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Electronic device having controllable conductance

外国特許コード F110005047
整理番号 A041-33US
掲載日 2011年8月18日
出願国 アメリカ合衆国
出願番号 36347903
公報番号 20040089882
公報番号 6891186
出願日 平成13年8月30日(2001.8.30)
公報発行日 平成16年5月13日(2004.5.13)
公報発行日 平成17年5月10日(2005.5.10)
国際出願番号 PCTJP0107514
国際公開番号 WO2002021598
国際出願日 平成13年8月30日(2001.8.30)
国際公開日 平成14年3月14日(2002.3.14)
優先権データ
  • 特願2000-265344 (2000.9.1) JP
  • 2001JP007514 (2001.8.30) WO
発明の名称 (英語) Electronic device having controllable conductance
発明の概要(英語) This invention provides a method for constructing bridge including fine wires or point contacts producing a quanitized inter-electrode conductance, and provides a method for easily controlling the conductance of this bridge.
Further, it aims to provide an electronic element using conductance control due to the bridge, fine wire or point contact formed between the electrodes.
These objects are accomplied with an electronic element comprising a first electrode comprising a mixed electroconducting material having ion conductance and electron conductance, and a second electrode comprising an electroconducting substance, wherein the inter-electric conductance can be controlled.
In another aspect, this invention is an electronic element formed by a bridge between electrodes, by applying a voltage between the electrodes so that the second electrode is negative with respect to the first electrode and movable ions migrate from the first electrode to the second electrode.
In a third aspect, this invention is a method of controlling inter-electrode conductance comprising at least one of applying a voltage between the electrodes of the above electronic element so that the second electrode is negative with respect to the first electrode so that a bridge is formed between the electrodes due to the migration of movable ions from the first electrode to the second electrode, and reversing the inter-electrode polarity so that the bridge is thinned or disconnected.
特許請求の範囲(英語) [claim1]
1. An electronic element comprising a first electrode comprising a mixed electroconducting material having ion conductance and electron conductance, and a second electrode comprising an electroconducting substance, in which the conductance between the electrodes can be controlled.
[claim2]
2. The electronic element according to claim 1, wherein the distance between said electrodes is 100 nanometers or less.
[claim3]
3. The electronic element according to claim 2, wherein said mixed electroconducting material is Ag2S, Ag2Se, Cu2S or Cu2Se.
[claim4]
4. The electronic element according to claim 2, wherein the power consumption is 10-5 W or less.
[claim5]
5. The electronic element according to claim 2, which operates at a voltage of 0.5V or less, and a current of 50 microamperes or less.
[claim6]
6. The electronic element according to claim 2, wherein a bridge is formed between said electrodes, by applying a voltage between said electrodes so that the second electrode is negative with respect to the first electrode so that movable ions migrate from the first electrode to the second electrode.
[claim7]
7. The electronic element according to claim 2, wherein the conductance between said electrodes is quantized.
[claim8]
8. The electronic element according to claim 7, wherein the conductance (G) is given by: (Equation image 2 not included in text) (where, e is the elementary charge, h is Planck's constant and Ti is the transmission probability of the ith channel contributing to conduction).
[claim9]
9. A method of controlling inter-electrode conductance comprising at least one of the steps of;
a. applying a voltage between the electrodes of an electronic element having a first electrode comprising a mixed electroconducting material having ion conductance and electron conductance, and a second electrode comprising an electroconducting substance, in which the conductance between the electrodes can be controlled, said voltage being applied so that the second electrode is negative with respect to the first electrode so that a bridge is formed between the electrodes due to the migration of movable ions from the first electrode to the second electrode, and b. reversing the inter-electrode polarity so that the bridge is thinned or disconnected.
[claim10]
10. The method according to claim 9, wherein the conductance between said electrodes is quantized.
[claim11]
11. The method according to claim 10, wherein the conductance is given by: (Equation image 3 not included in text) (where, e is the elementary charge, h is Planck's constant and Ti is the transmission probability of the ith channel contributing to conduction).
[claim12]
12. The method according to claim 9, wherein the conductance is controlled by applying a pulse voltage between the electrodes.
[claim13]
13. The method according to claim 11, wherein the conductance is controlled by applying a pulse voltage between the electrodes.
[claim14]
14. The electronic element according to claim 3, wherein the power consumption is 10-5 W or less.
[claim15]
15. The electronic element according to claim 3, which operates at a voltage of 0.5V or less, and a current of 50 microamperes or less.
[claim16]
16. The electronic element according to claim 3, wherein a bridge is formed between said electrodes, by applying a voltage between said electrodes so that the second electrode is negative with respect to the first electrode so that movable ions migrate from the first electrode to the second electrode.
[claim17]
17. The electronic element according to claim 3, wherein the conductance between said electrodes is quantized.
[claim18]
18. The electronic element according to claim 14, which operates at a voltage of 0.5V or less, and a current of 50 microamperes or less.
[claim19]
19. The electronic element according to claim 18, wherein a bridge is formed between said electrodes, by applying a voltage between said electrodes so that the second electrode is negative with respect to the first electrode so that movable ions migrate from the first electrode to the second electrode.
[claim20]
20. The electronic element according to claim 19, wherein the conductance between said electrodes is quantized.
  • 発明者/出願人(英語)
  • AONO MASAKAZU
  • TERABE KAZUYA
  • HASEGAWA TSUYOSHI
  • NAKAYAMA TOMONOBU
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • 257/14
  • 257/E45.002
  • 257/E49.003
  • 438/101
参考情報 (研究プロジェクト等) CREST Quantum Effects and Related Physical Phenomena AREA
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