SPIN ELECTRONIC MEMORY, INFORMATION RECORDING METHOD AND INFORMATION REPRODUCING METHOD
First Claim
1. A spin electronic memory comprising:
- a pair of electrodes;
a recording layer disposed between the electrodes, the recording layer being formed by laminating a first alloy layer and a second alloy layer, the first alloy layer being formed to contain any one of SbTe, Sb2Te3, BiTe, Bi2Te3, BiSe, and Bi2Se3 as a principal component and to have a thickness of 2 nm to 10 nm, the second alloy layer being formed to contain an alloy expressed by a following general formula (1) as a principal component; and
a spin injection layer formed with a magnetic material and configured to inject a spin into the recording layer with the magnetic material being magnetized,
M1-xTex
(1)where M represents an atom selected from atoms of Ge, Al, and Si, and x represents a value of 0.5 or more and less than 1.
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Accused Products
Abstract
A spin electronic memory of the present invention includes: a pair of electrodes 1, 2, recording layers 6a, 6b, and 6c between the electrodes 1 and 2, the recording layer being formed by laminating first alloy layer 5 and second alloy layer 4, the first alloy layer 5 being formed to contain any one of SbTe, Sb2Te3, BiTe, Bi2Te3, BiSe, and Bi2Se3 as a principal component and to have a thickness of 2 nm to 10 nm, the second alloy layer 4 being formed to contain an alloy expressed by general formula (1) as a principal component; and spin injection layer 7 formed with a magnetic material to inject a spin into the recording layer with the magnetic material being magnetized,
M1-xTex (1)
- where M represents an atom selected from atoms of Ge, Al, and Si, and x represents a value of 0.5 or more and less than 1.
7 Citations
10 Claims
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1. A spin electronic memory comprising:
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a pair of electrodes; a recording layer disposed between the electrodes, the recording layer being formed by laminating a first alloy layer and a second alloy layer, the first alloy layer being formed to contain any one of SbTe, Sb2Te3, BiTe, Bi2Te3, BiSe, and Bi2Se3 as a principal component and to have a thickness of 2 nm to 10 nm, the second alloy layer being formed to contain an alloy expressed by a following general formula (1) as a principal component; and a spin injection layer formed with a magnetic material and configured to inject a spin into the recording layer with the magnetic material being magnetized,
M1-xTex
(1)where M represents an atom selected from atoms of Ge, Al, and Si, and x represents a value of 0.5 or more and less than 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for recording information using a spin electronic memory, the method comprising
applying voltage having voltage values staged into n stages to n recording layers laminated, the voltage values being necessary for accumulating a spin in a saturated state in each of the recording layers, where n is an integer of at least 1 or more, wherein the spin electronic memory comprises: -
a pair of electrodes; a recording layer disposed between the electrodes, the recording layer being formed by laminating a first alloy layer and a second alloy layer, the first alloy layer being formed to contain an one of SbTe, Sb2Te3, BiTe, Bi2Te3, BiSe, and Bi2Se3 as a principal component and to have a thickness of 2 nm to 10 nm, the second alloy layer being formed to contain an alloy expressed by a following general formula (1) as a principal component; and a spin injection layer formed with a magnetic material and configured to inject a spin into the recording layer with the magnetic material being magnetized,
M1-xTex
(1)where M represents an atom selected from atoms of Ge, Al, and Si, and x represents a value of 0.5 or more and less than 1.
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10. A method for reproducing information using a spin electronic memory, the method comprising
measuring a status value of one of a resistance value and an optical reflectance of n recording layers laminated, and determining, based on the status value, number of the recording layers having information recorded thereon in the recording layers laminated, where n is an integer of at least 1 or more. wherein the spin electronic memory comprises: -
a pair of electrodes; a recording layer disposed between the electrodes, the recording layer being formed by laminating a first alloy layer and a second alloy layer, the first alloy layer being formed to contain an one of SbTe, Sb2Te3, BiTe, Bi2Te3, BiSe, and Bi2Se3 as a principal component and to have a thickness of 2 nm to 10 nm, the second alloy layer being formed to contain an alloy expressed by a following general formula (1) as a principal component; and a spin injection layer formed with a magnetic material and configured to inject a spin into the recording layer with the magnetic material being magnetized,
M1-xTex
(1)where M represents an atom selected from atoms of Ge, Al, and Si, and x represents a value of 0.5 or more and less than 1.
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Specification