# US 10,483,026 B2 · Metallic spin super lattice for logic and memory devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,026 B2 - Document ID: US10483026B2 - Status: Granted - Kind: B2 - Application number: 15/569,978 - Filed: 2015-06-24 - Published: 2018-06-07 - Granted: 2019-11-19 - Earliest claimed: 2015-06-24 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Sasikanth Manipatruni; Anurag Chaudhry; Dmitri E. Nikonov; Ian A. Young - Web page: https://patentgrep.com/patent/US10483026B2 ## CPC - H01F 10/3268: {the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn} - G11C 11/155: with cylindrical configuration - G11C 11/1675: {Writing or programming circuits or methods} - H03K 19/16: using saturable magnetic devices - H03K 19/18: using galvano-magnetic devices, e.g. Hall-effect devices - H10N 50/10: Magnetoresistive devices - H10N 50/85: Materials of the active region - H01F 10/265: {Magnetic multilayers non exchange-coupled (H01F10/32 takes precedence)} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - G11C: STATIC STORES (semiconductor memory devices H10B) - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) - H10N: ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR ## Abstract Described is an apparatus which comprises: an input ferromagnet to receive a first charge current and to produce a corresponding spin current; and a stack of metal layers configured to convert the corresponding spin current to a second charge current, wherein the stack of metal layers is coupled to the input magnet. ## Claims ### Claim 1 An apparatus comprising: a magnet to receive a first charge current and to produce a corresponding spin current; and a stack of structures, wherein the stack is to convert the corresponding spin current to a second charge current, wherein one structure of the stack of structures is adjacent to the magnet, and wherein the stack comprises a spin metallic super-lattice which includes a lattice of an alloy and a non-alloy metal. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the alloy has a surface corrugation. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the alloy comprises a heavy metal. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the non-alloy metal of the stack is coupled to the magnet. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the non-alloy metal includes one of: Ag, Cu, or Au. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the alloy includes one of: Bi and Ag; Bi and Cu; or Pb and Ag. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the corresponding spin current is converted to the second charge current as the corresponding spin current flows through the alloy and the non-alloy metal. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the alloy has a high density two dimensional (2D) electron gas with high Rashba spin orbit coupling, and wherein the 2D electron gas becomes a 2D spin gas when the second charge current flows though the 2D electron gas. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the spin metallic super-lattice is matched to the magnet. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the non-alloy metal of the spin metallic super-lattice is matched to the magnet, and wherein the non-alloy metal is followed by an interface of the alloy. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein the magnet comprises a Heusler alloy. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein a sign or direction of the second charge current is according to a direction of magnetization of the magnet. ### Claim 13 A system comprising: a memory; a processor coupled to the memory, the processor having an apparatus which includes: an input ferromagnet to receive a first charge current and to produce a corresponding spin current; and a stack of metal layers configured to convert the corresponding spin current to a second charge current, wherein the stack of metal layers is coupled to the input ferromagnet, wherein the stack of metal layers forms a spin metallic super-lattice with a surface alloy, and wherein the spin metallic super-lattice includes a lattice of the surface alloy and a non-alloy metal; and a wireless interface to allow the processor to communicate with another device. ### Claim 14 (depends on 1) The apparatus of claim 1, wherein the stack is operable for write operation by a forward Rashba effect, and wherein the stack is operable for read operation by an inverse Rashba-Edelstein effect. ### Claim 15 (depends on 1) The apparatus of claim 1 comprises an interconnect including metal, wherein the interconnect is adjacent to a sidewall of the stack to provide the output charge current to another device. ### Claim 16 An apparatus comprising: a magnet; and a stack of structures adjacent to the magnet, wherein the stack comprises a spin metallic super-lattice which includes a lattice of an alloy and a non-alloy metal, wherein: the non-alloy metal includes one of: Ag, Cu, or Au; and the alloy includes one of: Bi and Ag; Bi and Cu; or Pb and Ag. ### Claim 17 (depends on 16) The apparatus of claim 16, comprises an interconnect including metal, wherein the interconnect is adjacent to a sidewall of the stack to provide the output charge current to another device. ### Claim 18 (depends on 16) The apparatus of claim 16, wherein the alloy has a surface corrugation. ### Claim 19 (depends on 16) The apparatus of claim 16, wherein the alloy comprises a heavy metal.