# Role of quantum fluctuations in a spin glass

## Abstract

The mean-field theory of a quantum Heisenberg spin glass is performed using the variational approach and the replica method. For spin /sup 1///sub 2/, there is no spin glass phase. For 1 equal to or less than s less than infinity, a spin glass phase may exist for T/sub 1/ less than T equal to or less than T/sub f/, where T/sub f/ is the freezing temperature, and at T/sub 1/ the system exhibits a first-order transition back to the paramagnetic state.

- Authors:

- Publication Date:

- Research Org.:
- Ames Lab., Ames, IA (United States)

- OSTI Identifier:
- 6644574

- Report Number(s):
- IS-M-135; CONF-780824-6

TRN: 78-019440

- DOE Contract Number:
- W-7405-ENG-82

- Resource Type:
- Conference

- Resource Relation:
- Conference: 15. conference on low temperature physics, Grenoble, France, 23 Aug 1978

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; SPIN GLASS STATE; QUANTUM FIELD THEORY; CRYSTAL-PHASE TRANSFORMATIONS; MATHEMATICAL MODELS; VARIATIONAL METHODS; FIELD THEORIES; PHASE TRANSFORMATIONS; 656000* - Condensed Matter Physics

### Citation Formats

```
Klemm, R A.
```*Role of quantum fluctuations in a spin glass*. United States: N. p., 1978.
Web.

```
Klemm, R A.
```*Role of quantum fluctuations in a spin glass*. United States.

```
Klemm, R A. 1978.
"Role of quantum fluctuations in a spin glass". United States. https://www.osti.gov/servlets/purl/6644574.
```

```
@article{osti_6644574,
```

title = {Role of quantum fluctuations in a spin glass},

author = {Klemm, R A},

abstractNote = {The mean-field theory of a quantum Heisenberg spin glass is performed using the variational approach and the replica method. For spin /sup 1///sub 2/, there is no spin glass phase. For 1 equal to or less than s less than infinity, a spin glass phase may exist for T/sub 1/ less than T equal to or less than T/sub f/, where T/sub f/ is the freezing temperature, and at T/sub 1/ the system exhibits a first-order transition back to the paramagnetic state.},

doi = {},

url = {https://www.osti.gov/biblio/6644574},
journal = {},

number = ,

volume = ,

place = {United States},

year = {1978},

month = {1}

}

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