complete cycle will recover its original position, while having rotated away from its original orientation. The spins can respond to an external magnetic field, but cannot achieve a ferromagnetic state, in which all magnetic moments are pointing in the same direction, due to the topological knot. 3D assemblies of such nano-Möbius strips may form a prototype secure magnetic information storage device that are secure and with extremely low levels of energy dissipation.
(FR) L'utilisation du caractère topologique de motifs dans des structures en 3D est avantageuse pour un stockage d'informations, une mémoire magnétique et des systèmes logiques. Un mode de réalisation concerne l'utilisation de nœuds topologiques, illustrés par un ruban de Möbius, dans lesquels un spin traversant le long de la bande pendant un cycle complet reprendra sa position d'origine même s'il a tourné loin de son orientation d'origine. Les spins peuvent réagir à un champ magnétique externe mais, en raison du nœud topologique, ils ne peuvent pas atteindre un état ferromagnétique dans lequel tous les moments magnétiques sont orientés dans la même direction. Des ensembles en 3D de ces nanorubans de Möbius peuvent constituer un prototype d'un dispositif de stockage d'informations magnétique et sécurisé présentant des niveaux de dissipation d'énergie extrêmement bas.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)